[mythtv-users] problems recording ABC in SF bay area

Karl Newman newmank1 at asme.org
Fri Apr 12 16:30:52 UTC 2013


On Mon, Apr 8, 2013 at 9:10 PM, Marco Nelissen <marco.nelissen at gmail.com>wrote:

> Anyone else having problems with ABC in the SF bay area? I'm getting
> frequent dropouts/distortion/corruption on playback.
> In the log, it'll print something like:
>
> 2013-04-08 21:00:25.615 [ac3 @ 0x30e4b40]frame CRC mismatch
> 2013-04-08 21:00:25.625 [ac3 @ 0x30e4b40]frame sync error
> 2013-04-08 21:00:25.625 AFD Error: Unknown audio decoding error
> 2013-04-08 21:00:25.625 [ac3 @ 0x30e4b40]frame CRC mismatch
> 2013-04-08 21:00:25.753 [ac3 @ 0x30e4b40]frame sync error
> 2013-04-08 21:00:25.753 AFD Error: Unknown audio decoding error
> 2013-04-08 21:00:25.754 [ac3 @ 0x30e4b40]frame CRC mismatch
> 2013-04-08 21:00:25.933 [mpegvideo_vdpau @ 0x30e4b40]slice below image (98
> >= 45)
>
> I've tried playing back these recordings with VLC and mplayer, and they
> also have problems playing them, so it's really the recordings that are
> bad. There is nothing in the backend log to indicate anything went wrong
> during recording though. Is ABC just broadcasting garbage or something?
>
>
I'm a little late but I've had problems in the past on Wednesday nights.
I'm in the north bay, using Comcast with a standard-def DTA into an analog
PVR-500. The symptoms (when watching the recording in myth) were that the
video would sort of freeze, then flash back and replay the last ~5 seconds,
then jump forward to real-time again. It did this repeatedly, maybe every
10 seconds. It was quite annoying. I never watched it live direct  from
cable on another TV to see if it was a signal problem or a myth problem but
it only ever happened on ABC, and we only ever noticed it on Wednesday
nights. For what it's worth, I haven't seen these symptoms for maybe a
month at least.

Karl
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