[mythtv-users] HDMI keep alive, maybe via sending silent audio?
John Veness
John.Veness.mythtv at pelago.org.uk
Fri May 27 15:56:34 UTC 2016
As a follow-up to this thread, I've mostly given up on this. The
occasional time when MythTV playback would start while "aplay" was
playing a few seconds of silence was annoying.
I tried to add a MythTV System Event Handler, to do "pkill aplay" when
playback starts, but that didn't seem to work. I didn't really look into
why. It may be that the pkill itself didn't work, or that it was taking
too long to pkill the process, and the sound device was still in use by
the time MythTV playback started. In any case, the whole thing seemed
clunky.
One more thing, I reported earlier that when I had an HDMI cable from my
HTPC to the soundbar, and another HDMI cable out from the soundbar into
the TV (so using the soundbar as an HDMI switcher as well as speakers),
I had to add 350ms of audio delay to MythTV, otherwise sound would come
out before the pictures. I have experimented some more and although that
is the case, any other HDMI source I've tried (Roku, PS3, Xbox 360) does
not have this problem. If I plug my HTPC directly into the TV I don't
have any problem either.
I can't work out why MythTV would act differently when played "through"
the soundbar like that. Anyone have any ideas? I'm using Intel graphics
if it makes a difference. I haven't done any more tests like using VLC,
or looked in frontend logs.
John
--
John Veness, MythTV user, UK, DVB-T
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