Re: [GnomeMeeting-list] Netmeeting compatibility

[Damien Sandras <dsandras seconix com>]

Le lun 04/11/2002 à 18:37, Marc Williams a écrit :
> Well, I think I've run into a audio codec compatibility problem between
> GM and Netmeeting.  Perhaps this is well known.  But I certainly didn't
> know about it and I didn't see it addressed in the FAQ except
> indirectly.
> 
> First off, when I (using GM .94.1) connect with NM users who have their
> bandwidth settings at Cable or higher, there is no problem.  But when NM
> users have their bandwidth settings at 28.8, neither of us have audio. 
> The FAQ points out that when neither party has audio, it might be a
> codec compatibility issue.  Ok.  So I have the NM user download and
> install the GSM 6.10 codec available on the GM site.  After the user
> then manually selects this new codec, both of us once again have audio.
> 

Yes, it is what the FAQ tells.

> Evidently, whatever codec NM defaults to for bandwidth settings of Cable
> _is_ built into GM and whetever NM defaults to for the 28.8 bandwidth
> setting is _not_ built into GM.

More or less.

> 
> So my question is this:  Exactly what codec is NM selecting as the
> default for users that choose the 28.8 bandwidth setting and can that be
> built in to GM so that my less clueful friends and relatives using
> dialup don't have to go through the codec download and install process? 

Actually, in GnomeMeeting you can select manually what codecs to use and
in what order of preferences. Netmeeting doesn't directly permit this.
If the Netmeeting user chooses Cable, then I guess all codecs are
allowed, including G.711 which requires much bandwidth. If the
Netmeeting user chooses 28.8k (does it still exist?), then G.711 is
disabled, and only G.723.1 is enabled. G.723.1 is patented and closed
and can't be used in GnomeMeeting except if I pay something like 10 000
USD. So there is no other way than to ask them to install MS-GSM or to
buy a Quicknet card (they have G.723.1 builtin and GM can use it).

Notice that Speex would still be better for people with a simple ppp,
but of course, Netmeeting doesn't support it. That codec problem is not
a GnomeMeeting issue but a typical Netmeeting problem. I hope it helps.


> 
> Thanks!
> 
> 
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