Hi,

See bugs 165 and 269 on this. It's as the RFC states: "The use of the 
marker bit is profile specific". Currently the RTP analysis is biased 
towards audio, so video profiles may suffer.

Thanx,
Jaap

Lars Ruoff wrote:
>  From my memories:
> packets with the marker bit set don't take part in the jitter calculation.
> This is because in RTP audio streams marked packets usually mark the end 
> of silence periods.
> The wrong jitter values probably come from the fact that there is no (or 
> at least not the right) sampling clock rate defined for the used payload 
> type.
> Both issues would be worth revisiting.
>  
> Lars
> 
> ------------------------------------------------------------------------
> *From:* [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] *On Behalf Of *Shuaib 
> Siddiqui
> *Sent:* vendredi 6 juillet 2007 16:27
> *To:* wireshark-users@wireshark.org
> *Subject:* [Wireshark-users] RTP Stream Analyses [Marker Bit]
> 
> Hi,
> 
> I streaming videos using VLC on the client side and Darwin Streaming 
> Server on server side. When I analyse the rtp stream on the client side 
> using Wireshark, I see some RTP with marker bit set and immediately 
> after such RTP packet the jitter value is very high as compared to the 
> previous one, plus it also displays Incorrect Timestamp. I looked up the 
> marker bit in the RFC 1889 but they just state it as profile specific. 
> Kindly, can anyone provide any further explanation? Plus does the 
> abnormality in the jitter value means the jitter values further on are 
> not credible ?
> Thank you for yout time!
> 
> Shuaib
> -- 

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