On Jan 30, 2008 12:01 PM, Scott D. Davilla <<a href="mailto:davilla@4pi.com">davilla@4pi.com</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">>I'm looking at getting a HDHomeRun box to get local ATSC channels in<br>>better quality, however, my TV is currently setup as a 720x420p<br>>monitor over DVI. Is it going to be harder on my system to down<br>
>scale the video and play at 420p or just straight out decode and<br>>play at 1080i?<br>><br><br></div>My experience is the scaling to the display size is nothing compared<br>to the actual mepg2 decode. I see no difference in cpu usage when<br>
displaying 1080i mpeg2 HD content on 480i, 480p, 720p or 1080i<br>display sizes. This is also 1080i content from a HDHomeRun using<br>local of-the-air ATSC channels.<br><br>Get your xvmc working first (if glxgears does not work, nothing else<br>
will ether), then turn to getting your mythfrontend configured.<br></blockquote></div><br>I got glxgears working and it was getting over 600 fps which seemed to be about right for my Geforce4 4000, however, when I tried to play MPEG2 content (DVD or DVD as .iso) the video in xine or mythtv became very choppy and xine complained about dropping frames. <br>
<br>What would cause xvmc to have worse performance than without?<br><br>Richard<br>