[mythtv-users] Last few problems - playback consistency, auto-shutdown questions, live firewire

[Yan-Fa Li]

On 3/4/07, Chris Weiland <hobbiticus at gmail.com> wrote:
> So, I got my hardware for my dedicated myth box and I'm just about done
> setting it up.  However, I've run into a few snags that I can't figure out
> yet.
>
> 1) When watching HD content, sometimes the video will speed up suddenly for
> up to 30 seconds, leaving the audio out of sync.  After a few more seconds,
> the video will slow down for about the same amount of time until the audio
> finally syncs back up.  This is sometimes accompanied by the audio speeding
> up while catching up.  I havn't a clue as to what is causing this.
>
> I thought it was due to excessive CPU usage by xorg.  Like some other users,
> my xorg usage was through the roof while watching anything, which was fixed
> by setting the "UseEvents" option to "True" in my xorg.conf.  This seems to
> have made the problem occur less often, but it definitely still happens.  I
> also don't see any correlation to spikes in CPU usage.  This is definitely
> not an artifact from the broadcaster because I can rewind to the
> "problematic" area and view it normally.
>

Try turning off OpenGL video sync.  When I did that my problems went away.