[mythtv-users] Time length is incorrect on some HD captures

[Yeechang Lee]

Tom Flair <tom at graniteskies.net> says:
> Here's something that has been bugging me for a little while now.
> Many (most?) programs I capture off of firewire in HD show an
> incorrect length when playing back on any frontend.  There aren't
> any artifacts to the program and nothing is actually lost when
> compared to an original broadcast.
> 
> As the most recent example, I give you Stargate Universe.  It's a 1
> hour program.  Any of my frontends play it back without issue, but
> the info within the frontend shows it is 51:57 in length.  If I look
> at the same program in MythWeb, it states the program is 1 hr.

This is definitely a subset of #799 (and discussed at, among other
places,
<URL:http://www.gossamer-threads.com/lists/mythtv/users/227272#227272>,
in particular Gregorio's message). #6430 is a duplicate.

r20311, which was committed a year ago, doesn't solve the issue, at
least not completely; I still see the disparity between the displayed
and actual recording times with recordings from 1) cable channels via
FireWire (typically the premium-movie ones; other channels vary), or
2) NBC or ABC recordings via FireWire or over-the-air ATSC.

Other points to consider:

* The NBC/ABC recording times' disparity is not consistent; each
  week's episode of a given show can and will differ, I presume based
  on how it was encoded.

* Similar to how the NBC issue began, the issue began appearing on ABC
  after KGO, the local affiliate, changed its encoding method
  (<URL:http://www.gossamer-threads.com/lists/mythtv/users/417094#417094>)
  in December 2009.

* MythWeb always displays correct elapsed recording times under
  "Length."

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