[mythtv-users] Playback problem -- random short pauses

Kenneth Emerson kenneth.emerson at gmail.com
Mon Apr 18 03:43:57 UTC 2011


On Sun, Apr 17, 2011 at 4:03 PM, Tom Lichti <redpepperracing at gmail.com>wrote:

> - if you have your backend storage directory nfs mounted on your
> remote frontend, try unmounting it to force the backend to stream it.
> Since I have done that, I have not see one hiccup (aside from when the
> OSD is present, but I can live with that). When there were hiccups,
> they would show as a series of these messages in the frontend log:
>
> 2011-04-17 16:34:58.674 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:58.683 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:58.692 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:58.809 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:58.818 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:59.059 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
> 2011-04-17 16:34:59.068 Player(0): Waited 100ms for video frames from
> decoder AAAAAAAAAAAAAAAAA
>
> I know, it's probably obvious to everyone else, but if it helps
> someone else, great!\
>
> Certainly not obvious to me.  IIRC, there have been several threads over
the past two years discussing different switches to use when using
nfs-mounted file systems for recordings.  A search of the archives can
probably locate them; however, nfs isn't the only reason (evidently) that
causes these errors to crop up, but there may be a common thread between the
nfs issue and what I am seeing (I only have a single box -- combined FE/BE
so no nfs issues).

I reported before that I was going to test to see if background jobs
(transcoding, commflagging, other recordings) could be causing these
"hiccups".  Sadly, they don't seem to have any affect on my problem.  While
I was watching an mpeg file with no other myth-jobs running, there were
several instances of messeages similar to the above mentioned errors.
Specifically, mine look like:

2011-04-16 21:52:31.692 Player(0): Waited 100ms for video buffers
ALAAAAAAAAAAAAaaA

At this point, I am out of ideas.  Very annoying.  If anyone has other ideas
to try to help further narrow the search, I'm all ears.

-- Ken Emerson
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