Free all in one audio/video ffmpeg batch encoder
Converts and re-encodes music to 432Hz
Free professional video converter Windows|Mac|Linux
Batch audio encoding script for Linux/BSD
Linux Audio Converter / Tagger / CD Ripper
Command-line mass conversion of any directory tree of audio files.
simple GUI application for FFmpeg.
Easy to use shell script for batch conversion MP3 files to AAC+
The Open Conversion Toolkit converts files from one type to another