[mythtv] [RFC][PATCH] Avoiding scaling

[Robert Clark]

On Sun, 2004-12-12 at 22:47, Doug Larrick wrote:

> Joe Barnhart wrote:

> > I really like this idea.  Watching high-def shows in
> > 1080i, I noticed that the mythfrontend sometimes
> > reports 1088 vertical resolution instead of 1080. I
> > think this causes Xv to scale the result, which lowers
> > the quality.  Note, this the VERTICAL dimension rather
> > than the horizontal which your patch addresses. 
> > Perhaps this idea has more general applibility?

  The patch should snap horizontal and vertical dimensions.

> Actually, all 1080i content is 1088-line MPEGs.  1088 is a multiple of 
> 16 (macroblock size); 1080 is not.  The bottom 8 lines are black (as per 
> the standard).  MythTV special-cases this size and gets it right.

  Interesting - I don't use this, so I haven't tested the effect my
patch has on it. From the source it looks like this is done before the
code I'm adding so would still work fine, but it would be good if
someone could test it to be sure.

	Robert