I hadn't updated my SVN version in a few weeks, and had turned off XvMC because of a few glitches. So, I updated it yesterday and turned XvMC back on. My initial tests were excellent, very good XvMC playback, no stuttering, perfect playback on 1080i and 720p material. (In the past, I had been getting some stuttering on 720p when the OSD came up).
<br><br>Maybe some of the changes that Kevin mentioned have helped this.. My system is: Gentoo x86-64, kernel 2.6.14, NVidia driver 7676, FX5200 video card, latest MythTV svn as of last night, HD3000 and FusionHDTV3 QAM cards.
<br><br><div><span class="gmail_quote">On 1/15/06, <b class="gmail_sendername">Jerry Rubinow</b> <<a href="mailto:jerrymr@gmail.com">jerrymr@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;">
On 1/15/06, Matt <<a href="mailto:skd5aner@gmail.com">skd5aner@gmail.com</a>> wrote:<br>> On 1/15/06, Kevin Kuphal <<a href="mailto:kuphal@dls.net">kuphal@dls.net</a>> wrote:<br>> > Kevin Kuphal wrote:
<br>> > > I'm working on testing some XvMC support for my GeForce MX 440 card in<br>> > > anticipation of trying HD recording and playback and I've built my<br>> > > master backend frontend with XvMC and OpenGL Vsync now and I'm trying to
<br>> > > playback some MPEG-2 content which normally plays back just fine on this<br>> > > system without XvMC but I'm getting very studdery playback.<br>> > ><br>> > Just an update. I updated to the latest SVN and the segfault is gone
<br>> > and I get solid XvMC playback with or without OpenGL Vsync. Thanks for<br>> > bearing with me. I wonder if I was hitting that XvMC segfault that<br>> > Daniel fixed. Either way it works. Now I need to wrestle with whether
<br>> > or not to pick up an Avermedia HDTV tuner to pull the QAM stations off<br>> > my cable provider. So tempting with the "big football game coming" :)<br>> ><br>> > Kevin<br>><br>
> Kevin,<br>><br>> Thanks for posting this info. I've never been able to get XvMC to<br>> play without studdering, and that's with NTSC standard def. I haven't<br>> tried it in a long time, but when I get a chance, I'll try again with
<br>> latest SVN and let you know how it works for me.<br>><br>> Thanks!<br>> Matt<br><br>Matt,<br><br>Today I finally got XvMC playback working, after trying lots of<br>different settings, drivers, etc. What finally got rid of stuttering
<br>and slow playback for me was increasing the ringbuffer size. My<br>symptoms in the log were lots of "prebuffer pause" and "video ahead of<br>audio" messages (so probably not the same thing as Kevin's problem).
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