[mythtv-users] nonlinear 16:9 stretch?

[Michael T. Dean]

William wrote:

>>divide it into 10 equally, or nearly equally wide vertical stripes.
>>
>>1) For the stripe on the far left you could repeat each pixel 3 times.
>>2) For the next two stripe repeat each 2 times.
>>3) Then stripes four through seven are just a normal one:one mapping.
>>4) The next two stripes would be the same as (2).
>>5) The final stripe would be the same as (1)
>>
>>In other words the pattern for repeating pixels would be... 
>>[3,2,2,1,1,1,1,2,2,3]
>>
>Dont forget that the vertical also needs to be scaled so your routine gets
>to be quite a bit more complicated. Not sure if some kind of a lookup table
>might do the trick. Divide the screen into zones and assign each zone a pair
>of strech values. You would need to limit the number of pixels per zone to
>keep it from becoming visible as a pattern.
>  
>
He's talking about stretching true 4:3 content, not letterboxed 4:3 
content.  Therefore, you don't want to stretch the vertical (otherwise, 
you're just doing a zoom--which is more appropriate for letterboxed 4:3 
content, anyway).

See the link that David posted:

>http://www.cnet.com/4520-7874_1-5140690-3.html
>solution 3 : Panoramic mode (the man with the fat hands...)
>
Mike