Newbie question: If you don't consider the label, is there a simple way to tell the difference between a commercially pressed DVD and a burned DVD-R? By looking at the "grooves"? By using a computer program to check?
Look at the bottom side of disc: Shiny silvery= original- pressed in dvd format Purplish= Dvd+r/-r Gray/Dark gray= Dvd-rw/+rw Here's a Blank Sony +r 1x-8x using dvdinfopro: Media Information Region information N/A not a DVD-VIDEO Media code/Manufacturer ID YUDEN000T02 Media Product Revision Number 00h Format Capacity Blank Disc Free Blocks 405405696 Free Capacity 4.38GB(4.70GB) Book Type DVD+R Media Type DVD+R Manufacturer Rated Speed 8.0x 11080KBps Available Write Descriptor CLV 8.0x 11080KBps Available Write Descriptor CLV 4.0x 5540KBps Available Write Descriptor CLV 2.4x 3324KBps Linear Density Blank Disc Track Density Unknown Number of Layers 1 Complete Media Code 00000000 01 02 00 00 A1 0F 02 00 00 03 00 00 00 26 05 3F .............&.? 00000010 00 00 00 00 00 00 03 59 55 44 45 4E 30 30 30 54 .......YUDEN000T 00000020 30 32 00 38 23 54 37 10 02 4E 72 02 8C 63 16 16 02.8#T7..Nr..c.. 00000030 0B 0B 0A 0A 01 19 1B 0C 0C 0C 0D 01 00 00 00 00 ................ ---------------------------------------------------------------------------- Here's an original dvd: Media Information Disc Regions are 1,4 Media code/Manufacturer ID N/A Pressed DVD Format Type UDF 1.02 Volume Name SCARY_MOVIE2 Application id Implementation id Daikin U.S. Comtec Lab Recording Date/Time (mm/dd/yyyy) 11/ 9/2001 14:58:02 Format Capacity 7.94GB(8.53GB) Book Type DVD-ROM Media Type DVD-ROM Data area starting sector 30000h Data area end sector 3F8D83h Layer 0 end sector 22CD8Fh Linear Density 0.293um/bit Track Density 0.74um/track Number of Layers 2 Layer Track Path direction (OTP) Opposite track path Complete Media Code I tried dvdidentifier,but everything was grayed out when I clicked Identify with the original dvd. http://www.dvdinfopro.com/
Thank you, saugmon, I can now see all I need to know in dvdinfopro. My problem was I live in China where new DVD movies cost less than a dollar and are released almost before the filming has been completed. In China, many copies are made to look like originals, and with such prices, there are many pressing defects. So I wanted to see whether they are selling pressed or burned DVDs here.
Sounds more like majority of those pirated discs will be actually the burned format of +/-. I've never seen one. If it is a burned copy,dvdinfopro/dvdidentifier/nero speedtest will all tell you. Dvdinfopro has a free version with adverts. I like the PI/PO error scanning test that is in that program. Very handy indeed.
I rather think the majority of the discs will be pressed, there being a billion Chinese, they sell millions of these DVDs, with numbers like that it would take too long to burn them, even at 16x.
