[Asterisk-video] announcing bandwidth in SDP

[Klaus Darilion]

Part 2: Attached is the patch for chan_sip if someone wants to try it.

You can specify the bandwidth with
   maxcallbitrate_h263p=value
where value is the bandwidth in kbit/s. Note: this only works in the 
global section. value=80 is a good value for H324M calls.

The added SDP line will be:
a=fmtp:103 QCIF=1 MaxBR=value0
(maxbr is bit/100s)

If 0 then no SDP line will be added.

regards
klaus

Sergio Garcia Murillo schrieb:
> Great, but does EyeBeam comfom the strictly the traffic to the desired bandwith??
> 
> I'll be very interested in knowing the results, if you got a video recorded that way send it to me, I'll try to take a look at the video stream to see how "good" it's for directly using it with the videocall.
> 
> Best regards
> Sergio
> 
> ----- Original Message -----
> From: Klaus Darilion [mailto:klaus.mailinglists at pernau.at]
> To: asterisk-video at lists.digium.com
> Sent: Thu, 17 Jan 2008 12:17:35 +0100
> Subject: Re: [Asterisk-video] announcing bandwidth in SDP
> 
> Klaus Darilion schrieb:
>> Hi!
>>
>> Is there an Asterisk version (trunk, videocaps branch ...) which allows 
>> to signal the maximum video bandwidth (e.g. b= or a=fmtp:...MaxBR=)
> 
> 
> Answering myself: there is maxcallbitrate in sip.conf. It adds b=CS: to 
> global section of SDP.
> 
> Looks like it is ignored by eyebeam, which uses MaxBr setting in a=ftmp 
> line which was defined in a rather old SDP draft.
> 
> regards
> klaus
> 
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