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852 x 480 resolution - What's this?
- Thread starter jasondunn
- Start date
AtTheAsylum
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- Jan 17, 2008
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You're right in that the maximum resolution of a DVD is 720x480 (NTSC) or 720x576 (PAL) but what you're not taking into account (I didn't understand it either until just recently 
) is that widescreen DVD's are generally anamorphically encoded. That is the picture is stored on the DVD in the resolutions above but is actually displayed in another resolution. Sounds confusing doesn't it?
Here's a really, really good explanation (http://trac.handbrake.fr/wiki/AnamorphicGuide).
Take a look at the section titled "What happens when anamorphic is turned off". This is basically the 720x404 resolution option you see in CD-M (ie: compress the vertical dimension to achieve the correct aspect ratio).
The section titled "Crude anamorphic" is the 852x480 resolution option in CD-M (ie: expand the horizontal dimension to achieve the correct aspect ratio).
If you don't want to loose any picture quality and space is not an issue choose the 852x480 option.
) is that widescreen DVD's are generally anamorphically encoded. That is the picture is stored on the DVD in the resolutions above but is actually displayed in another resolution. Sounds confusing doesn't it?Here's a really, really good explanation (http://trac.handbrake.fr/wiki/AnamorphicGuide).
Take a look at the section titled "What happens when anamorphic is turned off". This is basically the 720x404 resolution option you see in CD-M (ie: compress the vertical dimension to achieve the correct aspect ratio).
The section titled "Crude anamorphic" is the 852x480 resolution option in CD-M (ie: expand the horizontal dimension to achieve the correct aspect ratio).
If you don't want to loose any picture quality and space is not an issue choose the 852x480 option.