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

[Robin Neatherway]

>  Well, I meant it differently - normally the "remove black bars" function
>  never "overscans" but with 4:3 movie on 16:9 screen there is a lot of
>  wasted screen space due to the black bars so I thought it would be cool
>  to automatically zoom in to 14:9 (called also half zoom) to partially
>  overscan and partially remove the black bars.
>
>  I realize it has not much common with the autodetect function but it
>  fits under the feature "remove black bars" :-)
>
>  So it would work as follows:
>
>  if (black bars in stream detected)
>      zoom as much as possible to remove the black bars;
>  else
>      if (video aspect ratio != screen aspect ratio)
>          if (half zoom allowed)
>              set half zoom to remove at least part of the black bars;
>
>
>  Currently it seems to miss the aspect ratio compare condition.

I would prefer it not do this. I feel that once the screen is filled
in either direction, you are seeing the programme as intended. Beyond
that, tweaking should be manual, or at least not tied up with the
"black bars in stream" detection.

--
Robin