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helmut.kuper at ewetel.de
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 Posted: Tue Jul 28, 2009 11:20 am Post subject: [Freeswitch-users] CELT codec code number |
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Hello,
today I finylly got a working Ekiga Softphone version which is able to
use high quality celt codec with FS 
On my way to get it work with FS I found that Ekiga currently uses codec
code 95 in SDP while FS uses 114. Changing FS to 95 made it works so I'm
now able to listen to my PBX-based MP3-Player on Windows Desktop instead
of using Ubuntu.
veeeeeerrry cool work of FS team !!!!!
Concerning the codec code 95, 114 or whatever I found the link below,
which states that every codec code between 96 and 127 is OK but it seems
they prefer 97 ...
http://tools.ietf.org/html/draft-valin-celt-rtp-profile-02#section-5
You can get windows Ekiga 3.2.5 (with celt 0.5.1) here:
http://wwwuser.gwdg.de/~mrickma/ekiga/ekiga-setup-3.2.5-release.exe
regards
Helmut
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brian at freeswitch.org
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| Posted: Tue Jul 28, 2009 11:31 am Post subject: [Freeswitch-users] CELT codec code number |
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On Jul 28, 2009, at 11:14 AM, Helmut Kuper wrote:
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hello,
today I finylly got a working Ekiga Softphone version which is able to
use high quality celt codec with FS
On my way to get it work with FS I found that Ekiga currently uses codec
code 95 in SDP while FS uses 114. Changing FS to 95 made it works so I'm
now able to listen to my PBX-based MP3-Player on Windows Desktop instead
of using Ubuntu.
|
It should work if they use different codec numbers.... I suspect we are sending on 114 and receiving on 95 which is what should take place. This is one of those areas most people fail to implement properly. We send the remote our RTP map they send us theirs... Can you get a packet capture of this taking place so I can verify who is at fault?
/b
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mike at jerris.com
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| Posted: Tue Jul 28, 2009 12:14 pm Post subject: [Freeswitch-users] CELT codec code number |
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using 95 is wrong. That is not part of the dynamic range for unassigned codecs. This needs to be fixed on their side.
MIke
On Jul 28, 2009, at 12:23 PM, Brian West wrote:
| Quote: |
On Jul 28, 2009, at 11:14 AM, Helmut Kuper wrote:
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hello,
today I finylly got a working Ekiga Softphone version which is able to
use high quality celt codec with FS
On my way to get it work with FS I found that Ekiga currently uses codec
code 95 in SDP while FS uses 114. Changing FS to 95 made it works so I'm
now able to listen to my PBX-based MP3-Player on Windows Desktop instead
of using Ubuntu.
|
It should work if they use different codec numbers.... I suspect we are sending on 114 and receiving on 95 which is what should take place. This is one of those areas most people fail to implement properly. We send the remote our RTP map they send us theirs... Can you get a packet capture of this taking place so I can verify who is at fault?
/b
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brian at freeswitch.org
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| Posted: Tue Jul 28, 2009 12:21 pm Post subject: [Freeswitch-users] CELT codec code number |
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I totally missed this at first... but 95 wouldn't dynamically work
because its not 96-127
/b
On Jul 28, 2009, at 12:06 PM, Michael Jerris wrote:
| Quote: | using 95 is wrong. That is not part of the dynamic range for
unassigned codecs. This needs to be fixed on their side.
MIke
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stkn at freeswitch.org
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| Posted: Tue Jul 28, 2009 5:43 pm Post subject: [Freeswitch-users] CELT codec code number |
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Brian West wrote:
| Quote: | I totally missed this at first... but 95 wouldn't dynamically work
because its not 96-127
/b
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The way to CELT plugin registers should be ok, the code is based on the Speex plugin.
Opal tries to assign a number in the dynamic range first and if nothing is free in that area,
goes backwards starting at 95 to find an empty spot (opal/mediafmt.cxx - OpalMediaFormatInternal::OpalMediaFormatInternal()).
Maybe some of the other codecs is registering a lot of formats without the shared flag set and using up all
dynamic IDs, or there's a problem somewhere in the ID handling code.
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