[mythtv-users] CPU Performance required three dumb capture cards

[Shay - MythTV]

I have 2 pvr250's running on a 1.33mhz AMD system without any cpu 
problems..  just have mythtv transcode them to mpeg4's after recording if 
you're worried about space.

-Shay

At 10:59 AM 3/26/2004, you wrote:
>If you dont mind recording in mpeg 2 I would get a pvr-x50 or a m179. I 
>would think with that setup that it could do that much no problem. I have 
>been going to stick an old card in with my pvr-250 and see what happens. I 
>only have a athlon 1200 with 256 megs of ram. I would rather have the 
>capture card doing all the work and having it use more disk space. Jamison
> >
> > From: Adam Felson <a.f.5 at pobox.com>
> > Date: 2004/03/26 Fri AM 10:34:12 CST
> > To: mythtv-users at mythtv.org
> > Subject: [mythtv-users] CPU Performance required three dumb capture cards
> >
> > My multimedia computer's hardware is an asus a7v333, an athlon XP 2400,
> > and 512MB DDR 3200 memory.
> >
> > When I had one video capture card (BT848), it ran like a champ able to
> > do 640x480 mpeg4 encoding and tv output in real time with about 55% cpu
> > load.
> > With two cards (second is a bt878), it maxes out the CPU and can't keep
> > up;  tv out will run with a 1/2 second pause every 4 seconds.
> >
> > Right now I've got it set to encode using rjpeg at 480x480 resolution.
> > It is set to "transcode after recording" and the transcode profile is
> > set to do mpeg4.  Is that how to set it up?  I have the
> > default/tv/highq/lowq profiles set to do rjpeg and the transcode profile
> > set to do mpeg4.  It seems to be mostly working although the system now
> > crashes a lot -- it can only go about day between crashes.  Crashes are
> > weird -- video stays up (audio will go in a loop), keyboard flashes and
> > nothing ever gets written to a log file.
> >
> > This morning I tried to watch a previously recorded show while two
> > channels were being recorded.  Mythtv couldn't keep up.
> >
> > Sheesh:  I want to network this thing and be able to capture two
> > programs while watching a third.  It doesn't look like the fastest cpu
> > that I can put on that motherboard (athlon xp3200,333mhz fsb) will be
> > able to keep up.  My wife will kill me if I try to justify having two
> > servers.
> >
> > --
> > Adam Felson <a.f.5 at pobox.com>
> >
> >
> >
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