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From which edge (inside or outside) do DVDs play?

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5 replies to this topic

#1 of 6 OFFLINE   Frank@N



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Posted November 03 2003 - 08:20 AM

I have a used disc that has a few troubling scratches on the outer edge. Would this area contain the beginning or the end/extras of the movie? I would like to check out the affected area quickly without watching the entire disc right now. Title is a Universal release from 2000.

#2 of 6 OFFLINE   Ed St. Clair

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Posted November 03 2003 - 10:18 AM

Inside out! And then outside in (for a dual layer)!
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#3 of 6 OFFLINE   Frank@N



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Posted November 04 2003 - 06:08 AM

OK, so a scratch on the outside edge would potentially cause a problem in the middle of the movie (for dual-layered).

#4 of 6 OFFLINE   Lyle_JP



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Posted November 04 2003 - 08:00 AM

<< And then outside in (for a dual layer)! >> Well, that's true for a Reverse Spiral Dual Layer disc, but there are also Parallel Tracking Dual Layer discs where both layers are read from the center-out. -Lyle J.P.

#5 of 6 OFFLINE   Bryan X

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Posted November 04 2003 - 10:12 AM

Plus you're assuming that there are or extras or that the extras are physically after the movie data. I'm no expert by any means, but couldn't the extras be located 'before' the movie whereas the actual movie may start near the edge of a dual layered disc? This could put a scratch on the outside of the disc near the beginning of a movie.

#6 of 6 OFFLINE   Jesse Skeen

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Posted November 04 2003 - 10:23 AM

I have a cheapo Koss portable player that can play discs with the lid open and you can see where the laser is- I use it mostly just to see exactly where on the disc stuff is.
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