[mpls-linux-general] Re: [ippm] Measure the delay jitter of video stream over MPLS network?

[Jizhong (J. W. <ji...@cs...>]

Hi James,

What's the transport protocol you used? If you use RTP, the 'time stamp'
may be helpful.

Jim

Jing Shen wrote:

> Hi:
>
> Execuse me for my stupid question, but I really need help
> on this question.
>
> I've just setup a little test bed with MPLS & QoS enabled.
> I want to measure the effect of QoS enabled MPLS channel
> on video streams. I hope the test should be as simple as possible.
>
> I've download a little tool named mpeg_video
> which is a mpeg-1 decoder. I place the mpeg-1 files
> on one end of the testbed(linux)  and mpeg-1 decoder on the other
> end ( Solaris box). The decoder use NFS to fetch the content to play.
> After reading the source code of the mpeg-1 decoder I find I
> can just record the start and stop time of each frame, while I want to
> measure the delay and delay jitter of each stream. And, I don't know if
> there
> is a free tool  can be used to generate a  graph of jitter-frame
> relationship
> from raw data.
>
> Is there any person would like to do me a favor on this question?
>
> Thanks a lot .
>
> Regards
>
> James Shen
>
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Jim Wu                                 ji...@cs...
School of Computer Sci. & Eng.         FAX:   +61 2 9385 5995
The University of New South Wales      Tel:   +61 2 9385 4358
UNSW SYDNEY, NSW 2052                  http://www.cse.unsw.edu.au/~jimw
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