FFmpeg is a complete solution to record, convert and stream audio and video. It includes libavcodec, the leading audio/video codec library. FFmpeg is developed under Linux, but it can compiled under most operating systems, including Windows.
Relation between FFVCL and FFmpeg
Because FFVCL is a direct wrapper of FFmpeg's libavcodec APIs, it is able to reflect the power of FFmpeg library. And it is more flexible and more powerful than the official FFmpeg command line tool. At the same time, FFVCL is very easy to use. Therefore, FFVCL is better than FFmpeg tool in some measure.
Supported Formats
Decoders: WAV, MP3, FLV, H263, H264, MPEG4, WMV
Encoders: AC3, MP3, FLV, XviD, X264, MPEG4, WMV
Parsers: AAC, AC3, H263, H264, MJPEG, MPEG, VC1
Demuxers: AC3, AVI, FLV, MOV, OGG, MPEGPS/TS, RM
Muxers: ASF, iPod, MPEG, OGG, PSP, VCD/SVCD/DVD