Re: [Ekiga-list] How can I get non-free video codecs. ekiga 3.2.7 ubuntu 10.10

[Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>]

On 08/03/11 07:08, Gerhard Stengel wrote:
> Am Donnerstag, 13. Januar 2011, 21:58:50 schrieb Eugen Dedu:
> > > > Also, because for these non-free codecs you need tom compile ffmpeg
> > > > yourself, because distributions strip them out.
> > > >
> > > > Finally, because h263-1998 crashes when using ffmpeg last version, see
> > > > bugzilla again (bug for H263); however, if you choose a repository for
> > > > ffmpeg of about 1.5 years ago, it should work, see the same bug report.
> >
> > https://bugzilla.gnome.org/show_bug.cgi?id=606265  I forgot to say that
> > h263 does not crash for me if I compile ffmpeg with some option, see the
> > upstream bug specified in the bug above.  I think this is the best
> > option for you, instead of compiling an older ffmpeg.
> Hi,
>
> Compiling ffmpeg with some extra options sounds like an interesting track to work around the h263 crash problem.
> However, with the recent ffmpeg opal 3.6.8 refuses to build H263/H263-1998 and H264. This is some output from the
> configure run:
>
> checking for LIBAVCODEC... yes
> configure: libavcodec stack align hack disabled
> checking for h263p_encoder in -lavcodec... no
> checking for mpeg4_encoder in -lavcodec... no
> checking for h264_decoder in -lavcodec... no
> checking libavcodec/avcodec.h usability... yes
> checking libavcodec/avcodec.h presence... yes
> checking for libavcodec/avcodec.h... yes
> checking libavcodec source... disabled
> checking if libavcodec has rtp_mode... no
> checking for X264... yes
> checking filename of libx264 library... libx264.so.114
> configure: x264 static linking disabled
> checking for THEORA... yes
> checking for CELT... no
> checking dlfcn.h usability... yes
> checking dlfcn.h presence... yes
> checking for dlfcn.h... yes
> checking if dlopen is available... yes
> checking for dlopen in -ldl... yes
> configure: h264 support disabled due to disabled dependency HAVE_H264_DECODER
> checking enable H.264 support... no
>
> I installed a really recent version of libavcodec, 0.6.201102261447git from packman. Any idea what's going wrong?
>
> ffmpeg -codecs delivers following output about the interestin codecs:
>   DEV D  h261            H.261
>   DEVSDT h263            H.263 / H.263-1996
>   D VSD  h263i           Intel H.263
>    EV    h263p           H.263+ / H.263-1998 / H.263 version 2
>   D V D  h264            H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
>   D V D  h264_vdpau      H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)
> so they basically seem to be supported.

I have to check, but I am pretty sure that this is not sufficient.  You 
need very probably both E and D for a codec.  Moreover, if you use 
original libavcodec from ubuntu, it is not sufficient.  You need to 
install ffmpeg library yourself, as shown at 
http://wiki.ekiga.org/index.php/Compiling_Ekiga#Additional_dependencies_of_specific_video_codecs 
(even if a bit old I think, since ffmpeg uses git now, I need to update it).

--
Eugen