Extracts video and audio from FLV files without decompressing or recompressing. The video is saved as AVI (H.263/FLV1 and VP6/VP6F) or raw elementary stream (H.264/AVC). The audio is saved as MP3, AAC (with ADTS headers), Speex, or WAV (PCM).
NOTE: You cannot change the video/audio format that FLV Extract outputs. It depdends on what is contained in the FLV file. If you need a different format, you'll have to use other software to convert it. Or, ffmpeg (command line) can extract from FLV and convert in one step.
NOTE: The AVIs will not play unless you have the right decoders. ffdshow-tryouts can decode FLV1 and VP6F; make sure they're enabled in its configuration dialog.
NOTE: H.264 elementary streams are not widely supported by players, but you can use DGAVCDec to load them with AviSynth for editing.
Command line version 1.6.2 has been ported to C++ by TheProphet. It is available as source code and requires Boost to compile.