On 12/11/05, Raphael Pooser <[EMAIL PROTECTED]> wrote:
> I've noticed relatively high processor usage by xorg when playing back
> previously recorded video.  To play back a 480x480 resolution rtjpeg
> recording, xorg take 40% processor time.  To play back a 384x480 video
> it takes about 33%.  This is on top of the normal usage by
> mythfrontend.  Mythfrontend takes about 13% to play back the recording.
> Mythbackend takes about 35-30% to record a 480x480 stream.  It seems to
> me, it should take a lot more power to record something using software
> encoding like I am than to actually play it back.  I must be missing
> hardware acceleration for the video playback, I'm guessing.  I'm using a
> radeon9600pro with the vga hooked directly up to the vga input of an lcd
> TV.  So the TV is acting like a monitor.  Thing is, I have the
> proprietary ATI fglrz drivers installed.  But since I'm not really using
> any of the functions of this driver, like opengl or TVout, maybe there
> is a better driver I could install that could accelerate this 2D
> video.... Anyone know what a normal amount for xorg to be using during
> playback is, and if mine is abnormally high what are some methods I can
> use to get that back down to a manageable 10-15%?

Raphael,

I use the fglrx drivers on my frontend system (2GHz Celeron, Radeon
9100IGP) and when just testing, got 3-4% X usage and 13% mythfrontend
usage whilst playing back a 720x576 MPEG2 recording.

First thing is to make sure you have xv working (type 'xvinfo' at the
prompt and check the output). The MPEG4 codecs require more CPU power
to decode than MPEG2 which is how they offer better compression
ratios.

Nick
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