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Dvd defected

Forums - Discs & Movies - Dvd defected 

27th March 2006 0:36  #1

Tommy Member Join Date: March 2006 Location: United States Posts: 110
Dvd defected
How do you know a dvd would not work without having to play it ... does it have to be scratched or could it look normal and not work cuz when I buy seasons I have to play all the discs to see if it works so I want to know if there is an easier way.

27th March 2006 21:41  #2

Tommy Member Join Date: March 2006 Location: United States Posts: 110
49 views and not 1 post this is my second viewen ...

27th March 2006 21:47  #3

Matt Contributor Join Date: October 2004 Location: United States Posts: 2,113
There are any number of reasons that a disc may be defective from anything other than visible, physical damage to the disc. You just have to try each disc to find out if you got a lemon.

27th March 2006 21:48  #4

Mal Webmaster Join Date: May 2001 Location: United Kingdom Posts: 1,290
There's no way of telling unless you see serious physical damage on the surface. Anything could go wrong from batch related authoring errors, to minor mistake during duplication, to the materials disintegrating over time.

Only way you could do it automatically is if someone created an internet service that stored a unique hash (special short code) for every DVD in the world, and then provided software to compare the hash they have on their website to the version you have in your computer's DVD drive. Such a service doesn't exist as far as I know.

27th March 2006 22:32  #5

Slave2Horror Member Join Date: March 2006 Location: United States Posts: 116 Send a message via MSN to Slave2Horror
if there is physical damage on the disc then it is your own fault and it means you should take care of your discs!!

27th March 2006 23:01  #6

Adrian Senior Member Join Date: September 2005 Location: United States Posts: 1,305
Slave2Horror wrote: if there is physical damage on the disc then it is your own fault and it means you should take care of your discs!!

I hope that is sarcasm because it isn't even close to being a truthful statement.  I can't tell you how many scratched discs I have straight out of the packaging.

27th March 2006 23:15  #7

Tony DeFrancisco Senior Member Join Date: July 2005 Location: United States Posts: 2,652
Adrian wrote: Slave2Horror wrote: if there is physical damage on the disc then it is your own fault and it means you should take care of your discs!!

I hope that is sarcasm because it isn't even close to being a truthful statement.  I can't tell you how many scratched discs I have straight out of the packaging.
Especially when you buy season disks and they fall out of the packaging like the South Park seasons are like and they get all scratched.

28th March 2006 0:05  #8

Tommy Member Join Date: March 2006 Location: United States Posts: 110
Okay thanks for all your replys but what I'm also asken is if you play the disc do you have to play the whole movie to see if it stops or skips or can you put the disc in and it just shows the Play, Special Features,a nd other thigns?

28th March 2006 2:30  #9

Mal Webmaster Join Date: May 2001 Location: United Kingdom Posts: 1,290
DVD players load data in short bursts to fill an equally small amount of memory (you can tell by watching the activity light on a DVD drive). The last half of a movie could be corrupt but the player wouldn't notice until just before it reached it.

28th March 2006 9:48  #10

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
If one of the discs is faulty, just send an e-mail, telling them the problem and they'll give you an address to return the faulty disc and then they'll replace the DVD for you.

28th March 2006 21:57  #11

Tommy Member Join Date: March 2006 Location: United States Posts: 110
Okay so that means when I get a show on dvd I have to play all the discs watch them all and see if any is not broken b/c I can only exchange dvds from the store within 30 days ...

28th March 2006 22:06  #12

Worst Nightmare Senior Member Join Date: July 2002 Location: Australia Posts: 6,706 Send a message via AIM to Worst Nightmare Send a message via ICQ to Worst Nightmare Send a message via MSN to Worst Nightmare Send a message via Yahoo to Worst Nightmare Send a message via Google to Worst Nightmare
I think Floyd is refering to the studio that produced the disc

28th March 2006 23:48  #13

Tommy Member Join Date: March 2006 Location: United States Posts: 110
O?

29th March 2006 5:23  #14

Matt Contributor Join Date: October 2004 Location: United States Posts: 2,113
Dammit! Who stole my tiny, thumb and forefinger violin?!?!

29th March 2006 8:36  #15

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
I mean if in six or 12 months time you come across a faulty DVD, you just send the studio an e-mail explaining that you have come across a faulty disc and they'll ask you to send that faulty disc back to them (not the entire box set, just the single disc) and they will replace it for you.

29th March 2006 12:54  #16

Tommy Member Join Date: March 2006 Location: United States Posts: 110
Okay thanks floyd dylan.

29th March 2006 16:25  #17

Adrian Senior Member Join Date: September 2005 Location: United States Posts: 1,305
floyd dylan wrote: I mean if in six or 12 months time you come across a faulty DVD, you just send the studio an e-mail explaining that you have come across a faulty disc and they'll ask you to send that faulty disc back to them (not the entire box set, just the single disc) and they will replace it for you.

They may or may not.  It depends on the studio and your persistence level.  I bought the French Connection box set when it was first released.  I openned it a couple of years later and noticed there was no disc 1 in the set.  It took several emails to Fox to convince them I wasn't just trying to scam them out of a free disc.

29th March 2006 20:11  #18

floyd dylan Banned Join Date: April 2004 Location: United Kingdom Posts: 913
I could understand that, that's why I always check even at Christmas time, because I had The Car DVD a few christmas' back, only to find that there was disc, so from that lesson every Birthday and Christmas or whatever special occasion we always check inside the case, even if it's sealed up.

30th March 2006 4:33  #19

videophile Member Join Date: March 2006 Location: United States Posts: 2
I bought The Adventures Of Superman - Season 1 and one disc was missing.  I called Warner Brothers and they asked me where I purchased it. I told them Best Buy and they told me I had to take it back to them.

30th March 2006 13:21  #20

Trap Door Member Join Date: January 2006 Location: United Kingdom Posts: 250
I've had DVDs which were scratched to bits and they do still play fine with no problems. Then I've had perfectly unscratched ones which didn't work. So the rule of thumb is to check by putting it into the player.

30th March 2006 21:30  #21

Tommy Member Join Date: March 2006 Location: United States Posts: 110
Trap Door wrote: I've had DVDs which were scratched to bits and they do still play fine with no problems. Then I've had perfectly unscratched ones which didn't work. So the rule of thumb is to check by putting it into the player.

and play the whole thing right?

30th March 2006 23:32  #22

Arellium Member Join Date: January 2006 Location: United States Posts: 136
I don't think there is any way you could tell if it will work or not than without having to play the DVD.

31st March 2006 16:15  #23

Adrian Senior Member Join Date: September 2005 Location: United States Posts: 1,305
Tommy wrote: Trap Door wrote: I've had DVDs which were scratched to bits and they do still play fine with no problems. Then I've had perfectly unscratched ones which didn't work. So the rule of thumb is to check by putting it into the player.

and play the whole thing right?


That's kind of a loaded question.  The scratches could effect something that you are never going to know, like Dolby 2.0 soundtrack or commentary or subtitles, etc.  Playing the whole DVD is a time consuming process if you want to go through every permutation of how a DVD can be played.

However, on the technical side, the algorithm for forward error correction on DVDs is much better than the one used for CDs.  This means that a scratch can actually obfuscate the data, but the data can be reconstruct within the player from the data that is available.

31st March 2006 20:47  #24

Brian O. Member Join Date: October 2005 Location: United States Posts: 92
One of the discs on my Buffy season 2 set was faulty, I could see on the surface that something went wrong in the production or something (don't know the technical term). I've seen this problem on a lot of Fox's season set DVDs for some reason.

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