Scalable video coding for H264 is a pretty new area. I'm not aware of a working open source implementation. There's <a href="http://sourceforge.net/projects/opensvcdecoder/">http://sourceforge.net/projects/opensvcdecoder/</a> addressing the decoder, and there had been some discussions on the ffmpeg mailing list. But I haven't checked the latest status for a while. Indeed, Google Gtalk provides a proprietary implementation licensed from Vidyo for free (!!!), which is key for Gtalk video chat quality on windows. Now, since a FOSS implementation of H264/SVC (required in Gstreamer) is not visible on the horizon, we can only pray and wait for a linux version of the gtalk plugin. Toby <div class="gmail_quote">On Fri, Oct 1, 2010 at 11:07 AM, Yann <<a href="mailto:yannubuntu@gmail.com">yannubuntu@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Dear all, I observe that I get better audio/video results with Gtalk plugin than with Empathy 2.30.2 (on Lucid) Someone told me that it may be because Gtalk uses H264 SVC, and not Empathy. As it is a norm, it could be possible to implement it in Telepathy, isn't it ? Is it planned or started or maybe already done ? Regards Yann _______________________________________________ telepathy mailing list <a href="mailto:telepathy@lists.freedesktop.org">telepathy@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/telepathy" target="_blank">http://lists.freedesktop.org/mailman/listinfo/telepathy</a> </blockquote></div>