[mythtvnz] Various MythTV issues

[Steven Ellis]

On Tue, July 31, 2007 12:46 am, Stephen Worthington wrote:
> On Mon, 30 Jul 2007 22:53:21 +1200, you wrote:
>
>>
>>Hi all,
>>
>>I'm slowly finding the time to get our MythTV box up and running.
>>
>>The biggest problem at the moment is I cannot get the audio working whe=
n
>>watching tv. Current hardware is a Shuttle ST61G4 and a Pinnacle PCTV
>>Pro tuner card. This tuner has an audio out connection that I have
>>patched back into the line input of the Shuttle but so far cannot get
>>the audio through MythTV.
>>
>>I have verified that I can get audio out of the Shuttle using MythMusic
>>and that works fine. Also, I have plugged headphones directly into the
>>tuner card and the audio is there. I've also tried adjusting the volume
>>levels using aumixer but so far no go.
>>
>>Currently in the myth settings the audio is configured to come from
>>/dev/dsp.
>>
>>Another thing, when listening to the audio directly from the card, it i=
s
>>  badly out of sync with the picture. I'm assuming this is because of
>>the buffering MythTV is doing and hoping that when I can get the audio
>>sorted, this won't be a problem.
>>
>>Would appreciate any ideas that people have.
>>
>>Thanks
>>Dave
>
> Audio sync problems are often caused by LCD or plasma TVs.  These do
> considerable computation before displaying a frame, and that takes
> time.  My Panasonic TX-32LX70A seems to take about 120 ms.  When the
> sound is coming from the TV speakers, the TV delays the sound to
> match, but if it is coming from the MythTV audio output, you have to
> adjust the delay to match the TV.

I've noticed this with the MythTV Internal player, but not when using
mplayer which is kinda odd.

Steve


--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
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