[mythtv] Ticket #4872: Detect if video is letterboxed and switch to corect fill mode

[Doug Larrick]

Mårten Bohlin wrote:
> Yes "2" means "XVMC_IDCT_MPEG2". Unfortunately I do not know how all
> that stuff works.
> 
> Could anybody tell me if it is possible to analyze a decoded frame
> when you run XvMC? And if that is possible where should I look for the
> decoded frame?

No, I'm afraid MythTV has no access to the decoded frame when using
XvMC.  The decoding takes place on the video card into its own memory.
For the same reason, the deinterlacers available when using XvMC are
severely limited.

-Doug

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