[mythtv-users] Digital audio: centre channel drops out intermittently

[Marc Sherman]

On 1/15/2012 9:16 PM, Marc Sherman wrote:
>
> No, I really don't. All I think I've done is establish that it could
> possibly be a mythtv bug (possibly where it re-encodes AC3 5.1 audio),
> or it could possibly be a hardware/firmware failure in my jvc amp when
> it decodes the AC3 audio. I really have no idea how to proceed to
> isolate this further, so I can report a proper bug or replace the broken
> amp, as needed. Any suggestions would be greatly appreciated.
>
> One thing I did try this morning is configure the frontend with
> "--verbose playback,audio,libav". I then tried watching a recording that
> had previously had dropouts (last night's SNL broadcast) twice back to
> back, and no dropouts occurred. So either I've just got terrible luck,
> or perhaps the bug was a race of some kind and the extra verbose logging
> has tweaked the timings enough to avoid triggering it. :/
>
> I'll keep an eye on it, and if it recurs, I'll check the logs to see if
> anything strange shows up.

Well, it's since happened again, and there's nothing in the frontend 
logs to indicate any kind of bug that myth was able to detect.

I do have a recording which can replicate the problem fairly reliably, 
which is a new development.

- Marc