[mythtv] hardware needed to smoothly record a show while watchinganother

Henk Poley mythtv-dev@snowman.net
Fri, 13 Dec 2002 18:10:02 +0100

> Van: Matt Zimmerman <mdz@debian.org>
>> On Fri, Dec 13, 2002 at 03:27:34AM -0800, Bruce Markey wrote:
>>> Henk Poley wrote:
>>> My guess is that you kept the encode-bitrate at the same setting. So
>>> compressor has less work to do in comparison to squeezing 480x480 in
>>> same space (?). Idem with decompression.
>> Good point. Bitrate is a factor. Today I did some new tests
>> with the current CVS and found that decoding CPU usage was
>> very low for each of several resolutions. I used scaled bit
>> rate @ 3300 for all of the test recordings.
> Bitrate does not make a significant difference in CPU utilization in my
> experience.  The size of the captured frames is the largest factor by

Ah well, theory refuted by experience...

btw, it could depend upon quantity/quality of installed memory...

	Henk Poley <><