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afterdawn.com > forums > dvd±r discussion > dvd±r media > dvd+r media 2hr vs 4 hr
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dvd+r media 2hr vs 4 hr
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tbrown92
Suspended due to non-functional email address
_ 		6. October 2002 @ 21:44 _ Link to this message    Send private message to this user   
What is the difference in these(othere then time)? Does the 4 hr allow for longer movies? How does that effect with size of file?
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A_Klingon
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_ 		26. October 2002 @ 02:54 _ Link to this message    Send private message to this user   
The discs ALL have exactly the same storage capacity. There are no "2hour" or "4hour" types.

How much recording time you get from a disc depends on how much you compress the video. Generally, I think you get 2 hours of "normal" <dvd mpeg2> type video with no additional compression.

The back case of a Verbatim DVD+RW disc puts it thusly:

" 60 Mins @ 9.7 Mbits/s
120 Mins @ 5.1 Mbits/s
180 Mins @ 3.4 Mbits/s
240 Mins @ 2.5 Mbits/s

"DVD video recording time is dependent on MPEG2 compression ratio."

I bet *any* of the above-mentioned compression ratios would look superb on any regular TV set.

-- Mike --
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