[mythtv] Is there a magic resolution for recording ?
Christopher Mind
mythtv-dev@snowman.net
Sat, 14 Dec 2002 01:25:23 +0000
I am trying to tweak mythtv for my P3 1 Ghz machine. I am using MPEG4 as
RTjpeg quality was poor on my system. I have 700 plus MB memory, an ATI TV
wonder PCI card, Turtle Beach Santa Cruz, 100 Gig Hd, Nvidia Geforce Ti200
with TV out running Linux Mandrake 9 via TV out with a resolution of
640x480. Also using WindowMaker (which seems to work best the irxevent which
gets confused with KDE) and Creative Infra Remote.
So far I found that 640 x 480 is very very choppy at 1800 data rate or
above.
400 x 300 with 2000 data rate seems to be ok for recording only. When I
attempt to playback a recording at the same time that the machine is
encoding, the program that is being encoded gets a little choppy. 352 x
300 seems to be fine but is a tad blurry at 2000 data rate. Does the cpu
utilization scale with the resolution or data rate or are there optimal
resolutions which will always result in less cpu utilization. I am not even
aware of what other resolutions are possible. Also does lowering the mp3
quality reduce cpu utilization? I am using Maxquality 2, Minquality 15 and
3 for quality difference. Thanks
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