[Ffmpeg-devel-old] Re: [Ffmpeg-devel] License violation?

[Michael Niedermayer]

Hi

On Tuesday 29 March 2005 12:32, Aurelien Jacobs wrote:
> On Fri, 25 Mar 2005 17:59:10 +0200 (EET)
>
> Matti Hamalainen <mhamalai at ratol.fi> wrote:
> > On Fri, 25 Mar 2005, Diego Biurrun wrote:
> > > On Thu, Mar 24, 2005 at 08:48:55PM -0800, Ryan Altinson wrote:
> > >> Next, I found what might be a violation of the LGPL in
> > >> a program called MemoriesOnTV. I found the libfilefmt
> > >> DLL today when searching my drive for cygwin libraries
> > >> and it contains ffmpeg. I looked for a copy of the
> > >> LGPL, but couldn't find one anywhere in the
> > >> installation.
> > >>
> > >> Also, aren't there GPL'd components in
> > >> ffmpeg that would make this a big violation?
> > >
> > > It depends on how you compile it, by default: no.
> >
> > The interesting file seems to be the already mentioned
> > "libfilefmt-1.0.0.dll". It seems to contain (among others) libpng,
> > libijpeg, etc. linked into it. I extracted the DLL in question
> > by installing MemoriesOnTV via Wine, it is available for the time
> > being at (2.6MB in size):
> >
> > http://www.ratol.fi/~mhamalai/libfilefmt-1.0.0.dll
> >
> > ...
> >
> > Running "strings libfilefmt-1.0.0.dll" reveals some messages
> > that are strikingly similar to ones in ffmpeg and libavcodec.. ;)
> >
> > "ffmpeg_audio_close"
> > "ffmpeg_video_create"
> > "warning: first frame is no keyframe"
> > "releasing zombie picture"
> > "warning, too many bframes in a row"
>
> BTW libfilefmt-1.0.0.dll is not the only file containing the ffmpeg
> string. libmcl-3.0.1b3.dll is upxed, but if you un-upx it
> (upx -d libmcl-3.0.1b3.dll) you can then find similar ffmpeg strings
> in it :
> ffmpeg_audio_set_bitrate
> ffmpeg_audio_close
> ffmpeg_audio_write
> ffmpeg_audio_create
> ffmpeg_video_set_aspect_ratio
> ffmpeg_video_set_bitrate
> ffmpeg_video_close
> ffmpeg_video_write
> ffmpeg_video_create
>
> libmcl is distributed by http://www.gromada.com/ and the mcl archive
> also contain libfilefmt. The readme file clearly state that :
> "MCL is based in part on the work of the following people (...)
> Fabrice Bellard and many others:  FFmpeg (http://ffmpeg.sourceforge.net)"
> But I can't see any reference to the LGPL in their license file nor
> anywhere else.
> So that seems to be a blatant LGPL violation.

did someone contact them and ask them to comply with the LGPL? (reference to 
LGPL, source of the ffmpeg parts they use, object files for relinking, ...)

[...]
-- 
Michael

"nothing is evil in the beginning. Even Sauron was not so." -- Elrond


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