Hi,

Not going to fly when your video source is a remote video phone - you can only 
decode the frames as they are received.

Also frames can only be encoded at the local end at whatever rate the camera 
supplies them at.

We also have to account for any latency all the buffering causes, playback of 
non real time video material does not care so much about that - I suppose lip 
sync is still important though.

The extra frames didn't make any difference that was worth keeping.

Regards

Phil Q


Phil Quiney, Senior Software Engineer
Trinity Convergence
Cambridge Business Park
Cowley Road
Cambridge CB4 0WZ, UK
T: +44(0)1223-435536
F: +44(0)1223-435560
www.trinityconvergence.com


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vladimir Pantelic
Sent: 17 September 2008 13:25
Cc: [email protected]
Subject: Re: about LCD?

Jaswinder Singh wrote:
> Hello Phil Q,
> 
> On Wed, 2008-09-17 at 12:51 +0100, Phil Quiney wrote:
> 
>> the increase to 10 was just a check to see if frame rate could be improved 
>> by having extra buffers available.
>> 
> 
> How much improvement you find in frame rate with extra buffers ?

ideally, if you have as many buffers as video frames, you can predecode them 
all and then display them at any frame rate. :-)

In a real worlds scenario where the per frame CPU time does not differ much 
from frame to frame, it will help little to have a large number of output 
buffers. In order to gain something, you must be sure that after a period of 
heavy CPU load comes a period of low CPU load that allows you to refill your 
buffer queue. I doubt that this can be met with normal video content. Most 
"high action" scenes will last longer than your buffers anyway.



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