[mythtv-users] Varying data formats during digital reception
Jose Paulo Moitinho de Almeida
moitinho at civil.ist.utl.pt
Tue Nov 6 10:38:28 UTC 2012
On Tuesday 06 November 2012, John Pilkington wrote:
> 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.
The problem happens with the aspect ratio change, which played without
problems in 0.25.
After updating to 0.26 the video stops there and then the frontend player
stops. With a longer sample the frontend player takes (much) longer to give
The log is full of "AFD: Unknown decoding error" messages (text written from
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