Scratches, DVD vs Blu-Ray

DesiPower

Lifer
Nov 22, 2008
15,299
740
126
I have noticed, in rented movies, the scratches on blu-ray disks are significantly less than on DVDs, even on new ones. For example, I rented a DVD which came out on Redbox just a few days back, probably rested 4 or 5 times max and there were quiet a bit of scratches. Whereas whenever I rent a Blu-ray, even if has been a couple of months since it came out on Redbox, there were almost no scratches. My experience has been universal, all DVDs lot of scratches and all blu-rays almost no starches. Even notices this with the ones I borrowed at the local public library.

It almost seems like that are made with significantly different materials. BRDs are made with much tougher, scratch resistant material or coating, whereas DVDs are not. Now if there is technology available to make then scratch free why does DVD not use it?
 

twinrider1

Diamond Member
Sep 28, 2003
4,096
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<--Currently watching Season 2 dvds of Boardwalk Empire from the local library
 

SKORPI0

Lifer
Jan 18, 2000
18,471
2,411
136
Same here. DVD have scratches and BD barely/none when borrowed from the library. Hate how some people handle them. They usually come with a hard coating, a scratch/repair cleaning might help.
 

Ferzerp

Diamond Member
Oct 12, 1999
6,438
107
106
Wild guess here, but the BD material may not be compatible with lasers of the wavelength DVD readers use.
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
167
106
Did you read that article? That technology went on to be used in Blu-ray, which is why they're more scratch resistant than DVD. So, yeah, they did use the technology, just not with DVD.
Indeed. The Blu-Ray standard actually requires that a hard-coat be used due to how close the data layer is to the surface.

http://en.wikipedia.org/wiki/Blu-ray_Disc#Hard-coating_technology

The TDK coat is one of several coats that manufacturers use to coat their disks.

As for why DVDs aren't coated, I have to assume it's because manufacturers are cheap. AFAIK these coat is compatible with DVDs, so the only tradeoff is manufacturing cost.
 

TwiceOver

Lifer
Dec 20, 2002
13,544
44
91
Also the fact that people going to redbox in general probably rent DVDs 10+ to 1 over blu-ray.
 

Ichinisan

Lifer
Oct 9, 2002
28,298
1,235
136
During the format wars, this was a well-known advantage of Blu-Ray over HD-DVD.

Sony and the BDA mandated that commercial Blu-Ray discs must have a certain anti-scratch coating. Though the same coating could be used by DVD manufacturers, none of them do it because it costs them money and they aren't required to.

OP is absolutely right in his assumption.
 

Ferzerp

Diamond Member
Oct 12, 1999
6,438
107
106
Indeed. 3 minutes of research agrees that there is no reason it can't be used on dvds and cds.
 

Ichinisan

Lifer
Oct 9, 2002
28,298
1,235
136
Also the fact that people going to redbox in general probably rent DVDs 10+ to 1 over blu-ray.

Nope. I've rented 10x more Blu-Ray than DVD from Redbox. No matter how many free codes they gave me, I had absolutely no interest in Redbox whatsoever until they started stocking Blu-Ray.
 

Imp

Lifer
Feb 8, 2000
18,828
184
106
Thank you streaming and digital distribution for getting rid of this hassle for me. I used to baby the hell out of my CDs and DVDs. Ya, the quality isn't as good, but meh.
 

mmntech

Lifer
Sep 20, 2007
17,501
12
0
Thank you streaming and digital distribution for getting rid of this hassle for me. I used to baby the hell out of my CDs and DVDs. Ya, the quality isn't as good, but meh.

The quality may not be as good, but at least you don't have to put up with the BS of Bluray. Oh, you just want to watch your movie? Here's ten unskippable previews.

Nice thing about BD though is used PlayStation games are always in great condition.
 

DesiPower

Lifer
Nov 22, 2008
15,299
740
126
Thank you streaming and digital distribution for getting rid of this hassle for me. I used to baby the hell out of my CDs and DVDs. Ya, the quality isn't as good, but meh.

Really? where the fuck can I rent Hobbit 3 for $1.50 right now? please do tell. Its $4.99 on Vudu and Amazon for a much inferior quality than BRD
 

poofyhairguy

Lifer
Nov 20, 2005
14,612
318
126
So, yeah, they did use the technology, just not with DVD.

Did you read the article? They did:

Earlier this year, Japan-based TDK began selling blank recordable DVDs treated with its patent pending polymer.

They did do it for DVDs but unlike with Blu Ray it wasn't part of the standard so it didn't stick. DVD is now lowest common denominator and cheap rules the day.
 

Imp

Lifer
Feb 8, 2000
18,828
184
106
Really? where the fuck can I rent Hobbit 3 for $1.50 right now? please do tell. Its $4.99 on Vudu and Amazon for a much inferior quality than BRD

Not my problem.

I didn't say anything about price.
 

natto fire

Diamond Member
Jan 4, 2000
7,117
10
76
All of a sudden, people belittling optical media on the internet are making a bit of sense.
 

Zodiark1593

Platinum Member
Oct 21, 2012
2,230
4
81
Wish I could hard coat all my PS2 games. They scratch if you so much as look at them wrong. I don't like handling them because of this.