Re: [Ekiga-list] No video with anything other than h261

[David Woodfall <dave dawoodfall net>]

On (24/03/14 11:50), Damien Sandras <dsandras seconix com> put forth the proposition:
> Le 24/03/14 10:11, David Woodfall a écrit :
> > On (24/03/14 09:37), Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr> 
> > put forth the proposition:
> > > On 24/03/14 09:33, Damien Sandras wrote:
> > > > Le 23/03/14 19:13, David Woodfall a écrit :
> > > > > On (23/03/14 17:52), Damien Sandras <dsandras seconix com> put 
> > > > > forth the
> > > > > proposition:
> > > > > > Le 23/03/14 14:37, David Woodfall a écrit :
> > > > > > > > > What Asterisk are you running? Is it a default distro 
> > > > > > > > > like FreePBX? There
> > > > > > > > > are some configs to check, but they are mush easier 
> > > > > > > > > using the freePBX GUI.
> > > > > > > >
> > > > > > > > But apart from my asterisk server I only get video on 
> > > > > > > > ekiga.net's echo
> > > > > > > > tester with h261 too.
> > > > > > >
> > > > > > > If it helps any, these are the output of -d 4. The first 
> > > > > > > is using h261
> > > > > > > and the second is h263. I rang the ekiga.net echo line then hungup
> > > > > > > afterwards:
> > > > > > >
> > > > > > > h261: http://www.r0t.co.uk/paste/p/qJ9yve44.html
> > > > > > > h263: http://www.r0t.co.uk/paste/p/cbgaee38.html
> > > > > >
> > > > > > You should report a bug to your distribution maintainer. 
> > > > > > Things are badly
> > > > > > compiled:
> > > > > >
> > > > > > 2014/03/23 13:31:34.472 0:05.195 Pool:0x7f799496d700 H263+ 
> > > > > > Successfully
> > > > > > loaded 'libavcodec.so.55'
> > > > > >
> > > > > > 2014/03/23 13:31:34.472 0:05.195 Pool:0x7f799496d700 H263+ 
> > > > > > Successfully
> > > > > > loaded 'libavutil.so.52'
> > > > > >
> > > > > > 2014/03/23 13:31:34.472 0:05.195 Pool:0x7f799496d700 H263+ 
> > > > > > Error linking
> > > > > > function avcodec_init, error=/usr/lib64/libavcodec.so.55: 
> > > > > > undefined symbol:
> > > > > > avcodec_init
> > > > > >
> > > > > > 2014/03/23 13:31:34.472 0:05.195 Pool:0x7f799496d700 
> > > > > > H.263-RFC2190 Encoder
> > > > > > closed
> > > > > >
> > > > > > My guess would be that it links to a different libavcodec 
> > > > > > library than the
> > > > > > one whose headers were used to compile things.
> > > > >
> > > > > I've just recompiled both Opal and Ekiga and get the same error.
> > > > >
> > > > > There's no way that it's compiled against a different version. Is
> > > > > there a recommended ffmpeg version to use?
> > > > >
> > > > > Currently, I have version 2.1.4.
> > > > >
> > > > > Have you seen this?:
> > > > > http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2012-April/123454.html
> > > > >
> > > > >
> > > > > I will have to patch Opal by the look of it.
> > > >
> > > > If the compilation succeeded, that means that avcodec_init was 
> > > > present in your
> > > > headers.
> > > > If it fails at runtime, that means that the library you are 
> > > > linking to does not
> > > > contain that method.
> > > >
> > > > => your headers and libraries are different, believe me
> > >
> > > Perhaps you have ffmpeg/libav installed from your distribution, 
> > > and you also installed it manually?  During compilation, one of 
> > > them is used, and during execution the other gets used.
> >
> > Slackware doesn't have ffmpeg in it's stock repo. But like I said I
> > rebuilt both Opal and Ekiga from what I had installed, and there is
> > only one version installed.
>
> Impossible !
> What does :
> grep avcodec_init /usr/ -r
> return ?

It's a bit difficult to do that right now as I'm trying to get Opal to
build against an older ffmpeg-0.11.5.

Although you could try this:

untar opal 3.10.10 source
cd <opal source dir>
grep -r avcodec_open2 *
grep -r avcodec_register_all *
grep -r avcodec_alloc_context3 *


Unless I'm doing something strange, you will find that those functions
are not in latest opal, but they are what ffmpeg seems to have been
using since v1.x or so.

I have picked up some info at various places on the net. Here are some
of those changes:

http://ffmpeg.org/doxygen/1.0/deprecated.html