[MPlayer-users] Question about dvd resolution
molletts at yahoo.com
Mon Mar 10 20:32:21 CET 2003
On Monday 10 Mar 2003 18:38, Shane Wegner wrote:
> In encoding a 16:9 DVD movie, I get the following from
> mplayer when playing the actual dvd.
> VIDEO: MPEG2 720x480 (aspect 3) 29.97 fps 12250.0 kbps
> VO: [null] 720x480 => 854x480 Mpeg PES
> Why the two resolutions?
The file is actually 720x480, but because it's 16:9, if you displayed it at
720x480, it would come out 'squashed' horizontally on a 4:3-aspect monitor.
So it's scaled up to 854x480 to compensate.
> Now when I play the encoded avi with
> lavc, the aspect ratio changes.
> Movie-Aspect is 1.97:1 - prescaling to correct movie
> VO: [null] 720x366 => 720x366 Planar YV12
> why has the aspect ratio changed?
The aspect ratio has changed because you've cropped the black bands and thus
changed the height. Aspect ratio for square pixels = (width/height):1
More information about the MPlayer-users