Hi Dierk, Am So, den 29.02.2004 schrieb Dierk Brunner um 20:38: > Am Sonntag, 29. Februar 2004 14.29 schrieb Kilian Krause: > > > Then I switched to GnomeMeeting under Suse Linux 9.0. I could not get > > > a voice connection working using these two codecs (GSM and Speex). > > > > Speex for Win32 is ACM and currently has no MS-Speex in OpenH323 as > > equivalent. The Speex from GnomeMeeting doesn't get encoded as WAV > > header and therefore cannot be used with NetMeeting. > > Is it possible to somehow get "compatible" Speex codex that work with > GnomeMeeting and with NetMeeting? that's being worked on in openh323. it'll not be public before the next release of openh323 though. That's gonna be fixed with the software codec plugins system Craig has laid out. For now we gotta wait, as there's no patch to openh323 (to my knowledge) that would add the MS-Speex option. > What exactly is the difference between an ACM and OpenH323 codex? > Only some bytes in the header? How can I make them "compatible"? If you want to compare the difference, check the GSM-06.10 against MS-GSM (both from OpenH323) and see for yourself which parts differ. > > Be sure to "Reorder" your codecs so that the MS-GSM is on top of the > > list for NetMeeting, then you should be able to select "MS-GSM" for > > GnomeMeeting and "GSM-06.10" for NetMeeting (given that MS-GSM is above > > G711 priority in GnomeMeeting too) > > MS-GSM works, but the voice quality is very bad compared to Speex 8 kBit/s, > so I still try to get Speex interoperating on both platforms. MS-GSM isn't bad by design, but usually by config. Make sure to set the jitter buffer to high and enhance your parameters for network throughput. Generally a low latency should do ok with MS-GSM. (though not excellent for some people) -- Best regards, Kilian
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