Re: [Ekiga-devel-list] Incoming video in Ekiga

[Matthias Schneider <ma30002000 yahoo de>]

Hi Lorenzo,
could you please specify which version of ekgia you are using (SVN trunk, which revision, or ekiga
stable). Also you didnt mention the platform (linux, win32,...)

Thaks in advance,
Matthias

--- Lorenzo Miniero <lorenzo miniero unina it> schrieb:

> Hi all,
> 
> I'm writing this mail and not on -users since I think this will be of 
> more interest to developers than users.
> 
> I'm developing a videomixing application and I'm using Ekiga to test its 
> functionality with H.261. The mixing and composition, both based on 
> libavcodec/libswscale, of more Ekiga video sources works fine (well 
> fine... let's say it somehow works, to be a start), but I noticed a 
> strange behavior when sending the mixed frames back to the Ekigas. All 
> is done on 176x144 frames, which means that each Ekiga sends its own 
> 176x144 frame, and they receive back a 176x144 composed frame containing 
> a mix of all the sources. However, when Ekiga receives the first mixed 
> frame, the video window is resized to 352x288, even if only the top-left 
> part (which is 176x144) is filled with the incoming frames, while the 
> rest of the window remains empty, except for some garbage.
> 
> The strange thing is that, if before sending Ekiga the first mixed 
> frame, I send it back a frame of it's own video, the window is not 
> resized and the mixed video appears in a normal 176x144 window.
> I don't know if it's a bug in Ekiga or if it's what I'm sending that is 
> corrupt, which is why I've written you about it, since I really can't 
> understand what could be wrong.
> 
> I've uploaded an example of what is sent to an Ekiga:
> 
> 	* a Wireshark dump, http://confiance.sf.net/ekiga_wireshark.dump
> 	* and a RTPTools dump, http://confiance.sf.net/ekiga_rtptools.dump
> 
> both about 300k, which I hope can help you riproduce the scenario.
> If you're interested you can use the rtptools dump to see how ffplay 
> instead correctly understands the size of the frames:
> 
> 	rtpplay -s 6666 -f ekiga_rtptools.dump /6668 (sender)
> 	rtpdump -F payload /6668 | ffplay -f h261 - (receiver)
> 
> which of course means nothing, since I just used libavcodec to encode 
> the frames.
> 
> Thanks in advance for any feedback you'll be able to give me, I hope to 
> hear from you soon.
> 
> Regards,
> Lorenzo
> 
> -- 
> Lorenzo Miniero, Junior Researcher
> Dipartimento di Informatica e Sistemistica
> Università degli Studi di Napoli "Federico II"
> Via Claudio 21 -- 80125 Napoli (Italy)
> Phone: +390817683821 - Fax: +390817683816
> Email: lorenzo miniero unina it
> _______________________________________________
> Ekiga-devel-list mailing list
> Ekiga-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/ekiga-devel-list



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