Re: [Ekiga-devel-list] Video Codec listing

[Craig Southeren <craigs postincrement com>]

On Mon, 23 Oct 2006 09:39:38 -0700
"Zou, Yixiong" <yixiong zou intel com> wrote:

> 
> 
> >-----Original Message-----
> >From: ekiga-devel-list-bounces gnome org [mailto:ekiga-devel-list-
> >bounces gnome org] On Behalf Of Damien Sandras
> >Sent: Monday, October 23, 2006 1:12 AM
> >To: Ekiga development mailing list
> >Subject: Re: [Ekiga-devel-list] Video Codec listing
> >
> >Le vendredi 20 octobre 2006 à 08:28 -0700, Zou, Yixiong a écrit :
> >> I downloaded the Ekiga from CVS on 10/5 and tried it out.  In addition
> >> to the stock H.261 video codec provided by OPAL, I also have 1 more
> >> H.261 codec that is also installed into the system.  The "codecinfo"
> >> utility in OPAL shows that both plugins are recognized.  But in Ekiga,
> >> if I go to the preference menu, I only see one H.261 codec listed.
> >>
> >
> >I'm sorry, but I don't understand your question.
> >
> >Ekiga displays all codecs that can be used by H.323 and SIP.
> 
> Let me explain, I have two H.261 codecs.  I see them both if I run the "codecinfo" command.  One is the stock H.261 codec provided by OPAL, the other is my own.  "codecinfo" is a utility provided by OPAL, you can find the code here: http://openh323.cvs.sourceforge.net/openh323/opal/samples/opalcodecinfo/
> 
> My problem is if I fire up Ekiga, I only see 1 codec in the video codec preference window, it says "H.261".  Do you see the same behavior?  

It's not possible to have two codecs with exactly the same name. When
this occurs, the plugin manager will choose the one with the more recent
plugin timestamp, or if they are the same, it will randomly choose which
one goes in the list.

Neither H.323 or SIP has the ability to specify multiple codecs of the
same type, so this is not a loss in functionality.

If you want to have multiple codecs that actually use the same algorithm,
then you will need to give them different names in the plugin structures.
This will normally mean one of them will need to be a "non-standard"
codec, because only one of them can have the official IANA RTP name,

   Craig

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