[book club issue 13] +ffmpeg open source project

FFmpeg Adopted by many open source projects , such as ffmpeg2theora,VLC, MPlayer, HandBrake, Blender, Google Chrome etc. .

because FFmpeg Is in LGPL/GPL Issued under the agreement （ If some of them are used GPL The protocol release module must use GPL agreement ）, Anyone can use... Freely , But it must be strictly observed LGPL/GPL agreement . Many playback software are used FFmpeg Code for , But they did not abide by LGPL/GPL agreement , No source code is exposed . We should be ashamed of this infringement .

2009 To join in FFmpeg Playback software for ： Storm video 、QQ Video and sound 、KMP、GOM Player、 PotPlayer It's all in it .

2009 year 2 month , Korean name soft KMPlayer By FFmpeg Open source projects find that they use their code and binaries , But not according to the regulations / The Convention is open and explained accordingly / Source code . So he was reported , Into the FFmpeg The shame blacklist on the official website .

2009 year 5 month , Net friend cehoyos Download the storm video software , After decompression, it is found that the installer contains a large number of open source and private decoders ：avcodec,avformat,avutil,x264,xvid,bass,wmvdmod etc. .

2009 year 7 month 22 Japan , Chen Junhao ( Format factory author ) Because of the use of ffmpeg and RMVB Code library for , Yes FFmpeg Decoding / Coding algorithm , In violation of the FFmpeg Of LGPL agreement , On the 2009 year 7 month 22 Japan FFmpeg Of “ Stigma ” On .

2009 year 11 month , Netizen Xiang FFmpeg report , Pointed out that QQ Audio visual credit Only the modified FFmpeg Source download , Claim to be LGPL license . But it's actually modified ffdshow, It's using GPL license .