[mythtv] automatic 14:9 or 4:3 zoom based on black bars detection?
pstehlik at sophics.cz
Sun May 20 13:26:27 UTC 2007
Daniel Kristjansson píše v Ne 25. 06. 2006 v 11:41 -0400:
> > Now I'd like to automate the switching between the zoom modes. First, if
> > the source is in 4:3 format then I'd like to enable the 14:9 Zoom by
> > default. Could someone please suggest a place in the source code to
> > check for the input format and to enable/disable the zoom?
> There isn't a place for this. There are three distinct reasons
> why people use the aspect ratio overrides.
> 1/ For coping with material that misreports the aspect ratio;
> or does not report it at all and uses non-square pixels.
> This would never be a 14:9 aspect ratio BTW, as we are
> refering to the aspect ration of the transmission including
> the black bars.
> 2/ For zooming into material simply as you do ( and I do ).
> "Proper Zoom"
> 3/ For filling the screen with video when the aspect ratio
> of the source material does not fit the display aspect ratio.
> This results in either lost portions of the image, or the
> improper aspect ratio; but this is the desired result.
> "Improper Zoom"
> So before you do any auto-zoom work or add 14:9 zoom you would
> want to separate out the proper zoom portion (#2) of the "aspect
> ratio overrides" into a new setting.
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