[mythtv-users] Varying data formats during digital reception

[John Pilkington]

On 05/11/12 23:26, JP Moitinho de Almeida wrote:
> On Monday 05 November 2012 18:40:21 John Pilkington wrote:
>> On 05/11/12 17:46, Jose Paulo Moitinho de Almeida wrote:
>>>> ...problem is, he has to get the program started before he can use the
>>>> editor to set the cutpoints...
>>>>
>>>> possible if you have sufficient padding before the actual content
>>>> starts, I suppose. But will the editor fail be
>>>> cause the format changed, even so?
>>>
>>> I am not at home but, effectively, using the editor is not possible.
>>> Editing those files past that point also hangs the frontend.
>>>
>>> But I can work with "tail/head -c" by iteration/bisection of the file,
>>> until I just capture the zone of the relevant point.
>>>
>>> I'll post that tonight.
>>>
>>> Regards
>>>
>>> ZP
>>
>> Or:  mv infile.mpg infile.mpg0
>>
>> dd bs=1M skip=35  count=40 if=infile.mpg0 of=infile.mpg
>>
>> adjust the skip number and see if it plays in Myth, then omit the count.
>>
>
> The link has a 10 Mb clip where the format changes. With this short version
> the frontend gives up without hanging, but the problem is clearly there.
>
> http://dl.dropbox.com/u/20086953/myth_samples/12002_20121104214000.mpg
>
> (thanks for the dd, I was missing the skip option)
>
> Regards
>
> ZP
>

For me vlc plays for 35 sec, mythtv as a recording (overwriting a short 
recording made here) or as a video for about 30 sec until the presenter 
walks on, then returns to the Watch Recordings screen.  If that's where 
you see the problem it might be better to have more data after it.

There's a change in aspect ratio just after the yellow countdown, but 
that doesn't seem to be a problem.  I didn't notice it initially.

You might find the vlc  'Tools > Codec info' informative.

All in MythTV 0.25.3.

John