[mythtv-users] What's the practical limit on capture cards?

David Brodbeck gull at gull.us
Tue Mar 25 05:55:34 UTC 2008


Roger Heflin wrote:
> If they don't have HW encoders (or receive already encoded mpeg2 streams) you 
> will run out of cpu with a lot fewer cards.

The limit on one dual-Xeon machine I played with was somewhere between
four and six.  This was with PCTV Pro frame-grabber cards.  It worked
great with four, but with six it became unstable and the system clock
became wildly inaccurate due to dropped interrupts.




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