[asterisk-dev] H.263 Buffer size

Sergio García Murillo Sergio.Garcia at ydilo.com
Wed Jul 19 00:04:03 MST 2006


John Lange wrote:
> On Tue, 2006-07-18 at 08:29 +0200, Sergio García Murillo wrote:
> Now I suppose your point is that in the real world you do have to pay
> attention to MTU when coding RTP because it impacts performance. I
> will grant you that. Its a shame to have to "corrupt" an application
> with issues it shouldn't be concerned with. For one thing if you
> subsequently put it on a properly optimized network (larger MTU) it
> will not perform optimally.     

Yes, everyone can set up a higher MTU in it's lan and build and application that
Uses rtp packets over 1500 size, but I'm almost sure that the wont' be able to 
to talk to any other videophone that's not their own.

> By the way, which phones are you guys using to test video?
I have tested Windows Messenger,Xten, Ericsson's softphone, Sip-comunicator, 
LG and Huaway phones, and many 3G video gateways (probably some others that I don't remmember)
Take into account that even video streaming servers, and encoder don't allow
you use sizes over 1500.

Really, I can't think in any scenario in which using packets over 1500 is a good idea...
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