[mythtv-users] recordings are seconds short
Tom Dexter
digitalaudiorock at gmail.com
Sun Oct 28 21:52:21 UTC 2007
On 10/28/07, Jerome Yuzyk <jerome at supernet.ab.ca> wrote:
>
> I've been recording and watching sports lately. Usually I add a half-hour for
> each game.
>
> I've noticed over the last few weeks that my recordings are a couple seconds
> short. For example, today's Colts-Panthers game was set to record for 3-1/2
> hours. However, the recording is actually 3:29:57, as reported by the OSD.
> Niggling, but I wonder about the math. I use NTPD so it's not like my clock
> is (or should be) drifting 3 seconds over 3.5 hours, and my recordings are
> starting on time, not 3 seconds early.
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>
I'm sure your backend is in fact recording for 3-1/2 hours just as
you've scheduled. The OSD display calculates the time based on the
number of frames and frame rate, which is never going to be that
close. As a matter of fact, dramas broadcast by NBC, because of odd
frame rate changes etc that mythtv doesn't interpret correctly yet,
show as around 50 to 53 minutes for me when they're actually an hour.
Tom
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