Just out of curiosity...when you say 65-75% CPU utilization, how is that partitioned between the X server and the frontend? I ask because if I try and watch without XvMC on my system, the X server is something like 30% and the frontend is like 70%. I'm wondering if this load on the X server can be avoided somehow. Then I might have a chance to watch HD natively.
<br><br>It seems crazy to me that with such fast CPUs, HD playback is not a given. My Windows machine (2.4GHz P4) can process HD streams from my HDHomerun without a hiccup?!? Why should a 2.8 GHz (granted, it is a Celeron) have so much trouble?!?
<br><br>--<br>Mike<br><br><div><span class="gmail_quote">On 11/21/06, <b class="gmail_sendername">Mark Chang</b> <<a href="mailto:mark.chang@gmail.com">mark.chang@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Just wanted to drop in a few data points to the list. You've all been<br>so helpful, so here is something for the archives in case someone else<br>is trying to build a cheap HD box.<br><br>Trying to do HD frontend/backend on an Athlon64 3200+ with an Nvidia
<br>6200TC. Using stock, binary, Ubuntu Edgy installs, and an HDHomeRun.<br>This seems to be enough horsepower to decode all varieties of OTA<br>*without* XvMC if I only use Linear Blend. Bob and Kernel caused<br>stuttering. XvMC did nothing better, and it was perhaps even worse. I
<br>was happy.<br><br>Then I saw the XvMC portion of the wiki:<br><a href="http://www.mythtv.org/wiki/index.php/XvMC#Tips_and_Tricks">http://www.mythtv.org/wiki/index.php/XvMC#Tips_and_Tricks</a><br><br>I turned off Sync to VBlank using nvidia-settings and voila, I can use
<br>Bob and Kernel without XvMC. I am now happier! XvMC does NOT seem to<br>lower my CPU usage, however. I am seeing 65%-75% decoding high-bitrate<br>HD (7gb/hr) without XvMC and WITH Bob 2x.<br><br>There. That's my two cents.
<br><br>--<br>Mark L. Chang<br>_______________________________________________<br>mythtv-users mailing list<br><a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br><a href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users">
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br></blockquote></div><br>