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From Arthur Chen <zijian.p...@gmail.com>
Subject Re: [libav-user] License of libavcodec and libavformat
Date Mon, 10 Aug 2009 06:24:09 GMT
Hi Luciano Resende,

As to the License of libavcodec and libavformat we used in Realclass, we are
clear now. FFmpeg support a configure option to disable GPL code and enable
LGPLed  libavcodec and libavformat.

regards,
Arthur
2009/7/27 Luciano Resende <luckbr1975@gmail.com>

>  On Sun, Jul 26, 2009 at 7:59 PM, Arthur Chen<zijian.ping@gmail.com>
> wrote:
> > ---------- Forwarded message ----------
> > From: d3fault <d3faultdotxbe@gmail.com>
> > Date: 2009/7/27
> > Subject: Re: [libav-user] License of libavcodec and libavformat
> > To: Libav* user questions and discussions <libav-user@mplayerhq.hu>
> >
> >
> >  On Sun, Jul 26, 2009 at 7:12 PM, Arthur Chen <zijian.ping@gmail.com>
> wrote:
> >
> >> Hi all,
> >>    I am using the libavcodec and libavformat to develop an e-learning
> >> project. The project request all library which we used in it be under
> > LGPL.
> >> I know that FFmpeg is licensed under the LGPL version 2.1 or later.
> >> However,
> >> FFmpeg incorporates several optional modules that are covered by the GPL
> >> version 2 or later, notably libpostproc and libswscale.
> >>    But I don't know the License of libavcodec and libavformat....
> >>
> >> regards,
> >> Arthur
> >
> >
> > libavcodec and libavformat are both LGPL, but if the library you use with
> > your app was compiled to use libpostproc and/or libswscale (most likely
> it
> > was unless you compiled it yourself), then you can't redistribute those
> > binaries unless you comply to the terms of the GPL and release your
> source
> > code too. If you don't need libswscale or libpostproc, you should look
> into
> > compiling your own libraries in LGPL mode. It's something along the lines
> of
> > --enable-lgpl and --disable-gpl as arguments for your ./configure
> >
> > ./configure --help should get you started
> >
> >
>
> In this case, who would release the LGPL build of the required ffmpeg
> libraries ?
>
> --
> Luciano Resende
> Apache Tuscany, Apache PhotArk
> http://people.apache.org/~lresende
> http://lresende.blogspot.com/
>

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