[mythtv-users] Varying data formats during digital reception

Mike Perkins mikep at randomtraveller.org.uk
Mon Nov 5 17:03:54 UTC 2012

On 05/11/12 16:00, John Pilkington wrote:
> On 05/11/12 14:37, Jose Paulo Moitinho de Almeida wrote:
>> On Saturday 03 November 2012, Mike Perkins wrote:
>> ....
>>> The question is: What changes are being made to mythtv to cope with the
>>> fact that the bitrate, framerate, resolution, etc of any recorded file may
>>> change from instant to instant?
>> Last Saturday I updated to 0.26 (mythbuntu system with an old nvidia card ==>
>> nouveau, opengl, no vdpau) and since then I have been "trying to understand"
>> why the frontend sometimes hangs. The files are ok for vlc, but mplayer does
>> not like them.
>> The problem happen when some new programs start and I was ready to blame the
>> broadcaster, but reading this information I realised that the problem seems to
>> happen exactly when the program changes from wide to 4:3, something that
>> happened in 0.25 without problem.
>> Is there a possible relation? I can try to cut a sample with the problematic
>> passage.
> I would think it's very likely.  The various players probably look at different
> places in the recording to identify the streams that are present.
> If you can create a series of cutpoints using the MythTV editor you may be able
> to get a usable version using this.  It needs only a seektable based on valid
> keyframes.  I haven't had occasion to use it recently and it used
> mythconfig.txt, which is no more.
> http://www.mythtv.org/wiki/Mythpycutter
...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 because the format changed, even so?


Mike Perkins

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