Bug#370599: [Bug 93849] Re: Can't hear audio from 3GP video files: AMR audio support missing in ffmpeg

Andres Mejia mcitadel at gmail.com
Wed May 13 04:03:08 UTC 2009


On Tuesday 12 May 2009 16:45:31 Diego Biurrun wrote:
> On Tue, May 12, 2009 at 04:27:02PM -0400, Andres Mejia wrote:
> > On Tuesday 12 May 2009 16:12:50 Diego Biurrun wrote:
> > > On Tue, May 12, 2009 at 04:04:38PM -0400, Andres Mejia wrote:
> > > > On Tuesday 12 May 2009 06:29:39 Reinhard Tartler wrote:
> > > > > Nicolò Chieffo <nicolo.chieffo at gmail.com> writes:
> > > > > > Read here:
> > > > > > http://blogs.gnome.org/uraeus/2009/05/11/help-for-transmageddon/
> > > > > > It seems that there's a free (apache licenced) amr decoder and
> > > > > > encoder in the android GIT repository.  let's hope it will get
> > > > > > integrated into ffmpeg!
> > > >
> > > > I like this implementation better. I'll look into this instead.
> > >
> > > My favorite is the native FFmpeg implementation that was developed
> > > during Google Summer of Code 2006.  Unfortunately it was never
> > > finished. With a bit of luck it will be finished during this year's
> > > SoC.  Help is very much welcome.
> >
> > Yet another interesting implementation is retrocode.
> > https://sourceforge.net/projects/retrocode/
> >
> > This one is GPL3+.
>
> No, this is not an implementation of AMR, it uses the nonfree libamr.
>
> Diego

Yeah, just realized that.

By the way, PacketVideo was able to obtain permission from 3GPP to use the code 
in the specs under the Apache License. How hard would it be for someone to ask 
3GPP for FFmpeg to use the code under (L)GPL?

-- 
Regards,
Andres
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