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

Greg Woods greg at gregandeva.net
Sat Sep 5 05:11:40 UTC 2009

On Fri, 2009-09-04 at 20:55 -0500, David Engel wrote:
> 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? 

> 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! :)

It's probably because sports is one thing you can't just watch the next
day, because you'll know how the game turned out. So sports is something
I typically watch while it's still recording, with only an hour or so
time delay.

> Are you using VDPAU or software decoding

VDPAU, with a GeForce 9500GT.

>  and have you seen the problem
> with MPEG2 recordings as well?

Like the ones from my HD Homerun? No. But then I hardly ever record
anything off the HDHomerun during the summer. Once football season
cranks up, I'll record more from the broadcast networks that are
available to my HDHomerun and I'll be able to be more sure about that.

I can say that I have not seen this at all with the SD recordings coming
off the PVR-500 (which are also MPEG but I display everything using
VDPAU) and there are a lot of things I have recorded that way.

> I'm curious to see/hear if it happens using VDPAU
> on MPEG2 recordings.

I'll let you know next week about MPEG HD.

I am happy (for me, not for you )-: that finally someone else has
acknowledged seeing this problem. I have mentioned it a few times on the
users list and gotten zero response, so I was beginning to think there
was just something mysteriously wrong with my system. I first noticed it
during the Stanley Cup playoffs last spring, when I first started
running trunk and using an HD-PVR, so it's been with me from the very


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