What's new in MLT 7.24.0
Apr 29, 2024
- Framework:
- Fixed a small memory leak in mlt_repository.
- Fixed a small memory leak in MltPushConsumer C++ class.
- Block connecting a null producer to a service.
- Include locale.h on any GNU libc platform.
- Modules:
- Added a new spatialaudio module with filters:
- ambisonic-decoder
- ambisonic-encoder
- Fixed building with FFmpeg 7.
- Fixed text keywords do not work with non-ASCII filenames on Windows:
- pixbuf producer
- opencv_tracker filter
- dynamictext filter
- qimage producer
- Added "meta.media.aspect_ratio" property to the avformat producer.
- Fixed distort property not working in movit.rect filter.
- Fixed frames dropping or repeating in the multi consumer.
- Fixed the dynamic_loudness filter maximizing audio gain.
- Fixed distortion in the mono filter.
- Also check for WAYLAND_DISPLAY to detect a graphical session in the qt
- and glaxnimate modules.
- Fixed the wave filter distorts if wave = 1 with preview scaling.
- Added the read-only meta.media.%u.codec.layout property to avformat producer.
- Set the channel_layout property on the frame for the noise and tone
- audio producers.
- Fixed outline maximum for the text and dynamictext filters.
- Other:
- Fixed crash when using -chain from melt.
- Fixed a small memory leak on Windows fopen().
New in MLT 7.22.0 (Nov 29, 2023)
- Framework:
- Added new functions:
- mlt_property_is_color()
- mlt_property_is_numeric()
- mlt_property_is_rect()
- Many new keyframe types:
- mlt_keyframe_smooth_loose - ~= (same as old mlt_keyframe_smooth - Unity Catmull-Rom spline)
- mlt_keyframe_smooth_natural - $= (Centripetal Catmull-Rom spline with natural slope)
- mlt_keyframe_smooth_tight - -= (Centripetal Catmull-Rom spline with 0 slope)
- mlt_keyframe_sinusoidal_in - a=
- mlt_keyframe_sinusoidal_out - b=
- mlt_keyframe_sinusoidal_in_out - c=
- mlt_keyframe_quadratic_in - d=
- mlt_keyframe_quadratic_out - e=
- mlt_keyframe_quadratic_in_out - f=
- mlt_keyframe_cubic_in - g=
- mlt_keyframe_cubic_out - h=
- mlt_keyframe_cubic_in_out - i=
- mlt_keyframe_quartic_in - j=
- mlt_keyframe_quartic_out - k=
- mlt_keyframe_quartic_in_out - l=
- mlt_keyframe_quintic_in - m=
- mlt_keyframe_quintic_out - n=
- mlt_keyframe_quintic_in_out - o=
- mlt_keyframe_exponential_in - p=
- mlt_keyframe_exponential_out - q=
- mlt_keyframe_exponential_in_out - r=
- mlt_keyframe_circular_in - s=
- mlt_keyframe_circular_out - t=
- mlt_keyframe_circular_in_out - u=
- mlt_keyframe_back_in - v=
- mlt_keyframe_back_out - w=
- mlt_keyframe_back_in_out - x=
- mlt_keyframe_elastic_in - y=
- mlt_keyframe_elastic_out - z=
- mlt_keyframe_elastic_in_out - A=
- mlt_keyframe_bounce_in - B=
- mlt_keyframe_bounce_out - C=
- mlt_keyframe_bounce_in_out - D=
- Fixed missing support for mlt_service_transition in Mlt::Producer() C++ constructor.
- Modules:
- Fixed rotoscoping filter crash on image with height = 0.
- Fixed crashed due to qtblend transition requesting an image of 0 width or height.
- Added support for RtAudio 6 in the rtaudio consumer.
- Fixed createdate keyword deletes preceeding text in dynamictext filter.
- Added opacity property to filters that use qtext:
- dynamictext
- gpstext
- qtext
- timer
- Added fade_video, fade_audio, and fade_color properties to autofade filter.
- Added backwards compatibility for changed filter names in frei0r v2.3.1:
- frei0r.measure_pr0be
- frei0r.measure_pr0file
- frei0r.tehroxx0r
- frei0r.alpha0ps_alpha0ps
- frei0r.alpha0ps_alphagrad
- frei0r.alpha0ps_alphaspot
- frei0r.denoise_hqdn3d
- Fixed a memory leak in avformat producer with consumer deinterlacer=yadif.
- Fixed qimage producer color if consumer color_range=pc pix_fmt=yuv444p.
- Other:
- Fixed ten_bit/ProRes 422 avformat preset produced ProRes 444.
- Fixed YouTube avformat preset did not output high profile with some hardware encoders.
New in MLT 7.20.0 (Oct 2, 2023)
- Framework:
- Fixed “blank” in a playlist does not have audio normalization filters.
- Fixed serializing mlt_color transparent black as “#00000000” when the property was set using an integer or mlt_color.
- Fixed mlt_chain_set_source() would always fetch a frame from the producer even if it has “meta.media.frame_rate_num” and “meta.media.frame_rate_den” properties making things slow.
- Fixed Mlt::Chain leaking memory.
- Modules:
- Added a blank producer to the core module.
- Fixed installing filter_audioseam.yml.
- Added an avlink link to the avformat module for FFmpeg filters that can benefit from future frames such as adeclick.
- Added the preserve_alpha property to the box_blur filter.
- Fixed loading service metadata for the qt6 and glaxnimate-qt6 modules.
- Fixed a crash when changing the rotate property in avformat producer with interlace video.
- Add astream and vstream properties to avformat producer. Unlike audio_index and video_index are absolute indices across the entire array of streams regardless their type, these new 0-based properties are relative to the type audio or video. For example, astream=1 is the second audio stream.
- Fixed a possible crash in the avformat producer’s mlt_producer_probe virtual function.
- Updated the glaxnimate module to version 0.5.4.
- Fixed the sdl2 consumer crashing with the Linux radeonsi_dri driver and showing only all black with the Linux nvidia driver.
- Added keywords to gpstext filter:
- #gps_cadence#
- #gps_grade_degrees#
- #gps_grade_percentage#
- #gps_temperature#
- Added some color_styles to the gpsgraphic filter:
- 10 = color by speed (max 100 km/h)
- 11 = color by grade (max 90 degrees)
- 12 = color by grade (max 20 degrees)
- Added more unit formats to legend_unit property of gpsgraphic filter:
- mmin or m/min
- ftmin or ft/min
- Added keywords to dynamictext filter:
- #basename#
- #filename#
- Other:
- Fix compiling on Android (not supported by the core developers).
- Changed the avformat consumer FLAC preset to use the flac format.
- Fixed the melt Shift+H and Shift+L keyboard shortcuts when the SDL2 window has focus.
New in MLT 7.18.0 (Jul 28, 2023)
- Framework:
- Added mlt_audio_free_data().
- Added meta.playlist.clip_position and meta.playlist.clip_length properties to mlt_playlist.
- Fixed mlt_frame_get_audio fails on mlt_audio_none.
- Modules:
- Added two audio filters to core module to be used on a playlist/track:
- audioseam
- autofade
- Fixed a crash in vidstab filter on image format change.
- Fixed font weight in qtext filter on Qt 6.
- Fixed yuv420p not working in rescale filter.
- Fixed text shadow outline in kdenlivetitle producer.
- Fixed crash when changing the profile with count producer.
- Fixed constructor corruption in frei0r module.
- Fixed deinterlace link was added to invalid producer in xml producer.
- Fixed producers not indicating progressive scan video:
- kdenlivetitle
- pango
- qimage
- qtext
- Fixed video scan mode detection in avformat producers that only indicate on their container format and not on frames such as Ut Video in Matroska.
- Fixed very large images in qimage producer on Qt 6.
- Fixed seeking on clips that use speed_map in timeremap link.
- Fixed a color level problem with sRGB inputs in the movit module.
- Fixed avformat producer’s deallocation function for AVCodecContext.
- Fixed field order of qtblend and frei0r.cairoblend transitions.
- Changed the avformat producer seek_threshold default to 64.
- Updated ebur128 filter to version 1.2.6.
New in MLT 7.16.0 (May 7, 2023)
- Framework:
- Added a chain_normalizers.ini to the data directory.
- Added New C functions to support deinterlacer links:
- mlt_deinterlacer_name()
- mlt_deinterlacer_id()
- mlt_link_filter_init()
- mlt_link_filter_metadata()
- mlt_cache_put_frame_audio()
- mlt_cache_put_frame_image()
- mlt_frame_clone_audio()
- mlt_frame_clone_image()
- Added support for loading a filter as a link via mlt_link_filter_init().
- Added enum mlt_deinterlacer with:
- mlt_deinterlacer_none
- mlt_deinterlacer_onefield
- mlt_deinterlacer_linearblend
- mlt_deinterlacer_weave
- mlt_deinterlacer_bob
- mlt_deinterlacer_greedy
- mlt_deinterlacer_yadif_nospatial
- mlt_deinterlacer_yadif
- mlt_deinterlacer_bwdif
- mlt_deinterlacer_estdif
- mlt_deinterlacer_invalid
- Added new 10-bit YUV members to enum mlt_image_format:
- mlt_image_yuv420p10
- mlt_image_yuv444p10
- Fixed a deadlock and improved quality of start of playback when mlt_consumer property prefill is greater than 1.
- Fixed a couple of data races in mlt_events and mlt_consumer.
- Fixed a crash in mlt_frame_clone() with movit and the mask_start filter.
- Modules:
- Fixed regressions in version 7.14.0:
- memory and thread count usage in swresample and resample links
- automatic profile support in melt
- crash in count producer
- Upgraded the glaxnimate git submodule to version 0.5.3.
- Added avformat/avdeinterlace (default) and xine/deinterlace links.
- Fixed deinterlacing in the multi and qglsl consumers.
- Added 10-bit video support to movit.convert filter.
- Several things in the avformat producer:
- Fixed artifacts decoding raw FLAC audio.
- Fixed a potential crash on mlt_producer_probe().
- Fixed seeking on music with album art.
- Fixed possible infinite loop on end-of-file.
- Fixed a potential deadlock.
- Fixed chroma bleeding on interlaced yuv420p.
- Fixed color_range or force_full_range sometimes not working.
- Fixed autorotate property not working with a chain.
- Added audio caching.
- Deprecated the mute_on_pause property.
- Fixed FFmpeg version 6 compilation error.
- Fixed rendering the text outline in kdenlivetitle producer.
- Fixed 'movit.rect property animation.
- Fixed corrupt video in crop filter when mlt_image_yuv420p requested.
- Fixed possible null pointer crashes in some audio filters:
- audiolevel
- volume
- loudness
- Fixed a possible roi assert crash in opencv.tracker filter.
- Added support for "Nano" algo to the opencv.tracker filter.
- Added the property fix_background_alpha to the luma transition.
- Other:
- Added -query links to melt command line.
- Added avformat consumer presets for 10-bit video:
- AV1
- DNxHR-HQ
- FFV1
- ProRes 422
- ProRes 444
- ProRes HQ
- x264-high10
- x265-main10
- Added a clang-format target to CMake and reformatted all code.
- Added warnings as errors with some exceptions to CMake with Debug build type and gcc.
- Fixed numerous warnings throughout the code.
New in MLT 7.14.0 (Mar 6, 2023)
- Framework:
- Added functions to get detailed info about a producer more directly (without having to get a frame and get its image in the case of avformat producer, for example):
- Mlt_producer_probe()
- Mlt::Producer::probe()
- Added functions to add normalizer links to chains (based on a chain_loader.ini configuration data file:
- Mlt_chain_attach_normalizers()Mlt::Chain::attach_normalizers()
- Changed locale_t to mlt_locale_t to avoid redefinition on some systems (e.g. clang/llvm on win32).
- Fixed the value provided with event “consumer-thread-join” to be mlt_event_data_thread as documented.
- Fixed mlt_image_format_planes() for mlt_image_yuv420p.
- Modules:
- Added a swresample link to the avformat module.
- Added a resample link to the resample module.
- Fixed compatibility of avformat module with FFmpeg version 6.
- Fixed rotoscoping filter when request image size different than profile.
- Fixed timeremap link breaking crop filter.
- Fixed audio/video sync in avformat producer when the video start time is not 0.
- Improved seeking on a WMA audio file in avformat producer.
- Optimization to set AVDISCARD_ALL on disinterested streams in avformat producer.
- Added separate demuxing thread in avformat producer.
- Added filtergraph property to the avformat producer.
- Fixed filter movit.convert’s CPU image converter in mlt_tractor and mlt_frame_clone().
- Fixed using movit module with mlt_chain.
- Fixed 10-bit full range YUV color input with Movit.
- Fixed aspect ratio issues in qtblend filter transform.
- Fixed the movit.luma transition.
- Changed the qglsl consumer to use an OpenGL core profile version 3.2 context to make it compatible with recent Movit versions.
- Upgraded glaxnimate git submodule to version 0.5.2.
- Fixed xml producer incorrectly adds a path prefix to a consumer producer.
- Fixed using opencv.tracker filter with mlt_chain.
- Added interlace-aware chroma conversion from mlt_image_yuv422 to yuv420p in the avformat consumer.
- Added the speed_map property to the timeremap link.
- Fixed the loader producer not injecting the consumer producer when a xml producer changes the frame rate.
- Fixed ‘loader’ producer corrupts the profile colorspace and description when it injects a consumer producer.
- Added a loader-nogl producer to the core module based on loader but prevents adding movit-based filters.
- Changed count producer to take an optional string argument with the name of a loader producer.
- Fixed yadif deinterlace not working in a mlt_chain.
- Fixed the bob, weave, greedy, onefield deinterlace filter methods on x86-64 architecture.
- Other:
- Fixed SWIG python shadow functions for mlt7.
- Added CMake build option MOD_GLAXNIMATE_QT6.
New in MLT 7.12.0 (Nov 19, 2022)
- This version is released soon after 7.10.0 to fix a couple of major new bugs in the popular qtblend and frei0r.cairoblend transitions. It also includes new color animation APIs with sensible interpolation!
New in MLT 7.10.0 (Nov 1, 2022)
- The highlight of this version is support for Qt 6.
- Framework:
- Fixed some unguarded null pointers.
- Added MLT_REPOSITORY_DENY environment variable to skip loading a module (colon delimited list of file names without extension, for example “libmltqt”).
- Fixed frame corruption with one frame transition.
- Changed so-called test-card frame with audio to show a checkerboard:
- Added mlt_image_fill_checkerboard()
- Added mlt_image_fill_white()
- Preserve the producer creation_time property when creating a chain.
- Added mlt_image_rgba_opaque().
- Fixed getting a property as a timecode or clock value with 24 or 23.98 fps in mlt_property.c.
- Modules:
- Added support for Qt 6:
- Added MOD_QT6 and BUILD_TESTS_WITH_QT6 CMake options.
- Allow installing building and installing both Qt 5 & 6 modules.
- Avoid loading both Qt 5 & 6 modules by preferring Qt 5 (use MLT_REPOSITORY_DENY=libmltqt to block Qt 5 and use Qt 6).
- This is limited to the qt module for now and not glaxnimate (still a work-in-progress).
- Added support for WebP animation to qimage producer.
- Added gps_graphic filter to the qt module.
- Added the format property in each producer’s get_frame method to indicate the producer’s default/preferred mlt_image_format to facilitate an optimization in the qtblend transition when the B frame is opaque and has the same aspect ratio.
- Added property animation to all audio visualization filters in the qt module.
- Improved TGA format detection in qimage filter.
- Fixed qtblend transition has incorrect scaling with consumer scaling.
- Fixed an case of incorrect alpha scaling in qtblend transition.
- Fixed luma transition not updated when resource property changes.
- Added the alpha_operation property to the shape filter.
- Updated the glaxnimate git submodule to version 0.5.1.
- Fixed lines filter in oldfilm regression in v7.6.0.
- Added dbpeak property to the audiolevel filter in dB.
- Fixed memory leak using some frei0r plugins in conjunction with an affine that animates the rect property.
- Other:
- Fixed building for musl.
- Fixed underlinking iconv in gdk module on MinGW.
- Fixed SWIG CMake options can overwrite each other.
- Fixed SWIG 4 no longer generates a mlt.php.
New in MLT 7.8.0 (Jun 23, 2022)
- This highlight of this version is a new glaxnimate producer to render 2D vector art and animation.
- Framework:
- Added mlt_frame_get_alpha_size() and refactored code to use it.
- Fixed a possible null pointer crash in mlt_service_apply_filters().
- Modules:
- Added a glaxnimate producer to the glaxnimate module.
- Added new file extensions for glaxnimate producer: json, lottie, rawr, tgs.
- Removed Qt4 compatibility from the qt module.
- Added Qt6 compatibility to the qt module.
- Added new file extensions for qimage producer: avif, heic, heif, jxl.
- Fixed color_range when using the multi consumer.
- Fixed reloading updated results in the loudness filter.
- Fixed image_mode=blend in the timeremap link.
- Fixed crash regression in swscale filter with odd size YUV image.
- Fixed the choppy filter may result in black frames with transitions.
- Prevent a crash in avfilter producer for a bug in glibc with _FORTIFY_SOURCE=3.
New in MLT 7.6.0 (Mar 30, 2022)
- Framework:
- Added Mlt::Animation::next_key() and previous_key() with error checking.
- Fixed the moduledir and mltdatadir variables in the pkg-config file.
- Removed calling setlocale() in mlt_factory_init() (moved to melt option -setlocale).
- Added mlt_properties_copy() and Mlt::Properties::copy().
- Changed some primarily internal property names to consolidate on “consumer.” as a prefix convention for all consumer properties copied to mlt_frames.
- Added consumer property deinterlacer to replace deprecated deinterlace_method.
- Fixed full range color from producer to consumer.
- Added mlt_slices_size_slice() helper function.
- Fixed choppy playback due to large values in frame_rate_num or frame_rate_den in mlt_consumer.
- Added performance optimization for a single slice in mlt_slices.
- Modules:
- Added audiolevelgraph video filter to the qt module.
- Added property segment_gap to the audiospectrum video filter.
- Added segments property to the audiolevelgraph and audiospectrum filters.
- Fixed loading image sequence with extended UTF-8 characters in the name of a folder for the qimage producer.
- Fixed a crash in avformat producer if the rotate property is set after the first frame is fetched.
- Added the invert_mask property to the shape video filter.
- Changed avformat producer to normalize frame rates very close to non-integer broadcast frames 24/1.001, 30/1.001, and 60/1.001.
- Converted the chroma and chroma_hold filters’ key property to a proper color type.
- Added slice threading to:
- avformat producer (with FFmpeg v5)
- swsscale (with FFmpeg v5)
- lift_gamma_gain
- shape
- charcoal
- vignette
- wave
- threshold
- tcolor
- sepia
- mirror
- invert
- grain
- lines
- spot_remover
- Improved the speed of the oldfilm filter.
- Added a faster box_blur filter to the core module and deprecated the boxblur filter in the kdenlive module.
- Fixed preview scaling for the avfilter.gblur filter.
- Fixed incorrect text overlap in kdenlivetitle producer.
- Improved audio synchronization in avformat when playing in reverse.
- Added much more service metadata (documentation).
- Fixed full range 10-bit video input in avformat producer.
- Fixed full range color handling in:
- avformat producer
- avcolor_space
- brightness
- resize
- luma transition
- movit.convert
- charcoal
- invert
- shape
- Fixed identifying unsupported colorspaces in avformat producer.
- Fixed preserving the alpha channel in the avfilter.fspp filter.
- Other:
- Some CMake fixes.
- Added dumb-init to the docker (no need to remember docker run --init).
New in MLT 7.4.0 (Dec 20, 2021)
- Framework:
- Added more constructors and assignment operators in C++ wrapper:
- Mlt::Filter::Filter(Mlt::Filter*)
- Mlt::Link::Link(Mlt::Link*)
- Mlt::Link::Link(Mlt::Service&)
- Mlt::Link::Link(Mlt::Link&)
- Mlt::Link::Link(Mlt::Link const&)
- Mlt::Link::operator=(Mlt::Link const&)
- Mlt::Service::Service(Mlt::Service*)
- Fixed serialized animation in mlt_animation_serialize_cut_tf() and mlt_animation_serialize_cut() to include a trailing keyframe value.
- Modules:
- Added property animation for avfilter filters.
- This only works for numeric parameters, but many libavfilter options that have a type string are actually numeric in nature but accept a string expression.
- Added rotate property to avformat producer to override orientation.
- Changed jackrack module to silence false LADSPA plugin loading errors.
- Fixed a crash in the oldfilm filter when using preview scaling.
- Fixed timeremap link distorts audio when speed is zero.
- Added nautical mile and knot units of measure to the gpstext filter.
- Fixed full range color handling with embedded tractor (e.g. same track transition).
- Fixed device capture in avformat producer regression in version 7.2.0.
- Fixed a crash in the matte transition.
New in MLT 7.2.0 (Nov 1, 2021)
- Framework:
- Added support for mlt_properties as a child of mlt_properties including XML (de)serialization:
- mlt_property_set_properties()
- mlt_property_get_properties()
- mlt_properties_set_properties()
- mlt_properties_get_properties()
- mlt_properties_get_properties_at)(
- Mlt::Properties::set()
- Mlt::Properties::get_props()
- Mlt::Properties::get_props_at() Applications can use this to store structured data in its own namespace, for example “shotcut:markers”. And modules could use this for hierarchical parameters.
- Fixed crash in mlt_transition upon inserting or removing a track.
- Stopped loading mlt_profile until needed in mlt_chain creation.
- Modules:
- Added filter gpstext that is similar to dynamictext based on data in a GPX file.
- Added speed parameter to timer filter.
- Added WebP presets for avformat consumer.
- Added a pixelate option to the opencv_tracker filter’s blur property.
- Fixed center_bias of crop filter not working with use_profile.
- Fixed some missing RGB mlt_image_format renames after change in v7.0.0. This primarily affected presets and service metadata.
- Fixed a crash when changing preview scaling in timeremap link.
- Fixes problems due to adding redundant normalize filters upon loading a producer from XML.
- Ensure filters added by the loader producer always come first in list.
- Fixed a crash using shape and affine filters together on color producer.
- Fixed a crash when a vidstab file fails to open.
- Changed vidstab filter to save its file in ASCII text mode.
- Fixed a clang LTO error in the decklink module.
- Fixed a video decoding regression on some videos in the avformat producer.
- Fixed a crash in the audiowaveform filter.
- Fixed loading a relative filename from XML for mask_start with shape.
- Fixed “#filedate#” in dynamictext filter when used with timeremap link.
- Fixed timer filter’s new speed property interaction with start delay.
- Fixed a crash with YUYV422 (YUY2) input in avformat producer.
- Fixed data race condition in timeremap link.
- Fixed compiling avformat module with FFmpeg git beyond v4.4 with many deprecations removed.
- Fixed alpha channel size calculation in brightness filter.
- Restore legacy tracker and the new DaSiam tracker for OpenCV >= 4.5.3 in the opencv_tracker filter.
- Fixed a crash in opencv_tracker on shape_width = 0.
- Fixed incorrect handling of in and out points and duration in the opencv_tracker filter.
- Fixed the composite transition leaking left border of an image on the right side on uneven width.
- Fixed a problem handling some UTF-8 in thhe typerwriter filter.
- Other:
- Added support for the RELOCATABLE CMake option for Linux or BSD build.
New in MLT 7.0.1 (May 16, 2021)
- This version is just build fixes for the most immediate problems with the somewhat new but exclusive build system in v7:
- Fixed docker image not working
- Fixed a system-installed build cannot finds its modules and data
- Fixed the python installation path for binaries
- Added support for the DESTDIR environment variable when creating melt symlink
- Increased the build constant for the maximum size of a line of a properties file
- Fixed the vidstab metadata install path
New in MLT 7.0.0 (May 4, 2021)
- Framework:
- Fixed a rounding error calculating display aspect ratio in mlt_profile_from_producer().
- Added mlt_chain and Mlt::Chain classes.
- Added mlt_link and Mlt::Link classes.
- Added a link value to service type in the service metadata schema.
- Added a boolean animation parameter attribute to the service metadata schema.
- Added mlt_animation_shift_frame() and Mlt::Animation::shift_frames().
- Added mlt_animation_get_string().
- Fixed using a stale cached property animation string.
- Added mlt_image and Mlt::Image classes.
- Remove legacy "height + 1" workaround in image allocation.
- Fixed a crash on setting timewarp speed higher than 23x.
- Added mlt_audio_silence().
- Removed mlt_image_opengl.
- Replaced variadic arguments in mlt_events with new mlt_event_data APIs.
- Removed mlt_geometry APIs.
- Renamed mlt_image_rgb24a as mlt_image_rgba.
- Renamed mlt_image_rgb24 to mlt_image_rgb.
- Renamed mlt_image_glsl to mlt_image_movit.
- Renamed mlt_image_glsl_texture to mlt_image_opengl_texture.
- Removed virtual function mlt_frame::get_alpha_mask().
- Removed mlt_frame_get_alpha_mask().
- Removed deprecated functions:
- mlt_sample_calculator
- mlt_sample_calculator_to_now
- mlt_channel_layout_name
- mlt_channel_layout_id
- mlt_channel_layout_channels
- mlt_channel_layout_default
- mlt_slices_init
- mlt_slices_close
- mlt_slices_run
- mlt_playlist_move_region
- Mlt::Playlist::move_region
- Modules:
- Added a timeremap link to the core module with animatable map property. (Speed can increase or decrease between keyframes including reverse.)
- Added chain and link XML elements to xml module.
- Added “meta.media.has_b_frames” property to avformat producer.
- Removed deprecated font property from pango producer.
- Improved album art (attached pic) detection in avformat producer.
- Improved the resample filter to have less artifacts and use less memory.
- Removed deprecated modules:
- gtk2 (not gdk)
- kino
- linsys
- lumas
- motion_est
- swfdec
- videostab
- Removed the following services:
- data_feed filter
- data_show filter
- region filter and transition
- sdl_image
- Converted filters to use new mlt_image class:
- brightness
- imageconver
- mirror
- spot_remover
- Deprecated the audiowave filter.
- Added the ability to build the jackrack module without JACK to get only LADSPA producers and filters.
- Deprecated start and end properties for the following filters:
- brightness
- panner
- boxblur
- wave
- volume
- Other:
- CMake: nearly complete rewrite.
- Removed the old configure bash scripts and Makefiles.
- Added -chain and -link options to melt command line.
New in MLT 6.26.1 (Apr 14, 2021)
- Modules:
- Added support for hwaccel query string parameter to the avformat producer. It accepts the following values:
- vaapi (Linux/BSD), cuda (Linux), videotoolbox (macOS), d3d11va (Windows), dxva2 (Windows)
- The query string delimiter is a backslash followed by a question mark: ?. The backslash prevents interpreting the question mark from being a part of the file name. You must preface the file name with either avformat: or file: to make it work with melt (but not XML or via API because melt interprets name=value as a MLT property if there is no colon before equals).
- Added support for hwaccel_device query string parameter to the avformat producer. This is only used with vaapi (device path) and cuda, d3d11va, or dxva (number).
- Improved the usage of image slice threading in frei0r. This only applies when threads=0 and only works with some frei0r plugins that you must decide yourself.
- Added an ellipse item to kdenlivetitle producer.
- Added support for PNG and GIF as album art in the avformat producer.
- Added BT.2020 color space metadata to the avformat producer.
- Resolved many FFmpeg deprecations in the avformat producer making it possible to support AV1 decoding.
- Added a strobe fitler that periodically makes the alpha channel transparent.
- Added a new typewriter text filter (currently only works with the kdenlivetitle producer).
- Improved sound quality for lower pitch shifts in rbpitch.
- Fixed speed of trick play in the jack, rtaudio, sdl_audio, and sdl2_audio consumers.
- Fixed matrix for independent channels in swresample filter.
- Fixed leading zeros for the timer filter.
- Fixed flickering using affine with a luma transition.
- Fixed a crash using RGBA images in the qimage producer (regression in v6.22.0).
- Fixed brightness filter misbehaves on alpha > 1.
- Fixed writing flac format file does not set its duration in the avformat consumer.
- Fixed an infinite loop in rbpitch filter.
- Fixed ttl in the qimage producer.
- Fixed building with OpenCV 4.5
- Fixed artifacts with multiple HTML qtext filters and frame threading.
- Deprecated the start and end properties on the following (use property animation instead):
- brightness
- panner
- boxblur
- wave
- volume
- Deprecated the following services:
- data_show
- region
- transition filter
- autotrack_rectangle
- motion_est
- slowmotion
- Other:
- CMake:
- Fixed building without SWIG.
- Added many “MOD_…” options to explictly disable modules.
- Added src/tests and the option BUILD_TESTING, which defaults off.
- All dependency checks moved to top level CMakeLists.txt.
- Install melt man page.
- Install oldfilm SVG files.
- Added src/examples.
- Install framework/metaschema.yaml.
- Fixed plusgpl datadir.
- Added all swwig/ languages.
- Increased C++ standard to C++14.
- Added an AV1 encoding preset.
- Improved documentation of the requirement for C11.
- The minimum version of FFmpeg is v4.0 and Libav is no longer supported.
New in MLT 6.26.0 (Apr 12, 2021)
- This is the last planned release of major version 6. Version 7 will be released soon and introduce some minor API breakage while removing deprecations. The main new feature in this version is hardware-accellerated decoding! However, this is a basic implementation: It always returns the uncompressed video to the CPU memory with no pipelining to filters. Even when coupled with hardware encoding in the avformat consumer it must transfer the video. Also, there is no automatic software/CPU fallback and no resource management.
- MODULES:
- Added support for hwaccel query string parameter to the avformat producer. It accepts the following values:
- vaapi (Linux/BSD), cuda (Linux), videotoolbox (macOS), d3d11va (Windows), dxva2 (Windows)
- The query string delimiter is a backslash followed by a question mark: ?. The backslash prevents interpreting the question mark from being a part of the file name. You must preface the file name with either avformat: or file: to make it work with melt (but not XML or via API because melt interprets name=value as a MLT property if there is no colon before equals).
- Added support for hwaccel_device query string parameter to the avformat producer. This is only used with vaapi (device path) and cuda, d3d11va, or dxva (number).
- Improved the usage of image slice threading in frei0r. This only applies when threads=0 and only works with some frei0r plugins that you must decide yourself.
- Added an ellipse item to kdenlivetitle producer.
- Added support for PNG and GIF as album art in the avformat producer.
- Added BT.2020 color space metadata to the avformat producer.
- Resolved many FFmpeg deprecations in the avformat producer making it possible to support AV1 decoding.
- Added a strobe fitler that periodically makes the alpha channel transparent.
- Added a new typewriter text filter (currently only works with the kdenlivetitle producer).
- Improved sound quality for lower pitch shifts in rbpitch.
- Fixed speed of trick play in the jack, rtaudio, sdl_audio, and sdl2_audio consumers.
- Fixed matrix for independent channels in swresample filter.
- Fixed leading zeros for the timer filter.
- Fixed flickering using affine with a luma transition.
- Fixed a crash using RGBA images in the qimage producer (regression in v6.22.0).
- Fixed brightness filter misbehaves on alpha > 1.
- Fixed writing flac format file does not set its duration in the avformat consumer.
- Fixed an infinite loop in rbpitch filter.
- Fixed ttl in the qimage producer.
- Fixed building with OpenCV 4.5
- Fixed artifacts with multiple HTML qtext filters and frame threading.
- Deprecated the start and end properties on the following (use property animation instead):
- brightness
- panner
- boxblur
- wave
- volume
- Deprecated the following services:
- data_show
- region
- transition filter
- autotrack_rectangle
- motion_est
- slowmotion
- OTHER:
- CMake:
- Fixed building without SWIG.
- Added many “MOD_…” options to explictly disable modules.
- Added src/tests and the option BUILD_TESTING, which defaults off.
- All dependency checks moved to top level CMakeLists.txt.
- Install melt man page.
- Install oldfilm SVG files.
- Added src/examples.
- Install framework/metaschema.yaml.
- Fixed plusgpl datadir.
- Added all swwig/ languages.
- Increased C++ standard to C++14.
- Added an AV1 encoding preset.
- Improved documentation of the requirement for C11.
- The minimum version of FFmpeg is v4.0 and Libav is no longer supported.
New in MLT 6.24.0 (Dec 7, 2020)
- Framework:
- Trigger a property-changed event on mlt_properties_pass_list.
- Fixed using a video transition with a video clip on an audio track.
- Reduce the amount of service caching to 2X #tracks to reduce memory usage.
- Modules:
- Added the pillar_echo filter to the plus module.
- Added a qtcrop filter to the qt module.
- Added html, resource, overflow-y, and _hide properties to the qtext filter for rich text.
- Added the filter choppy to the core module.
- Added slice threading to the brightness filter.
- Fixed compiling with OpenCV 4.
- Fixed the colors when using mlt_image_format=rgb24a with avformat consumer.
- Fixed using WebVfx in a Docker container.
- Fixed a possible crash in the timewarp producer on sources with non-integer frame rates.
- Fixed a regression in version 6.22 with multiple affine filters at the same time.
- Fixed possible abort or deadlock on recursive pthread mutexes in avformat producer.
- Fixed a crash in crop filter with large center_bias value when use_profile is 1.
- Fixed a white video frame appearing on threaded rendering in freeze filter.
- Fixed MLT XML DRD to permit empty playlists, which may occur on empty tracks in a multitrack.
- Fixed initializing QApplication in the qimage producer.
- Fixed interpolation when scaling with the affine rect and geomety properties.
- Fixed high memory usage with high factors of pitch shifting in the rbpitch filter.
- Fixed a crash on files with more than 32 streams in the avformat producer.
- Other:
- Fixed CMake build on MSYS2 and Windows Craft.
- Added the Python binding to the CMake build.
- Added the sdl (v1) module to the CMake build.
- Removed minrate and maxrate from the webm avformat consumer preset.
New in MLT 6.22.1 (Aug 1, 2020)
- This version fixes bugs associated with the preview scaling introduced in the previous version.
New in MLT 6.20.0 (Feb 17, 2020)
- Framework:
- Added consumer scaling:
- mlt_profile_scale_width()
- mlt_profile_scale_height()
- Mlt::Profile::scale_width()
- Mlt::Profile::scale_height()
- support for a double "scale" property to melt and the xml producer
- Fixed mlt_properties_set() with an invalid expression.
- Added new functions that do not evaluate expressions:
- mlt_properties_set_string()
- Mlt::Properties::set_string()
- Improved the service-caching heuristic in mlt_multitrack.
- Fixed possible crashes in mlt_playlist get_frame() and mlt_filter_process().
- Modules:
- Added the rubberband module with a rbpitch filter.
- Added pitch compensation to timewarp producer.
- Added the invert_scale property to the affine filter and transition.
- Added the reverse property to shape filter.
- Added support for text keyframes to the text and qtext filters.
- Added support for the CSRT and MOSSE algorithms in opencv.tracker filter.
- Fixed a crash on empty algo property in the opencv.tracker filter.
- Changed vorbis module to no longer be deprecated.
- Improved colorspace conversions in the avformat module.
- Fixed audio artifacts on initial seek to in point in avformat producer.
- Fixed the colorspace of the cached image in avformat producer.
- Fixed white video flashes on property changes in the qtext filter.
- Fixed a crash in the rotoscoping filter with large spline deviations.
- Fixed a crash in the sdi consumer if the driver is not loaded.
- Improved support for a video clip as luma producer to the luma transition.
- Fixed a crash in the matte transition.
- Fixed a crash when using invert property =1 in the composite transition.
- Other:
- Added a Dockerfile and integrated docker build into Travis CI.
- Added more avformat consumer presets:
- intermediate/DNxHR-HQ
- intermediate/ProRes HQ
- ALAC
- FLAC
- Fixed some parameters in the XDCAM and D10 avformat presets.
- Fixed link failure on some CPU architectures.
New in MLT 6.18.0 (Nov 12, 2019)
- Framework
- Fixed some data races in mlt_consumer, mlt_deque, and mlt_property.
- Fixed the mlt_events listener incorrect owner argument.
- Added support for the LC_ALL environmant variable on Windows.
- Fixed the argument to mlt_factory_init() not working on Windows.
- Fixed mlt_service_identify() not reliable in some use cases.
- Added some default and copy constructors and assignment operators to mlt++
- Filter()
- Filter( const Filter &filter )
- Filter& operator=( const Filter &filter )
- Producer( const Producer &producer )
- Producer& operator=( const Producer &producer )
- Properties( const Properties &properties )
- Properties& operator=( const Properties &properties )
- Service( const Service &service )
- Service& operator=( const Service &service )
- Transition()
- Transition( const Transition &transition )
- Transition& operator=( const Transition &transition )
- Added:
- mlt_luma_map:
- mlt_luma_map_init
- mlt_luma_map_new
- mlt_luma_map_render
- mlt_luma_map_from_pgm
- mlt_luma_map_from_yuv422
- Fixed preset overrides depend on the XML attribute order.
- Fixed serializing an animated property with a new length.
- Modules:
- Fixed interpolation in rotoscoping filter.
- Fixed crop filter not working with color producer.
- Fixed some data races in the sdl and sdl2 consumers.
- Fixed some data races in the avformat producer.
- Added a movit.flip filter to the opengl module.
- Fixed using filters on frei0r producers.
- Added support for in and out attributes on the consumer xml element.
- Fixed using an in point with the multi consumer.
- Fixed avfilter fails if the image size changes.
- Fixed showing superfluous decimals for seconds in the timer filter.
- Stop serializing an invalid producer as an “INVALID” text producer in xml.
- Fixed an access violation crash in wave filter.
- Added the meta.media.color_range property to the avformat producer.
- Fixed full range yuv422p not converted correctly in the avformat producer.
- Fixed the text filter not working with pango.
- Fixed a regression using dynamictext with pango.
- Added a position property to avfilter for filters that need position info.
- Fixed avfilter.subtitles not using the source position.
- Added an analyze property to vidstab filter. When set, analysis only starts and the results file written if true.
- Fixed crash combining the affine filter with the shape filter.
- Added interlace detection from AVCodecContext.field_order.
- Changed the avformat producer to not use the rescale.interp frame property. Previously, when reacale.interp == “nearest”, it would relax seeking. Now, seek accuracy is reduced during trick play (rewind or fast forward).
- Fixed swscale flags for auto-inserted scalers in avfilter.
- Fixed a double free crash in ladspa filter on channel count mismatch.
- Refactored the composite and luma transitions to use mlt_luma_map.
- Refactored the pgm producer and shape filter to use mlt_luma_map.
- Refactored the lumas module to use mlt_luma_map.
- The lumas module is now disabled by default and must be explicitly enabled.
- Added property animation to the threshold filter.
- Added a cairoblend_mode filter to the frei0r module to affect a frei0r.cairoblend transition used to composite/blend tracks.
- Added support for new vaapi options to the avformat consumer:
- connection_type: x11 or drm driver kernel_driver
- Fixed the timewarp producer with a colon in the filename.
- Fixed a relative file name with a colon in it in the xml producer.
- Fixed defaulting to album or poster art if there is another video stream.
- Fixed parameter animation in frei0r plugins when using frame threads. This change also enables frame-threading for more plugins.
- Improved the qtblend filter to not process alpha if no transparency.
- Added a background_color property to the qtblend filter.
- Fixed the opencv.tracker incorrect behavior on cut clips.
- Changed opencv.tracker to store absolute frame numbers.
- Fixed incorrect frame offset on render in opencv.tracker.
- Add an alpha_over property to luma transition. This addresses a behavior regression in version 6.14.0.
- Fixed noimagecache not working in the avformat producer.
- Other:
- Mlt++ now requires C11 compiler support.
- Fixed closing melt SDL2 window from window manager (i.e. close button).
- Added -repository option to the melt command.
- Added unit tests for Mlt::Event.
- Fixed returning image data for Python 3.
- Switch to python3 by default.
- Updated the prores encoding presets to set vendor ID and colr atom.
- Added a CMake build system. This is not yet prefered over the existing configure script and Makefiles and has less
New in MLT 6.16.0 (May 8, 2019)
- This version is released to facilitate packaging the latest version of Shotcut, which is using new APIs.
- Framework:
- Added functions to get/set a creation date to a producer:
- mlt_producer_get_creation_time()
- mlt_producer_set_creation_time()
- Mlt::Producer::set_creation_time()
- Mlt::Producer::get_creation_time()
- Modules:
- Fixed dance filter not showing when lower track is transparent.
- Refactored dynamictext filter to use mlt_producer_get_creation_time().
- Marked frei0r rgsplit0r plugin version < 1.1 as not thread-safe.
- Fixed possible null pointer crash in mlt_properties_serialise_yaml().
New in MLT 6.14.0 (Apr 1, 2019)
- Framework:
- Added mlt_profile_lumas_dir().
- Added mlt_frame_get_unique_properties().
- Added mlt_playlist_reorder() and Mlt::Playlist::reorder().
- Added some new convenience constructors to mlt++
- Producer(mlt_profile profile, const char *id, const char *service = NULL)
- Consumer(mlt_profile profile, const char *id , const char *service = NULL)
- Transition(mlt_profile profile, const char *id, const char *arg = NULL)
- Filter(mlt_profile profile, const char *id, const char *service = NULL)
- Tractor(mlt_profile profile, char *id, char *arg = NULL)
- Added Mlt::Transition::connect(Service&).
- Added unit tests for mlt_playlist.
- Fixed a crash on invalid transition track values in mlt_transition.
- Fixed a deadlock regression in v6.12.0 of mlt_consumer when starting from
- A paused state (producer speed=0).
- Modules:
- The avformat module now requires at least FFmpeg v2.4 or Libav 12.
- Added mask_start and mask_apply filters to the core module.
- Added qtext filter to qt module.
- Changed dynamictext and timer filters to use qtext.
- Fixed number of digits for seconds in timer filter.
- Added mlt_image_format property to color producer.
- Improved color accuracy of libswscale RGB->YUV conversion.
- Fixed frei0r producer not working with tractor.
- Fixed decklink consumer stalling on dropped frames.
- Generate lumas for 16:9, 9:16 (vertical), and square aspect ratios.
- Fixed crash in qimage when alpha_size is zero.
- Fixed the mlt_consumer channels property not being passed to multi consumer.
- Fixed the shape filter for full range color and crashes.
- Converted the shape filter to use mlt_animation.
- Added a use_mix property to the shape filter.
- Fixed invert=1 and mix=100 gives wrong image in shape filter.
- Fixed a possible free null pointer in the linsys sdi consumer.
- Fixed using destroyed temporary object in qimage.
- Fixed a possible null pointer dereference in the spot_remover filter.
- Fixed memory leak on swr_convert() failure in swresample filter.
- Fixed possible null pointer dereference in affine when not using rect.
- Fixed loading image sequence on Windows in qimage.
- Fixed some null pointer crashes using Movit opengl services.
- Fixed sdl2 consumer crashes during initialization on Linux or BSD.
- Fixed distorted image using melt_file.
- Fixed qimage build on Qt version < 5.5.
- Added offset property to the timer filter.
- Changed the boxblur hori & vert properties' minimum to 0.
- Fixed crash in duplicate frame on rotated videos.
- Added automatic scaling and padding to avfilter.
- Fixed field order when encoding progressive as interlace.
- Fixed frei0r plugins to use the number of slices from the threads property.
- Fixed over compositing with transparent clips in luma transition.
- Added sliced processing to dissolve-with-alpha using the threads property.
- Added createdate keyword to dynamictext filter.
- Fixed possible crash changing audio_index in avformat producer.
- Fixed small memory leaks in xml consumer, jackrack, and timewarp producer.
- Fixed compiling opencv module with OpenCV > 3.
- Other:
- Added vertical video profiles
- Vertical_hd_30
- Vertical_hd_60
- Mlt++ now requires C++11 compiler support.
- Added --disable-windeploy to configure to keep bin & lib folders on Windows.
- Added support for consumer in & out to melt.
- Fixed color accuracy of lossless/Ut Video preset and use pix_fmt yuv422p.
- Fixed x264 lossless preset to use crf=0.
- Fixed compiling with mingw32.
- Fixed build with Python 3.
New in MLT 6.12.0 (Nov 27, 2018)
- Framework:
- Changed buffer property to be mutable and adaptive to speed property in mlt_consumer.
- Changed macOS RELOCATABLE build to use standard app bundle layout:
- lib/mlt -> ../PlugIns/mlt
- lib/frei0r-1 -> ../PlugIns/frei0r-1
- lib/ladspa -> ../PlugIns/ladspa
- share/mlt -> ../Resources/mlt
- share/movit -> ../Resources/movit
- Fixed a_track of transitions matching deleted track in mlt_tractor_remove_track().
- Fixed multi-thread race crash in mlt_properties_clear().
- Fixed possiblle null pointer crash in mlt_property_get_rect() and mlt_property_get_time().
- Fixed non-animated strings containing ‘;’ or ‘=’ in mlt_animation_parse().
- Fixed crash in clear_property() with mlt_animation.
- Modules:
- Added a generic text filter to the plus module.
- Added a timer filter to the plus module.
- Added audio timeout handling to sdl2 consumers.
- Added spot_remove filter to the plus module.
- Added dds, ico, and webp filename extensions for qimage producer.
- Added support for color_range property in avformat consumer: “pc” or “jpeg” for full range, otherwise limited range.
- Added a window property to the audiowaveform filter.
- Added MM:SS.SS to the timer filter.
- Added query string param “multi” to the xml producer to force using the multi consumer.
- Improved WebP image support in avformat producer.
- Integrated hwupload filter in avformat consumer if using VAAPI codec.
- Changed count producer to use pango if qtext not available.
- Changed qt moduled to not call XInitThreads()
- Changed color producer to only set alpha on frame if rgb24a requested or not opaque.
- Changed the xml producer to pass quality and performance parameters to the multi consumer.
- Fixed sdl2_audio distortion (regression in v6.10.0).
- Fixed dynamictext filter to not error on empty text.
- Fixed dynamictext aliased (regression in v6.10.0).
- Fixed qimage outputs premultiplied if scaled internally.
- Fixed crash in cbrts consumer if running property was never set.
- Fixed rendering edges of some typefaces in qtext producer.
- Fixed qimage fails to load with wrong filename extension.
- Fixed affine dark right and bottom edge artifacts regression in (v6.10.0).
- Fixed support for vp8 and vp9 with alpha channel in avformat producer.
- Fixed interpolation mode selection in qimage producer.
- Fixed crash in qimage with alpha channel.
- Fixed some AAC MP4 files start playing from middle in avformat producer.
- Fixed crash in avfilter if initialization fails.
- Fixed crash in mix when frame rate is very low.
- Fixed crash on missing luma file in composite transition.
- Fixed A/V sync on some files in avformat producer.
- Fixed seeking on audio filter with album art in avformat producer.
- Fixed colorspace conversion in avformat consumer.
- Other:
- Added more avformat consumer presets:
- alpha/Quicktime Animation
- alpha/vp8
- alpha/vp9
- alpha/Ut Video
- lossless/Ut Video
- Added square video profiles:
- square_1080p_30
- square_1080p_60
- Added support for nodejs to the swig bindings.
- Changed configure script to require opencv module be explicitly enabled.
- Numerous spelling fixes in source code and comments thanks to codespell.
New in MLT 6.10.0 (Jul 3, 2018)
- This version fixes bugs and supports serializing animation keyframes with a
- specified time format (previously only frame number).
- Framework:
- Reverted mlt_pool change in v6.8.0 pending further testing.
- (USE_MLT_POOL compiler define is now a 0/1 boolean, defaults to 1.)
- Fixed crash regression in v6.8.0 "parsing non-animated string as an animation."
- Added pointer checks to mlt_animation.
- Changed producer cache size heuristic in mlt_multitrack to be more liberal.
- Fixed handling reserved characters in names for YAML in mlt_properties.
- Added clamping to prevent computing negative in and out points to mlt_producer.
- Added functions to serialize animation with a time format:
- mlt_animation_serialize_cut_tf()
- mlt_animation_serialize_tf()
- mlt_property_get_string_tf()
- mlt_property_get_string_l_tf()
- mlt_properties_get_value_tf()
- Mlt::Properties::get(int, mlt_time_format)
- Mlt::Animation::serialize_cut(mlt_time_format, int, int)
- Added functions to clear a property to mlt_properties:
- mlt_property_clear()
- mlt_properties_clear()
- Mlt::Properties::clear()
- Modules:
- Fixed enabling sliced pix_fmt conversion in avformat producer.
- Fixed incorrect seek and sync on audio files with discard packets.
- Added support for avcodec_send_frame() API to avformat consumer.
- Fixed compile errors with Libav master.
- Fixed a crash in affine transition.
- Fixed a crash in ladspa filters when consumer frame rate is low (e.g. <= 8).
- Fixed a crash in boxblur filter.
- Added animation support to boxblur hori and vert properties.
- Fixed a crash in movit.convert.
- Fixed incorrect alpha in affine transition blending routine.
- Converted frei0r from deprecated mlt_geometry to mlt_animation API.
- Fixed tilde in text string for pango producer.
- Fixed using more than one channelcopy filter.
- Fixed the mono filter reducing volume level.
- Fixed degraded audio scrubbing in sdl2_audio consumer.
- Converted dynamictext filter to use affine transition for more correct
- alpha compositing and sub-pixel positioning.
- Added time format support for animation keyframes to the xml consumer.
- Added animation support to more affine transition properties:
- fix_rotate_x
- fix_rotate_y
- fix_rotate_z
- fix_shear_x
- fix_shear_y
- fix_shear_z
- scale_x
- scale_y
- Fixed gaps in text when characters overlap in qtext and kdenlive producers.
- Fixed a crash in pixbuf producer with multiple render threads.
- Converted the oldfilm vignette filter from mlt_geometry to mlt_animation.
- Other:
- Numerous updates to mlt-xml.dtd.
- Categorized many of the encode presets (using meta.preset.name).
New in MLT 6.8.0 (May 11, 2018)
- This version improves support for multi-channel audio and adds some new manipulation functions to the mlt_animation API.
- Framework
- Added support for musl C library.
- Added functions for audio channel layouts:
- mlt_channel_layout_name()
- mlt_channel_layout_id()
- mlt_channel_layout_channels()
- mlt_channel_layout_default()
- Added channel_layout property to mlt_consumer.
- Added mlt_channel_layout enum.
- Disabled memory pooling by default and require compile macro USE_MLT_POOL to re-enable it.
- Fixed reliability of keyframed properties serializing properly.
- Fixed parsing non-animated string as an animation.
- Added more functions to mlt_animation:
- mlt_animation_key_set_type()
- mlt_animation_key_set_frame()
- Mlt::Animation::key_set_type()
- Mlt::Animation::key_set_frame()
- Modules
- Fixed some crashes in qimage producer especially with alpha channel.
- Fixed >2 channel audio output in the SDL consumers.
- Fixed >2 channel audio output in the rtaudio consumer on Windows.
- Fixed vorbis encoding with FFmpeg v3.4+.
- qimage and qtext are now higher priority than gtk2 pixbuf and pango by the loader producer.
- Added support for more channel counts to decklink consumer.
- Added swresample filter based on libswresample from FFmpeg. This is now the preferred channel count normalizing filter used by the loader producer.
- Fixed the strange “Undefined constant” and “Unable to parse option value” log messages in the the avformat consumer.
- Fixed GIF and DPX writing in avformat consumer.
- Reduced the memory usage of the affine transition and filters.
- Fixed a crash in kdenlivetitle producer.
- Fixed a crash in the rotoscoping filter.
- Fixed frame rate reported in Matroska and WebM files produced by the avformat consumer.
- Added sdl2_audio consumer.
- Fixed alpha channel support for more pixel formats in the avformat producer.
- Converted the affine transition to use mlt_rect and mlt_animation.
- Fixed LADSPA plugins with mono channel audio.
- Other
- Fixed a melt command line parsing bug when argument supplied to -transition.
- Fixed melt with SDL2 on Windows not using stdio and stderr.
- Improved speed of the vp9 avformat consumer preset.
- v6.6.0 released
New in MLT 6.6.0 (Jan 23, 2018)
- Framework:
- Added a thread pool to mlt_slices: ?mlt_slices_run_normal()
- mlt_slices_run_rr()
- mlt_slices_run_fifo()
- mlt_slices_count_normal()
- mlt_slices_count_rr()
- mlt_slices_count_fifo()
- MLT_SLICES_COUNT environment variable
- Added mlt_log_timings_now() to mlt_log.
- Added mlt_image_yuv422p16 image format.
- Added mlt_image_format_planes() and mlt_image_format_id() to mlt_frame.
- Added mlt_service_disconnect_all_producers() and Mlt::Service::disconnect_all_producers()
- Fixed accuracy of mlt_time_format conversions.
- Fixed mlt_filter_get_progress() never reaching 1.0.
- Fixed divide by zero in mlt_filter_get_progress().
- Modules:
- Added sdl2 module!
- Added sum property to mix transition for simple mixing without dynamics.
- Added TLD and KCF tracking modes to opencv module.
- Added CSV (comma-separated values) simple slideshow to pixbuf producer.
- Added jack filter to jackrack module.
- Added sliced processing to frei0r.
- Added sliced processing to composite transition.
- Added sliced processing to avformat producer pixel format conversion.
- Added sliced processing to affine transition and filter.
- Converted volume and pan filters to floating point.
- Added rotate_center property to qtblend transition and filters.
- Added meta.media.variable_frame_rate (VFR detection) to avformat producer.
- Added support for external libebur128.
- Updated internal libebur128 to latest.
- Added 10-bit capture to decklink producer.
- Added mlt_image_yuv422p16 to fieldorder filter, avcolour_space filter, and avformat consumer.
- Added no_profile property to xml consumer.
- Various ndi module fixes and improvements.
- Fixed setting color_trc in multi consumer.
- Fixed kdenlive title transparency.
- Fixed incorrect alpha channel breaking freeze filter with qtblend transition.
- Fixed transparency of pixbuf images with qtblend transition.
- Fixed some crashes in new qtblend transition.
- Fixed building qt module with C++11 for Qt 5.7+.
- Fixed reporting accurage length for image sequences in qimage and pixbuf.
- Fixed extra audio samples added to end of file in avformat consumer.
- Fixed rawvideo export in avformat consumer.
- Fixed multi-threading wtih FFmpeg 3.2+ in avformat module.
- Fixed JPEG album art in avformat producer.
- Removed filter_avresample (dropped by FFmpeg).
- Stop flushing audio buffer in decklink consumer.
- Fixed field order handling in decklink consumer.
- Make composite transition field order aware.
- Fixed nesting mlt_tractor with opengl module.
- Fixed kdenlive titler crash on resized frame.
- Other:
- Various memory leak fixes.
- Fixed opening files with extended chars on Windows (framework and modules).
New in MLT 6.4.1 (Apr 25, 2017)
- There was a problem in the symbol version declaration for the new Mlt::Profile::is_valid() method that was breaking some scripting language bindings including Python.
New in MLT 6.4.0 (Apr 25, 2017)
- Framework:
- Added functions for multi-threaded slice-based image processing: mlt_slices_init, mlt_slices_close, and mlt_slices_run.
- Added Mlt::Profile::is_valid().
- Added MLT_DIRLIST_DELIMITER to mlt_types.h.
- Renamed mlt++/config.h to mlt++/MltConfig.h.
- Fixed mlt_properties_set_lcnumeric() on macOS.
- Fixed address of Free Software Foundation in comment headers.
- Modules:
- Added crop_to_fill property to composite transition.
- Added sliced_composite property to composite transition.
- Added peak and true peak properties to loudness_meter filter.
- Added qtblend transition and filter to qt module.
- Added ndi (NewTek NDI) module with producer and consumer.
- Added opencv module with opencv_tracker filter.
- Added line_spacing, strech, wrap_width, and wrap_type properties to pango producer.
- Added oblique value for style property to pango producer.
- Added fontmap-reload event to pango producer.
- Added support for pkg-config to sdl module.
- Added .kra (Krita Image) file name extension to loader.dict.
- Improved performance of kdenlivetitle producer.
- Improved decklink producer and consumer.
- Improved accuracy of seeking on lossy compressed audio in avformat producer.
- Improved mix transition using 32-bit floating point.
- Fixed avfilter when image format changes.
- Fixed loading relative file name in vidstab filter.
- Fixed crash on Windows with avfilter.
- Fixed parsing LADSPA_PATH with semi-colon delimiter on Windows.
- Fixed parsing FREI0R_PATH with semi-colon delimiter on Windows.
- Fixed reading relative path with backslash (Windows) in xml producer.
- Fixed loading relative file name for av.file (avfilter).
- Fixed loading multiple LADSPA plugins on some systems.
- Fixed compile error when not configured with –enable-gpl.
- Fixed loading in avfilter.lut3d in locales with comma decimal point.
- Fixed a possible crash in resample filter.
- Fixed alpha channel in kdenlivetitle producer.
- Fixed possible crash in pixbuf and qimage producers.
- Fixed count when counting down in count producer.
- Other:
- Moved some avformat presets from lossless to new intermediate folder.
- Added a YouTube avformat consumer preset.
- Changed metadata.rb metadata publisher to output Markdown.
New in MLT 0.9.6 (Mar 25, 2015)
- A major regression slipped into the 0.9.4 release plus some other good fixes rolled in just after that release prompting this new release. Please discontinue using version 0.9.4 and upgrade.
New in MLT 0.9.4 (Mar 25, 2015)
- This is a bugfix and minor enhancement release. Here are some of the notable changes and enhancements.
- Framework:
- Added color_trc (transfer characteristic) property to mlt_consumer and mlt_frame.
- Added Mlt::Profile::set_display_aspect(int, int).
- Added mlt_pool_stat().
- Added mlt_smpte_df and mlt_smpte_ndf to mlt_time_format for non-drop-frame timecode support.
- Added Mlt::Tractor::Tractor(Mlt::Profile&).
- Added mlt_frame_get_alpha().
- Added default, copy, and assignment methods to Mlt::Frame.
- Added Mlt::Filter::process(Mlt::Frame&).
- Modules:
- Added support for color_trc property to avformat and opengl modules.
- Performance improvements for composite and matte transitions.
- Added fill, halign, and valign properties to affine transition and filter.
- Added producer.* and consumer.* properties to consumer producer.
- Fixes for libavformat and libavcodec v56.
- Dropped support for FFmpeg < v1.0 and Libav < v9.
- Added a lumakey filter.
- Added a localtime property to dynamictext filter.
- Added date/time format string support to dynamictext filter.
- Added no_root property to xml consumer.
- Added audio-only tone producer.
- Added drop property to count producer.
- Added caching to pango producer to improve performance.
- Other:
- Added WMV and WMA avformat consumer presets.
- Added a ProRes-Kostya avformat consumer preset.
- Changed VP9 WebM preset to use Opus audio codec.
- Added 4K UHD and 2.5K QHD profiles.
- Added x265-medium and x265-medium-pass1 avformat consumer presets.
- Added a unit test for Mlt::Frame.
New in MLT 0.9.2 (Jun 30, 2014)
- Framework:
- Added "boolean" parameter type and "argument" parameter attribute to service metadata schema.
- Added mlt_properties_frames_to_time().
- Added mlt_properties_time_to_frames().
- Changed mlt_events_fire() to return the number of listeners.
- Added consumer-thread-create and consumer-thread-join events.
- Added LC_NUMERIC handling for Windows.
- Added mlt_playlist_mix_out() and mlt_playlist_mix_in().
- Added mlt_properties_from_utf8().
- Modules:
- Renamed "qimage" module to "qt".
- Added support for Qt 5.
- Added qtext producer, which is now prefered by dynamictext filter over pango.
- Added xml-nogl consumer.
- Consolidated dgraft, burningtv, and rotoscoping into new plusgpl module.
- Added vid.stab module with vidstab and deshake filters. This depends on external vid.stab library unlike its predecessors.
- Rewrote opengl module.
- Added loudness filter based on EBU R128.
- Added rgblut filter to plus module.
- Added luma-only liftgammagain filter to plusgpl module.
- Added lift_gamma_gain filter to plus module.
- Added support new keyframable animated properties to brightness, volume, panner, boxblur, wave, sepia, charcoal, burn, gamma, grain, dust, lines, tcolor, oldfilm.
- Added movit.luma transition to opengl module.
- Added cbrts consumer to plusgpl module.
- Removed the "ppm" PPM-pipe producer.
- Added more VITC functionality to decklink module.
- Added matte transition to core module.
- DEPRECATION WARNINGS:
- Deprecate videostab module with videostab and videostab filters. This will not be removed soon in order to keep old scripts and projects functional.
- Deprecate the dv (libdv), kino, and vorbis modules. These are scheduled to be removed in next release.
New in MLT 0.9.0 (Jun 3, 2013)
- New API features:
- The time of a keyframe can be set using frame number, time clock string, or a timecode string.
- A negative time value makes it relative to the end of an object's duration.
- Keyframes support 3 forms of interpolation: discrete (no interpolation), linear, and a smooth Catmull-Rom spline.
- Supports a new mlt_rect propery type in addition to string (discrete only), integer, and floating point.
- API for most apps is just a few new, simple methods on the Properties object.
- Integrated with the OpenGL-based effects only at this time to ease the migration - will be extended to other plugins in the next version or two.
- Other highlights of the release:
- Improved pause behavior when using buffered rendering in mlt_consumer.
- Added mlt_color type.
- Deprecated mlt_geometry API.
- Support for the latest versions of FFmpeg and Libav (but dropping support for 0.5 and 0.6 versions).
- Added alpha channel output to avformat consumer.
- Added reconnect and exit_on_disconnect properties to avformat producer.
- Added qglsl consumer to use opengl with avformat, sdi, and decklink.
- Added avsync module with blipflash producer and consumer for testing.
- Added new "count" producer to gtk2 module.
- Changed frei0r to use index-based property names making it impervious to param name changes (param name still accepted for compatibility).
- Added default parameter values to frei0r metadata.
- Added more python example web services.
- Started a unit test suite.
New in MLT 0.8.8 (Jan 21, 2013)
- This is purely a bugfix/maintenance release. If you are using a very recent version of FFmpeg or libav that has switched to using planar audio in its API you will need this.
New in MLT 0.8.6 (Nov 15, 2012)
- Added playlist-next event and PlaylistNextListener to Ruby binding
- FFmpeg 1.0 and libAV master compatibility
- Improvements to motion_est filter to generate keyframes for apps
- Added audiolevel (measurement) filter
New in MLT 0.8.2 (Aug 29, 2012)
- Overhaul of A/V sync with libavformat-based inputs.
- Fix a major memory leak introduced in previous release.
- Fixes to problems revealed by Coverity Scan static analysis.
- Improved encoding presets.
- melt can now be built without SDL with define MELT_NOSDL, which is handy for running it as a child process on Windows and OS X.
- melt can now be signaled to quit, which also makes it more useful as a child process.
New in MLT 0.8.0 (Jun 2, 2012)
- The minor version is increased due to the addition of time properties!
- The soname version increased in the process because some mlt_property functions changed; however, very few if any apps actually directly use mlt_property preferring to use mlt_properties instead.
- In addition:
- improve seek speed on AVCHD when using FFmpeg v0.9.1+ (sorry, not Libav!)
- composite and dissolve speed improvements on x86-64
- improve performance of caching in image producers
- add device enumeration to decklink producer and consumer
New in MLT 0.7.8 (Feb 14, 2012)
- Added a "multi" consumer - multiple, simultaneous outputs
- Added framerate adaption to "consumer" producer and "multi" consumer
- Can now use YADIF deinterlacer with decklink producer
- Added "rtaudio" consumer for native audio support on multiple platforms
- Added ability to request image format closest to source (mlt_image_none)
- Added more audio formats
- Added vqm (video quality measurement) transition
New in MLT 0.7.6 (Nov 1, 2011)
- This is a bugfix and minor enhancement release.
- Improved support for v53 of libavcodec/libavformat (0.7 and 0.8 releases)
- Major DeckLink consumer improvements
- Much more metadata
- Added audio-only JACK consumer
- Added video stabilization filters
- Added dual pass audio normalization to sox filter
- Added VITC and VANC capture to DeckLink producer
- Added support for writing timecode tracks
- Added MLT, frei0r, and SoX version to xml serialization
- Added D-10, XDCAM, DNxHD, and Sony-PSP encoding presets
- Can now use rotoscoping for masking filters
- Added dynamictext filter makes burned-in timecode and similar easier
- Added support for consumer element in MLT XML
- Added outlining, padding, and alignment to pango filter
New in MLT 0.7.4 (Nov 1, 2011)
- This is a bugfix and minor enhancement release.
- Framework
- Important: change consumer property profile to mlt_profile.
- Improve frame-dropping and drop_max property to mlt_consumer.
- Added support for presets for any service through special property named "properties"
- Added mlt_profile_from_producer() for auto-profile.
- Added mlt_properties_set_lcnumeric() and mlt_properties_get_lcnumeric().
- Added LC_NUMERIC to YAML Tiny metadata schema and parser.
- Modules
- Added support for more than 2 channels of greater than 16-bit audio.
- Added discrete filters for each SoX effect.
- Added discrete filters for each LADSPA audio plugin.
- Added automatic service metadata for SoX and LADSPA plugins.
- Added at least basic metadata for nearly every service.
- Added support for decklink on Windows (tested) and Mac OS X (untested).
- Added support for JACK transport synchronization.
- Added blacklist.txt to jackrack plugin (contains dssi-vst).
- Rewrite of decklink consumer.
- Added support for live network, multi-stream device, and pipe/fifo sources in avformat producer.
- Added LC_NUMERIC attribute to root XML element.
- Melt
- Added '-query presets' option.
- Added -jack option for transport synchronization.
- Send -help and -query output to stdout to make it convenient for pagers.
- Other
- Added mlt.Frame.get_image() for Python.
- Removed configure option --avformat-svn.
- Fixes for locales that use comma for decimal point.
- Added presets for DVD, DV, x264, and WebM encoding.
- Since FFmpeg forked and there were a few releases, there is no recommended version at this time. With that said, there were changes to accomodate the API changes with some moderate testing of the 0.6, 0.7, and 0.8 series releases of both FFmpeg and Libav.
New in MLT 0.7.2 (Nov 1, 2011)
- This is a minor release to fix a few things between the 0.7.0 release and the release of Kdenlive 0.8. I recommend Kdenlive v0.8 users to upgrade to this version of Mlt. Beyond that there are some exciting additions to the Blackmagic Design DeckLink plugin!
- Framework
- Added mlt_profile_list().
- Modules
- Added decklink producer (i.e. capture, live encoding).
- Added keyer output for decklink consumer.
- Added AVOptions to the avformat service metadata.
- Added support for new major API versions (53) of FFmpeg.
- Melt
- Added '-query profile' option.
- Added '-query formats', '-query audio_codecs' and '-query video_codecs'.
New in MLT 0.7.0 (Nov 1, 2011)
- This is a major new release due to signficant additions to API, framework, and build.
- Build
- Added support for Windows via MinGW.
- Enabled linsys module by default.
- Disabled VDPAU by default and added --avformat-vdpau to enable it.
- Added support for swfdec 0.7.
- Framework:
- Added parallelism to mlt_consumer when 'real_time' > 1 or < -1.
- Added mlt_deque_insert() and mlt_deque_peek().
- Added mlt_profile parameter to mlt_producer_new().
- Let transitions with no out point run forever.
- Added mlt_frame_unique_properties().
- Added mlt_frame_set_image() and mlt_frame_set_alpha().
- Added mlt_image_format_size() and mlt_audio_format_size().
- Added mlt_filter_get_length() and mlt_transition_get_length().
- Added mlt_filter_get_progress(), mlt_transition_get_progress(), and mlt_transition_get_progress_delta().
- Added mlt_filter_get_position() and mlt_transition_get_position().
- Added mlt_properties_lock() and mlt_properties_unlock().
- Modules
- Added rotoscoping filter.
- Improve libavdevice support (V4L2, ALSA, libdc1394).
- Added support for new FFmpeg metadata API.
- Various fixes, refactoring, and improvements.
New in MLT 0.6.2 (Nov 1, 2011)
- Added force_aspect_ratio property to pixbuf and qimage producers.
- Added opacity handling in geometry property of the affine filter and transition.
- Added use_normalised property to affine filter.
- Added always_active property to affine transition.
- Fix building on NetBSD.
New in MLT 0.6.0 (Nov 1, 2011)
- Framework
- mlt_profile
- Added (Y'CbCr) colorspace attribute.
- Added mlt_profile_clone().
- Added mlt_consumer_position() and Mlt::Consumer::position().
- Added Mlt::Properties::wait_for(string).
- Added a version API: mlt_version_get_int() and others.
- Added Mlt::Producer::pause().
- Added mlt_frame_write_ppm() for debugging.
- Melt
- Added automatic detection of profile from first input when profile not specified.
- Now exits with error result when consumer fails fatally.
- Modules
- Added swfdec producer for Flash files including variables support. (Does not support audio.)
- Added consumer for Blackmagic Design DeckLink SDI and Intensity HDMI.
- Added Y'CbCr colorspace conversion and option to use full luma range.
- Added (de)serialization of profile to XML.
- Added support for #frame# variable to the data_show filter.
- Added support for frei0r string parameters.
- Make FFmpeg formats and codecs available as properties (not just stderr).
- Try to load .xml file as MLT XML.
- Added a consumer-sdl-paused event to sdl_preview.
- Added a consumer-fatal-error event to avformat.
- Change composite transition to default to progressive rendering; field-based rendering available only explicitly.
New in MLT 0.5.10 (Nov 1, 2011)
- This is a quick followup to the 0.5.8 release to address an issue I want to address immediately. I noticed an extra unconditional colorspace conversion to and from RGB was added for all YCbCr (YUV) video sources. In addition, I have enabled the avcolor_space filter on OS X since it works now.
New in MLT 0.5.8 (Nov 1, 2011)
- Added EXIF-based auto-rotation of images to pixbuf and qimage producers.
- Improved quality of libswscale-based image conversion and scaling.
- Added channelswap and panner audio filters; panner also does balance.
- Improve audio waveform and add audiowave video filter.
- Enhanced luma filter to work with animated filters such as affine.
- Automatically crop 8 bottom lines of 1088 source in a 16:9 project (common in Canon EOS digital cameras).
- Added support for inline images in kdenlivetitler.
New in MLT 0.5.6 (Nov 1, 2011)
- Added interpolation to the affine transition and filter.
- Added multi-track audio encoding to avformat consumer.
- Added interlaced field rendering to kdenlivetitle producer.
New in MLT 0.5.2 (Nov 1, 2011)
- This is a minor maintenance release, but it is interesting because it now enables usage of libswscale as the default choice for image scaling, image format conversion, and color space conversion. That gives better quality and performance. In addition, there are some improvements in the sdl_preview consumer to make it suitable for use in OpenShot 1.1.