[mythtv-users] commercial skipping recorded shows
Craig Longman
craigl at begeek.com
Sun May 11 12:45:16 EDT 2003
Bruce Markey wrote:
> Craig Longman wrote:
>
>> anyway, seems like this problem doesn't bother anyone else, but i
>> wanted to point out where this all started.
>
> I don't think this is usual behavior that everyone is seeing
> which would explain why it doesn't seem to bother anyone else.
>
> Here are some possible explanations that come to mind from more likely
> to less likely:
>
> -) When watching while recording, the CPU is pegged causing the
> file to have lots of missing frames and throwing off the timecodes
> and frame rate. If this is the case, you would see the video speeding
> up and slowing down and possibly hear choppy audio. See:
> http://www.mythtv.org/docs/mythtv-HOWTO-19.html#ss19.4 . Watch
> "top" to see if your CPU idle time is near zero during playback
> while recording.
no, i see no skipping either in live mode nor in the actual recording.
the cpu usage is <25% (hardware mpeg).
> -) mythbackend crashes, dies or is killed before the recording
> ends. The seektable and blank frame info wouldn't be written and it
> would behave worse than watching while recording.
no, it manages to run fine. infact, after recording shows i watched
(when no seektable was written) the next day it recorded something i
didn't watch and the seektable was right.
> -) Your database schema doesn't have the 'recordedmarkup' table.
> Unlikely. Commercial skips would suck for all pre-recorded.
no, the tables there and has lotsa rows in it. as i said though, i can
reliable cause it to happen/not happen by watching/not watching the show
while its recording.
> -) Manual recording. The few times I tried this it didn't seem
> to have the seek information after after it finished. I never
> looked to see why.
nope, scheduled.
> The first seems most likely because if the CPU was busy but
> keeping up while recording only, watching at the same time might
> push it over the edge. Several people reported 'damaged' files
> around the time of the 0.8 release if the CPU was pegged and/or
> the MPEG4 quality setting where changed drastically.
no, i've been keepign a closish eye on this as its only an ahtlon 1GHz (
i can't believe 1GHz machines are questionably good enough for something
already! ;-)
anyway, i guess i'll keep looking into it. it is so easy to reliably
reproduce that i'm 110% confident its a bug, just not sure why only i
see it. thanks for the suggestions though!
CraigL->Thx();
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