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tech_n9ne

Whats a DL?

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They have almost double the space of a normal DVD-5 and so can fit more data on them. If you are backing up movies, you can fit a whole movie on them, uncompressed. Or you might like to fit 2 (shorter) movies on them.

 

Regards

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I got some dual layer DVD discs for christmas and I dont know what they do differently than a regular dvd

 

I think someone should give you at least a little more on the specifics here. I'm really new to this but I do know when I was looking at drives everyone told me to make sure to find out if a drive will support the dual layer DVDs. It's all just academic if you have an older drive without that support. My drive is one that was given to me before I had made a decision about what to buy so I ended up with an older model that will not play or burn dual layer, it kind of sucks but I guess that free is free.

Edited by tmiller

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I think someone should give you at least a little more on the specifics here.

 

 

DVD+R DL

DVD+R DL or called DVD+R9 is a Dual Layer writeable DVD+R. The dual layered discs can hold 7.95 computer GB* (called DVD-9) and dual layered double sides 15.9* computer GB (called dvd-18).

 

DVD-R DL

DVD-R DL or called DVD-R9 is a Dual Layer writeable DVD-R. The dual layered discs can hold 7.95 computer GB* (called DVD-9) and dual layered double sides 15.9* computer GB (called dvd-18).

 

DVD-5, holds around 4 700 000 000 bytes and that is 4.37 computer GB where 1 kbyte is 1024 bytes* . DVD+R/DVD+RW and DVD-R/DVD-RW supports this format. Also called Single Sided Single Layered. This is the most common DVD Media, often called 4.7 GB Media.

 

DVD-10, holds around 9 400 000 000 bytes and that is 8.75 computer GB. DVD+R/DVD+RW and DVD-R/DVD-RW supports this format. Also called Double Sided Single Layered.

 

DVD-9, holds around 8 540 000 000 bytes and that is 7.95 computer GB. DVD+R supports this format. Also called Single Sided Dual Layered. This media is called DVD-R9, DVD-R DL, DVD+R9, DVD+R DL or 8.5 GB Media.

 

DVD-18, holds around 17 080 000 000 bytes and that is 15.9 computer GB. DVD+R supports this format. Also called Double Sided Dual Layered.

 

* In the computer world is 1 KB data = 1024 bytes so 4 700 000 000 bytes / 1024 = 4 589 843KB / 1024 = 4482MB / 1024 = 4.37GB. See section 3.3 in the DVDDemystified FAQ here.

 

 

DVD+R/DVD+RW/DVD+R DL and DVD-R/DVD-RW exact sizes

DVD-R/DVD-RW = 4 706 074 624 bytes ( 4488 MB )

DVD+R/DVD+RW = 4 700 372 992 bytes ( 4482 MB )

DVD+R DL = 8 547 993 600 bytes ( 8152 MB )

 

Dual/Double Layer(8.5GB) write speeds

1x CLV = about 105 minutes

2.4x CLV = about 44 minutes

4x CLV = about 27 minutes

 

http://www.videohelp.com/dvd#dvdsizes

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