[vlc-devel] Re: VLC Stream Forwarding Latency Measurement
braymond at echostorm.net
Wed Feb 7 18:16:20 CET 2007
I understand the concept but you might be better served to look at
the transport since you can get a lot of information regarding
latency at that level if you use RTP/RTCP.
On Feb 6, 2007, at 4:45 PM, Andrzej Palczewski wrote:
> I’m starting a project to measure the latency of a
> video frame when forwarded with VLC. I have three computers:
> Server ---à Video Router --à Client
> The server streams a video to the “video router”, the router then
> receives it and streams it to the monitor and to another client.
> There are two main difficulties:
> Create a data structure to correspond incoming frames to outgoing
> frames in the router. (Create a global frame number)
> Modify the networking source to send that global frame number at
> the start of every packet
> Then, I will be able to intercept that frame number in the kernel
> network code and mark the statistics.
> I’m still getting familiar with the VLC source, would any of you
> guys have some pointers on where in the code I can create and
> implement the global frame number, and where I can modify the
> network code to add the global frame number to packets?
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