[mythtv-users] 0.19, XvMC, and Prebuffer pause

[Todd Ignasiak]

On 3/5/06, Brian Foddy <bfoddy at visi.com> wrote:

> When I upgraded to 0.19 I immediately noticed a form of the streams of
> NVP prebuffering pauses, sometimes into an infinite loop, until pressing
> another FF or RR keystroke.  It also seems worse when the playback hits
> a commercial skip so it jumps many minutes.  Again, hitting RR 15 seconds
> brings it back out.  And there can be several seconds of horrible A/V sync
> after a FF also, when more prebuffer errors occur.  During stable playback
> there are generally no problems.


This sounds like what I'm seeing.  XvMC can work fine for a while, then the
video will stop, and all the NVP prebuffer pause messages will be scrolling
on the terminal window.  If I hit pause, it will work itself out.  But, it's
stuck until I do that.

The most interesting thing to me however, is before upgrading to 0.19,
> I was using a Jan 21, 2006 SVN snap, and it was the most stable XvMC
> playback I've ever seen in Mythtv.  FF/RR would result in near perfect
> A/V sync right away, and very few prebuffer pauses, certainly no hangs.


Same here.  I used many SVN versions leading up to 0.19,  some would be
unstable, but others were very stable.  Leading up to the 0.19 release, the
XvMC was very stable.
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