Doom9's Forum - View Single Post - madVR - high quality video renderer (GPU assisted)

ajp_anton · 9th December 2012, 17:34

Some DVDs are made with ITU scaling in mind, some are not (in which case they are scaled to exactly 4:3 or 16:9).
I guess you can learn which studios do what, but there's no way of telling for sure except to find and look at round objects, or compare with a HD version.
If you have two DVDs with different scalings, your setup *will* play one of them wrong.

According to ITU, 4:3 DVDs are scaled to 15:11 and 16:9 DVDs are scaled to 20:11. For both PAL and NTSC.

Guidelines I've heard for when a DVD is likely to *not* have ITU scaling: (not guaranteed to be correct)
- The DVD was produced in or after 2006.
- There is very little cropping at the sides (image width is closer to 720 than 702).

9th December 2012, 17:34	#16106 \| Link
ajp_anton Registered User Join Date: Aug 2006 Location: Stockholm/Helsinki Posts: 805	Some DVDs are made with ITU scaling in mind, some are not (in which case they are scaled to exactly 4:3 or 16:9). I guess you can learn which studios do what, but there's no way of telling for sure except to find and look at round objects, or compare with a HD version. If you have two DVDs with different scalings, your setup will play one of them wrong. According to ITU, 4:3 DVDs are scaled to 15:11 and 16:9 DVDs are scaled to 20:11. For both PAL and NTSC. Guidelines I've heard for when a DVD is likely to not have ITU scaling: (not guaranteed to be correct) - The DVD was produced in or after 2006. - There is very little cropping at the sides (image width is closer to 720 than 702). Last edited by ajp_anton; 9th December 2012 at 17:41.