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afterdawn.com > forums > digital video > video to dvd > what resolution to use for pictures imported into dvd-making software?
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What RESOLUTION to use for pictures imported into DVD-making software?
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LaraM
Suspended due to non-functional email address
_ 		3. February 2005 @ 09:41 _ Link to this message    Send private message to this user   
Newbie here :)

Here's the scoop. I am making a 15 minute DVD slideshow presentation using ArcSoft's ShowBiz DVD software. Essentially the movie consists of 150 pictures with background audio and I will burn the file as a "DVD without menus" when done.

Can anyone tell me what resolution (size and dpi) that each JPG picture should be so that there is NO loss of quality/pixellation when shown on a TV or digital projector? It's also important that the resolution NOT be overkill either. ie: what's the best minimum resolution for digital pictures so that I can keep my file sizes down, while still having a good quality DVD movie?

All help is appreciated!
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rebootjim
AfterDawn Addict
_ 		3. February 2005 @ 10:16 _ Link to this message    Send private message to this user   
640x480
Bigger is better.
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Black holes are where God divided by zero...
Cheers, Jim
LaraM
Suspended due to non-functional email address
_ 		3. February 2005 @ 10:26 _ Link to this message    Send private message to this user   
Thanks for the response. That doesn't seem very big at all. Printed, that's only 2" by 1.5" at 300dpi?! I am a graphic designer and am used to much bigger files than that....you sure I won't have any loss of quality at that size?

Cheers.
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rebootjim
AfterDawn Addict
_ 		3. February 2005 @ 11:05 _ Link to this message    Send private message to this user   
Because a TV can only do so many lines of resolution, and can only scan a total screen so many times per minute, 640x480 is usually fine.
I sometimes try for 720x480 to match NTSC aspect, but it doesn't seem to make a lot of difference.
[ + quote]
Black holes are where God divided by zero...
Cheers, Jim
LaraM
Suspended due to non-functional email address
_ 		3. February 2005 @ 11:26 _ Link to this message    Send private message to this user   
Awesome! Thanks for your help.
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rebootjim
AfterDawn Addict
_ 		3. February 2005 @ 12:07 _ Link to this message    Send private message to this user   
I must apologise.
It seems, it depends on your authoring application.
I found this (because you got me curious too):
720 x 540 is 4:3
You are designing on computer where we have square pixels. TV has rectangular pixels so in NTSC 720x480 is displayed as 4:3
Therefore to be able to design WYSIWYG we work with 720x540 so a circle on monitor will appear as a circle on TV screen.
If we work with 720x480/576 a circle designed on monitor will appear as ellipse on TV.
[ + quote]
Black holes are where God divided by zero...
Cheers, Jim
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