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Old 06-06-2010, 08:34 PM   #1
Maverick2002
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Question What is normal DVD resolution?

I don't get it. What is the standard DVD resolution (like movies you would rent today)? Is it 720x480? If so, what happens with movies that are widescreen (which is most movies) in 16:9 aspect ratio? Is the movie actually an even lower resolution (720x405 which is 16:9) but with the extra pixels on the top and bottom just as black bands? I can't believe I can't find a clear answer to this ...
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Old 06-06-2010, 08:41 PM   #2
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DVD Aspect Ratios

Wiki
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Old 06-06-2010, 08:45 PM   #3
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So it's 720x480 like I thought, thanks.
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Old 06-06-2010, 09:29 PM   #4
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DVD video is NTSC 16:9 720x480 at 29.97fps.
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Old 06-06-2010, 10:19 PM   #5
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Quote:
Originally Posted by Maverick2002 View Post
I don't get it. What is the standard DVD resolution (like movies you would rent today)? Is it 720x480? If so, what happens with movies that are widescreen (which is most movies) in 16:9 aspect ratio? Is the movie actually an even lower resolution (720x405 which is 16:9) but with the extra pixels on the top and bottom just as black bands? I can't believe I can't find a clear answer to this ...
On most movies, the letterboxes aren't part of the actual data. A technique called anamorphic compression (wiki) is used so that there are always 480 vertical pixels and 720 horizontal pixels of actual image data. The resulting movie is then converted to the proper aspect by the DVD player. BTW, this is why upscaling DVD players work so well. There is actually 480 vertical pixels worth of data, but a standard TV just can display them. Increase the vertical resolution of the set, and suddenly you can display all of those extra pixels!
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Old 06-06-2010, 10:42 PM   #6
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you still lose some, films are generally not 16:9 but something higher.
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Old 06-07-2010, 11:47 AM   #7
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Right, movies in theaters are 2.39:1
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Old 06-07-2010, 12:28 PM   #8
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Quote:
Originally Posted by Maverick2002 View Post
Right, movies in theaters are 2.39:1
Depends on the movie... Theater screens are 2.35/2.40:1 with curtains on the sides. If the movie is 1.85:1, they close the curtains slightly so you don't lose contrast.
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Old 06-07-2010, 12:40 PM   #9
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Quote:
Originally Posted by 0roo0roo View Post
you still lose some, films are generally not 16:9 but something higher.
Was this directed at me? Anamorphic compression works with any source AR.
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