[mythtv] DVB Radio issues
David Matthews
dm at prolingua.co.uk
Mon Jan 8 20:51:18 UTC 2007
Steven Ellis wrote:
> Didn't get any replies on Myth Users and I'm wondering if I should report
> these as bugs.
>
> 1. General performance issues playing DVB-S Radio. When I first tune to a
> channel I get a lot of stutters and it takes a while for the audio to
> stabilise. Appears to be an issue with the audio video sync as after a
> while it looses sync again. What is the frame rate of the fake video
> stream?
>
It's 25 FPS.
I've seen problems like this in some situations and haven't managed to
pin it down. When this happened on minimyth I managed to solve it by
ensuring that mythfrontend ran as an unprivileged user rather than root.
I still don't understand why that worked.
That may not be the problem in your case. I suspect that this has
something to do with the data rate and buffering in the front end. The
bit rate of a normal TV video+audio stream is substantially higher than
that of a radio+fake video stream and when I've seen stuttering it
usually seems to be accompanied by prebuffering pauses in the log.
David.
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