Re: Incoming video in Ekiga

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.minierounina.it
_______________________________________________
Ekiga-devel-list mailing list
Ekiga-devel-listgnome.org
http://mail.gnome.org/mailman/listinfo/ekiga-devel-list

Hi Lorenzo,

there have been many changes in both OPAL and ekiga since
the last stable release. OPAL makes now
use of a plugin system for video codecs, and the output
routines of ekiga have been completely
rewritten. I am not really an expert on H.261, so I dont
know whether this is a problem of ekiga
or opal, but concerning that this happens only on a very
special occasion and that it does not
happen in the future 3.00 release I dont think it would be
worth the effort looking deeper into
this issue... 

Matthias


--- Lorenzo Miniero <lorenzo.minierounina.it> schrieb:

> 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.minierounina.it
> _______________________________________________
> Ekiga-devel-list mailing list
> Ekiga-devel-listgnome.org
> http://mail.gnome.org/mailman/listinfo/ekiga-devel-list
> 



      Heute schon einen Blick in die Zukunft von E-Mails
wagen? Versuchen Sie´s mit dem neuen Yahoo! Mail.
www.yahoo.de/mail
_______________________________________________
Ekiga-devel-list mailing list
Ekiga-devel-listgnome.org
http://mail.gnome.org/mailman/listinfo/ekiga-devel-list