[mythtv-users] mythcommflag not working

[Mike Perkins]

On 08/09/14 18:39, Rob Owens wrote:
> On Mon, Sep 08, 2014 at 12:51:27PM -0400, Michael T. Dean wrote:
>> On 09/08/2014 12:26 PM, Rob Owens wrote:
>>> I've been having a problem with mythcommflag not working.  Upgrading to
>>> 0.27.3 did not fix it.  I'm seeing tons of these messages in
>>> mythcommflag.log:
>>>
>>> mythcommflag[888]: E Decoder avformatdecoder.cpp:4891 (GetFrame) decoding error
>>>        eno: Unknown error 541478725 (541478725)
>>>
>>> Can anybody suggest further debugging steps?
>>
>> Looks like corrupt recordings and/or recordings in a format that
>> ffmpeg libs don't handle well--though corrupt recordings is more
>> likely.  Could be due to antenna misalignment/breakage (due to
>> wind/wear/gravity/...) or even just changes by your broadcaster
>> which require a rescan.
>>
> The recordings are from Dish Network.  Most (all?) are high definition,
> but I'm using a PVR-150 to capture using s-video.  The recordings play
> back fine.  Every once in a while I have a recording that has one
> commercial break detected, but misses the rest of them.
>
> Does that help the diagnosis at all?  Do I need to look into the
> settings I'm using for capture?
>
If you are using a PVR150 or variant then you are encoding the signal yourself. 
The quality of the signal cannot therefore be down to external transmission 
problems, but rather within the PVR150 itself, or later in the signal chain - 
including the recording and playback processes.

-- 

Mike Perkins