2012-08-30, 15:31 | Link #1 |
Junior Member
Join Date: Sep 2006
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Correct Resolutions for DVD,BD
I haven't encoded for quite awhile and am behind on some stuff and can't seem to find a guide or anything online.
So, could someone give me the correct resolutions for 4:3 DVD, 16:9 DVD, 720p 4:3, 720p 16:9, 1080p 4:3, 1080p 16:9 For example I see some 16:9 DVD encodes as 704x396, 704x400, 704x480, and 720x480. I'm just wondering which ones are the best to use. |
2012-08-30, 16:29 | Link #2 |
Senior Member
Join Date: Dec 2008
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http://en.wikipedia.org/wiki/DVD-Vid...and_frame_rate
http://en.wikipedia.org/wiki/Blu-ray_Disc#Video |
2012-08-30, 23:38 | Link #3 | |
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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Quote:
16:9 DVD - 720x480 with SAR 16/9, or 640x360, 704x396(400), or 852(848)x480 720p 4:3 - 960x720 720p 16:9 - 1280x720 1080p 4:3 - 1440x1080 1080p 16:9 - 1920x1080 (sizes in parenthesis are MOD 16 safe)
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2012-08-31, 04:06 | Link #5 |
Translator, Producer
Join Date: Nov 2003
Location: Tokyo, Japan
Age: 44
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Screen aspect ratio... Some people use that for "source aspect ratio" but that's not how I use it.
I think some people use DAR for "Display Aspect Ratio". I've seen "Display Aspect Ratio", "Direct Aspect Ratio". I suppose I should have just said "PAR 32/27" and "PAR 8/9" to avoid confusion?
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2012-08-31, 04:21 | Link #6 |
Senior Member
Join Date: Dec 2008
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It's just that I've never heard "screen aspect ratio" before, so it did indeed confuse me. But everyone seems to define SAR differently...
Today I mostly hear SAR as defined in H.264 ("sample aspect ratio" which equals "pixel aspect ratio") or sometimes "storage aspect ratio" (SAR * PAR = DAR). |
2012-08-31, 10:42 | Link #8 |
Senior Member
Join Date: Dec 2008
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The video on DVDs is anamorphic, which means that the pixels are not rectangular and have to be resized on display. This means you have 3 options:
a.) let it stay anamorphic b.) downsize vertically c.) upsize horizontally a.) doesn't work reliably with all players and b.) means loss of information, so some people choose option c.), i.e. resizing to something like 848x480. Sometimes people do it when downsizing for a 480p release (from e.g. 1080 lines), too. |
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