Differences between version 19 and predecessor to the previous major change of DVDVideo.
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| Newer page: | version 19 | Last edited on Tuesday, May 1, 2007 10:36:20 pm | by LawrenceDoliveiro | Revert |
| Older page: | version 18 | Last edited on Tuesday, May 1, 2007 9:56:24 pm | by LawrenceDoliveiro | Revert |
@@ -29,8 +29,10 @@
!Aspect Ratios
DVD-Video caters to a maximum frame resolution of 720*576 (PAL) or 720*480 (NTSC). Certain smaller fractions of these numbers are also allowed for lower-resolution discs. The target screen aspect ratio can be either 4:3 (conventional TVs and older cinema screens) or 16:9 (newer "widescreen" TVs).
You'll notice that the pixel numbers don't match either of these ratios: 720:576 is 5:4, and 720:480 is 3:2. That's because DVD-Video has ''non-square pixels''--the horizontal and vertical pixel densities are not equal. Not only that, but 16:9 widescreen titles do not have any more horizontal pixels than 4:3 ones: instead, the pixels are simply stretched out to the wider screen.
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+[DVDVideoTerminology] covers some more esoteric details.
Here endeth the good parts. The evil parts are described in [DVDVideoEvils].
!!See Also
