2016-10-12 0:42 GMT+02:00 Alexey Eromenko <al4...@gmail.com>: > The important encoders I use myself are libmp3lame, libvpx, libx264, > libx265 and more... > > Except for AAC audio codec, everything else uses 3rd party encoders,
Everything? Like mpeg2video, mpeg4 asp, msmpeg4, mp2, ac-3, e-ac-3 and hundreds more? > but decoders for ffmpeg are built-in, right ? External decoders like libopenjpeg exist though. > Why so ? lame is older than FFmpeg, libvpx was written by a company to support their video format (it wouldn't have made sense for them to implement an FFmpeg-based encoder) and x265 is a direct successor of x264. At the time x264 was started, FFmpeg still tried to implement all encoders themselves (and the saying was "first write a working encoder, then start with the decoder implementation"). There is a very old post somewhere that explains why x264 was written as an independent project, in retrospect this was a large advantage for the single developers. The main reason is that nobody sent patches for the mentioned encoders so far... I believe it is possible to write a (not top-quality) mp3 encoder on top of FFmpeg (just needs a bitstream filter), but nobody cared. Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".