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Old 25th November 2011, 07:23   #6  |  Link
vampiredom
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Join Date: Aug 2008
Posts: 233
Quote:
Originally Posted by Keiyakusha View Post
So don't forget to use your eyes too, not pure math.
Absolutely. This is very true. The stuff I put in here is meant to be a starting point and not a one-size-fits all solution. I hinted at that at the top of the post: That the pixel dimensions are not an absolute guarantee of the PAR for any given clip. (Though I state that DVDs adhere to standards, I guess I should have said that they should adhere to such standards).

Quote:
Originally Posted by Keiyakusha View Post
there is plenty of dvds that are utilize full 720 pixels width and to get everything right needs to be resized like 720->853 without any cropping
Yes, many DVDs do ... and if you really want the full image, you should not crop. Using 853 for width, however, will only work out correctly with RGB, 852 would be a good choice for YUY2 or YV12.

I appreciate your comments. If you or anyone finds an error in what I've written here, please let me know so I can correct it. I am trying to provide some clear guidance in an orderly fashion to newbies, so as to possibly avoid pointless discussions like the one I mentioned previously.
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