[mythtv-users] Re: Answers about pcHDTV HD-3000 support in Myth, QAM support, and more

[Joseph A. Caputo]

On Tuesday 19 October 2004 15:13, Grant Edwards wrote:
> On Tue, Oct 19, 2004 at 01:54:28PM -0400, David George wrote:
> > Yes, the ATSC stuff is already MPEG2 which is why the card outputs
> > MPEG2 for ATSC.
>
> If the card is outputting MPEG2, why does the web page say that
> it requires so much CPU to use it (1.2+ GHz)? Is doing
> programmed I/O?  I can't believe it's not capable of bus-master
> DMA, but the web page never mentions it.

The CPU requirements are likely to do with the horsepower needed to 
decode the received MPEG-2 stream.  Actually, 1.2GHz is probably quite 
underpowered for HD content.

-JAC