<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I am finding exactly the same thing.<div>Capture via firewire. HD channels are great.</div><div>SD channels are a bit jitterty and so is the SPDIF audio.</div><div><br class="webkit-block-placeholder"></div><div>Could this be the 8600 Nvidia card? What would a better XvMC card be? 8800? or is the 8XXX series that is not working with XvMC?</div><div><br class="webkit-block-placeholder"></div><div>Now the question. WHY in the world would SD be jittery and HD ( much greater throughput ) is clear and perfect.</div><div><br class="webkit-block-placeholder"></div><div>Ideas? There is really not much in the logs.</div><div><br class="webkit-block-placeholder"></div><div><br><div><div>On 7-Feb-08, at 6:58 AM, Steve Curtis wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">On 06/02/2008, <b class="gmail_sendername">Mark Hutchinson</b> <<a href="mailto:mark@onnow.net">mark@onnow.net</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <br>On 5-Feb-08, at 7:18 PM, Michael Rice wrote:<br><br>> Load "extmod"<br><br>This fixed my HD.<br>Now my SD is still jerky.<br><br></blockquote></div><br>Just FYI - I also built my myth machine with an 8600 and planned on using XvMC. I'm afraid it will never work - the latest Nvidia drivers don't support XvMC with 8xxx cards. If you google around you will find confirmation on the Nvidia site somewhere.<br> <br>I "downgraded" my machine to a 7600 and now XvMC does work. I think I read somewhere that Nvidia have no plans at present to support XvMC in the 8xxx series for the foreseeable future.<br><br>My CPU is an AMD 6400 - I'm connected to a 1080p display, I don't have HD tv tuners so can't comment on MythTV but my mplayer still can't process 1080p. I'm really confused why as my CPU is not topping out when looking at "top" - and I've used all manner of mplayer configurations yet I still get stutter. Something is bottle necking my system - and I just can't figure what/or where it is!<br> <br>Highly frustrating as the picture looks gorgeous - but the slight stutter ruins the overall experience!<br><br>Any thoughts on that much appreciated!<br><br><br><br>--<br>Steve Curtis [<a href="mailto:scurtis@fixation.net">scurtis@fixation.net</a>]<br> Fixation Networks Ltd _______________________________________________<br>mythtv-users mailing list<br><a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users<br></blockquote></div><br></div></body></html>