[mythtv] Ticket #6982: FF/Rew speed is way off for HD-PVR recordings

David Engel david at istwok.net
Sat Sep 5 01:55:50 UTC 2009

On Fri, Sep 04, 2009 at 04:15:17PM -0600, Greg Woods wrote:
> On Fri, 2009-09-04 at 21:57 +0000, MythTV wrote:
> > #6982: FF/Rew speed is way off for HD-PVR recordings
> Is there any way this could be responsible for another issue I've
> noticed with HD-PVR recordings, namely jump backs? 

I've seen that problem a couple of times, too.  It's yet another thing
that needs to be looked into.  The large keyframe distance might be a
factor in both problems, but no, I doubt the two are otherwise related.

> To give you an idea of the frequency of this issue, it will occur 2-3
> times during a typical baseball game, which lasts about 3 hours and has
> about 25 short (1.5 minute) commercial breaks.

Hmm, now that you mention it, I think everytime I've seen the problem,
it's also been while watching baseball or auto racing slightly behind
real-time.  Obviously, the HD-PVR hates sports! :)

Are you using VDPAU or software decoding and have you seen the problem
with MPEG2 recordings as well?  I've only seen the problem using VDPAU
on HD-PVR recordings and haven't seen it using software decoding on
MPEG2 recordings.  I'm curious to see/hear if it happens using VDPAU
on MPEG2 recordings.

David Engel
david at istwok.net

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