[mythtv-users] 0.23: 720p MPEG-2 recordings with wrong time lengths, resolutions

Gabe Rubin gaberubin at gmail.com
Thu Oct 7 06:02:49 UTC 2010


On Wed, Oct 6, 2010 at 10:25 PM, Yeechang Lee <ylee at pobox.com> wrote:
> I've recently noticed a peculiarity with some 720p FireWire
> recordings. I mention it here before filing a ticket as 0.24 is coming
> soon.
>
> The issue occurs with some, not all, 720p FireWire recordings from ABC
> and its corporate cousin, ESPN. Afflicted recordings:
>
> * Display a doubled recording time. 30 minutes turn into one hour and one
>  hour into two.
> * Are detected, and displayed in Watch Recordings, as 1080i recordings
>  instead of 720p.
> * Cannot be losslessly transcoded properly; the audio track is
>  dropped. (I know this is a longstanding issue that sometimes occurs
>  during any lossless MPEG-2 transcode, but this always happens with
>  the affected recordings.)

Can you be specific as to which recordings?  I have two recordings
captured via firewire from ABC and ESPN today (Modern Family and
Pardon the Interruption respectively).  Neither exhibits the first two
symptoms you describe (I don't transcode, so I can't speak on that).

<snip>

> months--definitely after 0.23's release--but I can't tell whether this
> is due to a change in the 0.23/0.23.1 code (am currently on r26569),
> ABC/ESPN's feeds, or my cable provider's transmissions.
>

I am using r25469.


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