[mythtv-users] Problems with mythtv and Radeon HD video cards

Jay Summet jay at summet.com
Sat May 3 12:55:52 UTC 2008

> I am trying to get mythtv working in combination with an ATI Radeon HD 
> video card, without much luck. The card is an Asus Radeon PRO 
> 2600/HTDI/256M, and I'm using the open-source radeonhd driver. 

I'm afraid this may not be a lot of help:  Without hardware acceleration
you will need a beast of a machine to play HD content at good resolutions.

I build a MythTV box using an ATI card and could never get XVMC working
with it (My 3.2Mhz CPU  was near 90-100% utilization all the time when
playing MPEG2 (HD) streams on a 1024x768 resolution display, and the
video would stutter any time any other process on the BE/FE did some work.)

My eventual solution was to buy a cheap (30$) nVidia card and use it to
replace the ATI card (also a $30 investment).  The extra $30 I spent was
WELL worth it.  XVMC worked as soon as I installed the nvidia restricted
drivers and my CPU usage at 1368x768 with 720p content is now around 10-20%.

Yes, I'd prefer to use all open source drivers myself, but without
hardware video/mpeg2 acceleration, mythtv at HD just doesn't work.


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