WinFF is a program that lets you convert between several media formats, including AVI, MPEG, MOV, MKV, MP3, VOB and OGG.

The user interface consists of a standard window in which you can add audio and video to the queue by using the file browser or the "drag and drop" method (batch conversion is supported).

So, you can remove an item or clear the list, play an audio or video file, preview results and configure output details when it comes to the format, preset and location (you can optionally check the "Use Source Folder" option).

Furthermore, if you click the "Options" button, several more tabs appear, which allow you to manually input values for the video bitrate, frame rate, size and aspect ratio, as well as audio bitrate, sample frequency rate, channels, volume and synchronization.

But you can also crop a video (by setting the top, bottom, left and right margins), go to a particular time to record it and set advanced command-line parameters.

Additionally, you can import and edit presets, enable WinFF to shut down the computer after conversion, as well as configure program preferences (e.g. default destination directory, priority).

The program uses a low-to-moderate amount of system resources and quickly completes a task while managing to keep a good image and audio quality. There's also a user documentation with snapshots at your disposal.

Too bad the output videos bear a watermark of the developer. Also, you cannot select predefined values  to configure audio and video options, so you must have some experience to do this manually. Otherwise, we strongly recommend WinFF to all users.