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

[David Woodfall <dave dawoodfall net>]

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.

> Also, do you use ffmpeg or libav?

ffmpeg. I did try libav just now but Opal wouldn't build against it.

I notice that plugins/video/common/dyna.cxx for example uses
avcodec_open() when since ffmpeg-1.x avcodec_open2() is used. There
are similar problems with avcodec_alloc_context /
avcodec_alloc_context3. This looks like a big upstream mess to me.

I am going to downgrade to ffmpeg 0.11.5 if I can fix the doc bugs.

-Dave