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What is DVD?
DVD Sizes, DVD-5, DVD-9 DVD Write and read speeds Download DVD Samples DVD-Video Technical Info DVD File/Folder structure Video file comparison More info DVD stands for Digital Versatile/Video Disc, DVDR stands for DVD Recordable and DVDRW for DVD ReWriteable. If you're familiar with regular audio/music CDs or regular DVD-Video discs, then you will know what a recordable DVD looks like. A recordable DVD stores up to 2 hours of very good quality DVD-Video, including several audio tracks in formats like stereo, Dolby Digital or DTS and also advanced menu systems, subtitles and still pictures that can be played by many standalone DVD Players and most computer DVD-ROMs. If you choose to lower the video quality it is possible to store several hours video on a recordable DVD using low bitrates and low resolution with video quality more like VHS, SVHS, SVCD, CVD or VCD. It is also possible to have up to 4.37* GB ordinary data or mix DVD-Video and data on a recordable DVD that can be played by most computer DVD-ROMs. There are three competing DVD Recording standards, DVD-R/DVD-RW and DVD+R/DVD+RW have pretty similiar features and are compatible with many standalone DVD Players and most DVD-ROMs while DVD-RAM has less DVD Player and DVD-ROM compatibility but better recording features. DVD-R and DVD-RW DVD-R was the first DVD recording format released that was compatible with standalone DVD Players. DVD-R is a non-rewriteable format and it is compatible with about 93% of all DVD Players and most DVD-ROMs. DVD-RW is a rewriteable format and it is compatible with about 80% of all DVD Players and most DVD-ROMs. DVD-R and DVD-RW supports single side 4.37 GiB* DVDs(called DVD-5) and double sided 8.75 GiB* DVDs(called DVD-10). These formats are supported by DVDForum. DVD+R and DVD+RW DVD+R is a non-rewritable format and it is compatible with about 89% of all DVD Players and most DVD-ROMs. DVD+RW is a rewritable format and is compatible with about 79% of all DVD Players and most DVD-ROMs. DVD+R and DVD+RW supports single side 4.37 GiB* DVDs(called DVD-5) and double side 8.75 computer GB* DVDs(called DVD-10). These formats are supported by the DVD+RW Alliance. 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 GiB* (called DVD-9) and dual layered double sides 15.9* GiB (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 GiB* (called DVD-9) and dual layered double sides 15.9* GiB (called dvd-18). DVD-RAM DVD-RAM has the best recording features but it is not compatible with most DVD-ROM drives and DVD-Video players. Think more of it as a removable hard disk. DVD-RAM is usually used in some DVD Recorders. This format is supported by DVDForum. Read our DVD Writers and Recorders list and read also our DVD Players Compatibility list to see what types your standalone DVD Player supports. You find more detailed comparisons between the formats in the more info section here.
The DVD sizes can be a bit confusing. There are basicly 4 different DVD Sizes, DVD-5, holds around 4 700 000 000 bytes and that is 4.37 GiB 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 GiB. 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 GiB. 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 GiB. DVD+R supports this format. Also called Double Sided Dual Layered. * GiB = 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 )
Single Layer(4.7GB) write speeds 1x (CLV) = about 58 minutes 2x (CLV) = about 29 minutes 2.4x (CLV) = about 24 minutes 4x (CLV) = about 14.5 minutes 6x (CLV/ZCLV) = about 10-12 minutes 8x (PCAV/ZCLV) = about 8-10 minutes 12x (PCAV/ZCLV) = about 6.5-7.5 minutes 16x (CAV/ZCLV) = about 6-7 minutes Dual/Double Layer(8.5GB) write speeds 1x CLV = about 105 minutes 2.4x CLV = about 44 minutes 4x CLV = about 27 minutes Single Layer (4.7GB) read speeds 1x read speed is 1.321MB/s = ~56 minutes 6x CAV (avg. ~4x) read speed is max 7.93MB/s = ~14 minutes 8x CAV (avg. ~6x) read speed is max 10.57MB/s = ~10 minutes 12x CAV (avg. ~8x) read speed is max 15.85MB/s = ~7 minutes 16x CAV (avg. ~12x) read speed is max 21.13MB/s = ~5 minutes * write speed time and read speed time is not the same because writing requires some extra steps and also does the faster writing above 6x usually use lower write speeds for some parts of the dvd. 4x DVD speed = 36x CD speed. See section 4.2 in the DVDDemystified FAQ here.
DVD-VCD is basicly a VCD authored on a DVD. DVD supports the VCD resolution but the audio has to be resampled to 48 khz. If the audio is resampled to 48 khz it is standard DVD-Video. Read more here how to make a such. DVD-SVCD is basicly a SVCD authored on a DVD. DVD do not supports the SVCD resolution but it may anyway work and the audio has to be resampled to 48 khz like the DVD-VCD. Read more here how to make a such and download a DVD Sample including a DVD-SVCD here. DVD-MP3 is MP3s burned on a DVD but very few MP3 capable standalone DVD Players supports it because most Players verify DVD as DVD-Video only. Check our DVD Players list for compatibility. DVD-ISO is MPEG ,MPG, VOB files burned on a DVD without any DVD Authoring(making the vob,ifo files) but very few standalone DVD Players supports it because most Players verify DVD as DVD-Video only. Check our DVD Players list for compatibility. What is miniDVD / cDVD then? Read here on the miniDVD/cDVD page.
Explanation: . BUP = Backup files of the IFO files. . IFO = The IFO files includes information such as chapters, subtitle tracks and audio tracks. . VOB = The VOB files contains the actual video,audio,subtitles and menus.
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