Tell a two-layer printed DVD from a one-layer DVD, using your eyes only

[Hover]

I wonder if it is feasible. Would help a lot in buying quality DVDs in the place where I live. :-)

[LordRPI]

They let you open up the DVD case (and crack the plastic) before you buy?

I'm sorry for the trollish connotation, but it reminds me of a post I saw way back when saying that there was a guy in a Blockbuster video *testing out* DVDs on a laptop when he was actually ripping them to his hard drive.

[Mug Funky]

i'm all for better labelling...

i guess it's my own fault for not checking, but when i backed up my copy of dead leaves i was assured by the cover that it was DVD-5 (and it's a short movie, so why not?), but i ended up trying to burn 6.28 gigs on a 4.38 gig disc :eek:

surprisingly it plays back okay, but unsurprisingly on attempting to access the special features, the DVD player crashes hard.

[smiller667]

Dual-Layer-DVDs will often look slightly different on their reflective side - often slightly golden or bronze-coloured, while single-layer ones will look silver in colour.

But that's really just a rule-of-thumb, you would really have to check with your dvd-rom to be sure.

[VamPYR]

Originally posted by smiller667
Dual-Layer-DVDs will often look slightly different on their reflective side - often slightly golden or bronze-coloured, while single-layer ones will look silver in colour.

in some country that sold PRT dvd, single or double layer disc had the same 'golden or bronze-coloured' and they label single-layer as dvd9, so the customer will think they get the dvd9(dual-layer,golden or bronze-coloured dye). i have original dvd from US, single-layer are in silver dye and dual-layer golden or bronze-coloured dye.

[Cantide]

Apart from slighty different colour, I think DVD-9 have two barcodes in the inner circle near the hole. One for each layer. At least its that way with all my DVDs.

[NobbyNobbs]

I think the original poster meant how you could see the diference between original dual-layer disc's and bootleged single layer discs, as he said it would help a lot in getting quality DVDs where he lives.

[Cantide]

Well, if you can open the case, you just look at bottom side of the disk near the centre and check for the number of barcodes/serial number (they are stamped in): 1 barcode -> 1 Layer. 2 barcodes -> 2 Layer.
I don't know if bootlegged discs have that, but I think that the barcodes are used during manufacturing for quality control purposes. And the manufacturing devices used would be the same.