[MPlayer-users] Why 720x540 as opposed to 640x480?

[Rich Felker]

On Thu, Mar 22, 2007 at 03:06:38PM -0400, Jorge Fábregas wrote:
> Hello everyone,
> 
> I'm still learning about DAR's and PAR's...I'm now wondering why does mplayer 
> upscales (vertically) my NTSC DVD to 720x540 as opposed to horizontal 
> squeezing as in 640x480?  I know the goal is to obtain a 4:3 AR but isn't the 
> latter best for interlaced material (still keeping the 480 lines)?

Displaying interlaced material on a progressive device is not even
possible without horrible artifacts. You need to do advanced repair
work..

Rich