[mythtv-users] Guide Stutter

Jim Stichnoth stichnot at gmail.com
Sun Apr 29 14:12:40 UTC 2012


On Sun, Apr 29, 2012 at 6:07 AM, Scott & Nicole Harris
<snharris99 at live.com> wrote:
>>> Has anyone else noticed that with 0.25, the scrolling the guide in Live
>>> TV
>>> causes the live preview to stutter with every vertical selection change?
>>> It
>>> appears it may have something to do with the way channel icons are
>>> handled,
>>> because they all flicker as the redraw in their new positions when this
>>> happens.
>
>
>> I would guess it has to do with the various fixes for channel changing
>> in live TV.  I think there are queries going on about whether the
>> channel is currently tunable, and that is happening in the main event
>> loop.  If the query/queries take longer than the frame interval, there
>> is stuttering.
>
>
>> Jim
>
>
> Thanks for the insight!  Is there anything that can be done to help it?  One
> thing I don't understand is how the db can tell us if the channel can be
> tuned?  Can't the assumption be made that if we have a  channel in our list
> it should be tunable?  I am not trying to be snarky, I am trying to gain
> insight.

By "tunable", I mean it is checking whether the channel is on a
currently free/available tuner.  (Note that multiplexes and input
groups come into play here.)  This information is available only on
the backend.

Jim


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