[Mplayer-users] DVR box - how much CPU
steve at daviesfam.org
Mon Apr 30 14:36:02 CEST 2001
I'm starting to build my digital video recorder / dvd playback box.
Its been a while since I built my current PC and there's a lot of new
stuff out there.
I'm hoping to be able to capture and play video at the same time. I
expect to need a Kfir card for hardware mpeg encoding for capture (though
I'd be pleasantly suprised if its not needed), but I haven't decided
whether to use a hardware mpeg decoder.
If I can do without a mpeg playback card, I'll use an XVideo supporting
video card, with rgb output to my TV. A composite video output would be a
bonus. Matrox card looks like a good choice with special support in
But with all this I don't want a box which needs heaps of whirring fans to
keep it running. Looks like could easily end up with PSU and case fan,
chipset, processor and graphics chip fans... ! Be a shame if the movie
was drowned out by the noise of the box playing it.
Does anyone have any experience, suggestions or insight?
How much cpu power will I need to do DVD playback at say 30-40% CPU
usage with the current mplayer?
How important is cpu power relative to bus speeds, memory speeds?
Should I consider a dual processor system?
Can I underclock and lower cpu voltages to reduce heat and eliminate fans?
Sources of quiet fans?
Which chipset/processor puts out least heat for the performance?
Should I rather drop back the CPU power drastically and include a
hardware mpeg2 decoder? (But then, what about non-mpeg2 video output?)
All these questions - you can tell I'm rather overwhelmed. I this stuff
discussed somewhere already?
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