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

[Lorenzo Miniero <lorenzo miniero unina it>]

Matthias Schneider ha scritto:
> 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


Hi all,

I just tried the scenario with a SVN trunk of Asterisk (rev 5157) and 
the window resizing issue doesn't appear, so I guess it's a problem of 
the stable version. I don't know if it's a problem in Ekiga or in Opal, 
since it's Opal which takes care of parsing H.261 streams.

However, by furtherly analyzing the stream I send, I noticed that when I 
encode my composed pictures ffmpeg doesn't provide any frame with a PSC, 
but all GBSC frames, as opposite to Ekiga-stable which always sends 
frames with picture headers. Since the QCIF flag is set in PSC frames, 
might the fact that I only send GBSC frames to confuse the decoder? This 
could explain why when I sent back an Ekiga originated frame before 
sending my mix the resizing issue wouldn't appear: the PSC in the first 
frame would tell Ekiga about the QCIF resolution, which it wouldn't be 
aware of else with only GBSC frames. But if this is a problem (which I'm 
not sure of), why then the SVN Ekiga doesn't suffer from this?

I hope I helped you with this feedback, cheers,

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