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Re: [Linphone-users] h.263 and mp4v-es encoding problem

From: Simon Morlat
Subject: Re: [Linphone-users] h.263 and mp4v-es encoding problem
Date: Wed, 14 May 2008 12:40:45 +0200
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The problem is simply that debian purged out h263 and mpeg4 encoders from 
ffmpeg (for patent reasons). The result is that linphone can decode but 
cannot encode video using theses codecs.
The workaround is to remove the libavcodec* debian packages and re-build a 
ffmpeg from source, and install it to /usr


Le Tuesday 15 April 2008 17:18:31 Randall Smith, vous avez écrit :
> I'm trying to get video conferencing working between an ibook g3 running
> Debian Lenny and a Pentium-M machine running Ubuntu Hardy both with the
> default install of Linphone 2.0.1
> The problem seems to be on the Debian side.  When I initiate a
> conference from either end using H263 or MP4V codecs, I get an error
> message like this from Debian's Linphone:
> ortp-error-could not find encoder for codec id 5
> On the Debian side, the video displays both local and remote.  On the
> Ubuntu side, I'm only seeing local video.
> Video works with theora and snow codecs, but it's way too CPU intensive
> to be useful.  Because these work, I suspected is was a Debian stay away
> from patents deal and installed packages from debian-multimedia
> (libavcodec and friends), but that didn't help.  The libavcodec package
> from debian-multimedia does not replace the one in Lenny main.
> BTW, I upgraded the Debian side to unstable, Linphone 2.1 with new
> libavcodec and it still has the same problem.
> Any idea on how I can get this working?
> Randall
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