[Live-devel] Jitter value with openRTSP

[ggomand]

Hello Ross,

Thank you for your reply.

I would like to stream another mp4 video file (which has a timestamp 
frequency of 90000Hz) to compare my results but I didn't manage to find 
that kind of files which can be handled by openRTSP (because of video 
codec).

Would you have that kind of file or would you know where I could find one?

Thank you,

Gille


Ross Finlayson wrote:
>> I've seen (thanks to wireshark) in the SDP : "Media Attribute (a): 
>> rtpmap:96 MP4V-ES/5544"
> 
> You don't need to use wireshark to see this - you will also see it in 
> the diagnostic output from "openRTSP".
> 
> Therefore, the server is telling you that the RTP timestamp frequency is 
> 5544.  This is very unusual, because a timestamp frequency of 90000 Hz 
> is recommended, and used by everyone else (for MPEG-4 Video), as far as 
> I know.
> 
>> And my last question:
>> "the value jitter that is given in the stats (QoS stats) is the mean 
>> jitter?"
> 
> It's a weighted average, as described in RFC 3550, section A.8.