[mythtv-users] HD on SDTV playback question

Steven Adeff adeffs.mythtv at gmail.com
Sun Feb 25 19:18:34 UTC 2007

On 2/25/07, Kevin Kuphal <kuphal at dls.net> wrote:
> Steven Adeff wrote:
> > On 2/25/07, Paul Bender <pebender at san.rr.com> wrote:
> >> jason maxwell wrote:
> >>> I am about to order my HDHomerun and have a question, but
> >>> silicondust.com seems to be down at the moment.
> >>> I have one HDTV in the house that will be attached to a myth
> >>> frontend/backend that can play back HD content. I would like the
> >>> option of watching recorded HD shows on other TVs in the house as
> >>> well. Will I need very powerful frontends on the other TVs to play
> >>> recorded shows, or will an average system be adequate, since i don't
> >>> need to output the full resolution?
> >>> thanks,
> >>>
> >> Most of the frontend's power is used to decode the video. Therefore, the
> >> power needed depends on the resolution of the content much more than the
> >> resolution of the display. Of course, by today's standards, a below
> >> average computer system can decode and display HDTV.
> >>
> >
> > If the other frontends have an FX5200 or better you can use XvMC to do
> > the decoding if the CPU isn't fast enough.
> >
> >
> I seem to be agreeing with Steve alot today.  I have this scenario.
> Main frontend is P4 3.2ghz that does HD decoding. Backup frontend
> downstairs is an Athlon 1800 with GeForce MX440 that does HD decoding
> with XvMC

Kevin, are you able to get good 1080i playback with the MX440? I've
got an AthlonXP 1600 with a FX5200 and I float around 95% cpu use with
1080i and Bob enabled. Just curious,  I thought the MX440 didn't
provide as much offload with XvMC?

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