AC3Filter is a DirectShow filter for AC3 decoding used to play AVI with AC3 audio tracks and MPEG2. It is distributed absolutely for free (FREEWARE, OpenSource).

Here are some key features of "AC3 Filter a RC":

· Decoding of AC3/DTS/MPEG1/2 Audio Layer I/II formats
· Support of DVD, AVI/AC3, AVI/DTS, WAV/AC3 and WAV/DTS
· Audio processing for any source
· Decomposition of any source to 6 channels
· Full information about audio track format
· Support of SPDIF passthrough mode
· Multi-channel audio output from all sources on SPDIF (on-the-fly AC3 encoding)
· Per-channel amplification for all input/output channels
· Per-channel delays (for compensation of distance difference to speakers)
· Automatic gain control
· Clipping
· Dynamic Range Compression, DRC
· Level indication for input and output channels
· Matrix mixer and ability of direct modification of mixing matrix
· Dolby Surround / Pro Logic / Pro Logic II downmix

What's New in This Release: [ read full changelog ]

· Precise PCM passthrough
· Fixed: Noise on LPCM 20/24bit tracks
· Fixed: Delay settings did not work after restart.
· German translation updated (thanks to Philipp Wode)
· Japan translation added (thanks to tnetsixenon)