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DVD is very common in nowerdays, most movies are of this format,  but some people may not know it exactly, today we just talk about relevant information about it.

DVD Overview:

DVD is a short for Digital Versatile Disc, it is an optical disc storage format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. It offers higher storage capacity than Compact Discs(CD), Video Compact Disc(VCD), SuperVideoCD(SVCD) while having the same dimensions.

A standard video DVD contains a VIDEO_TS folder, and many .bup, .ifo, .vob files under the folder.  Vob files contians the content of the DVDs, you can directly play the single vob files. IFO files is like a guide, it tells the DVD player or play software how to play the DVD. While the bup files are backups of IFOs.

DVD Recording Formats:

All DVDs come from blank DVD discs, people add data on it and make it readable, we called this process DVD recording or DVD clone. There are three DVD Recording standards, DVD-R/DVD-RW, DVD+R/DVD+RW and DVD-RAM.

DVD-R/DVD-RW and DVD+R/DVD+RW have pretty similar 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 was the first DVD recording format released that was compatible with standalone DVD Players, it’s a non-rewriteable format and it is compatible with nearly all DVD Players and most DVD-ROMs.
DVD-RW is a rewriteable format.
DVD-R and DVD-RW supports single side 4.37 GB* DVDs(called DVD-5) and double sided 8.75 GB* DVDs(called DVD-10).

DVD+R is a non-rewritable format, while DVD+RW is a rewritable format.  Both of them support single side 4.37 GB* DVDs(called DVD-5) and double side 8.75 computer GB* DVDs(called DVD-10).

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

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

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.

DVD Size:

DVD-5 is the most common DVD Media, often called 4.7 GB Media. It is actually 4.37 GB(1 kbyte is 1024 bytes, not 1000 bytes we usually thought) . DVD+R/DVD+RW and DVD-R/DVD-RW supports this format. Also called Single Sided Single Layered.

DVD-10,  also called Double Sided Single Layered.  It is 9.4G(8.75 GB actually) . DVD+R/DVD+RW and DVD-R/DVD-RW supports this format.

DVD-9, also called Single Sided Dual Layered. It supports around 8 540 000 000 bytes and that is 7.95 GB actually . This media is called DVD-R9, DVD-R DL, DVD+R9, DVD+R DL or 8.5 GB Media.

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

Region codes and countries

The DVD region code identifies a DVD’s compatibility with the players typically sold in a particular region. Usually certain DVD players only play DVDs of its region.

Region code



“worldwide”. Region 0 is not an official setting also referred to as “Region Free”


United States, Canada, Bermuda, U.S. territories


Europe (except Russia, Ukraine, and Belarus), Middle East, Egypt, Japan, South Africa, Swaziland, Lesotho, Greenland, French Overseas departments and territories


Southeast Asia, South Korea, Republic of China (Taiwan), Hong Kong, Macau


Mexico, South America, Central America, Caribbean, New Zealand, Australia, Papua New Guinea and much of Oceania


India, Nepal, Afghanistan, Sri Lanka, Ukraine, Belarus, Russia, Pakistan, Africa (except Egypt, South Africa, Swaziland, and Lesotho), Central and South Asia, Mongolia, North Korea




International venues such as aircraft, cruise ships, etc.


Region ALL discs have all eight flags set, allowing the disc to be played in any locale on any player.

DVD Protections:

Most common DVDs have copy protections, the most common ones are CSS, Region, RCE, Sony ARccOS, PuppetLock. These protections forbade users to make copy or any operation like DVD ripping, dvd convertion to the original Data.

So if you want to make DVD copy of origianl DVDs, or convert DVDs to iPad, iPhone, mp4, avi or other foramts, you need specail tools, Longo DVD Soft provide users the easiest tool to do so. With Longo DVD Copy( Longo Mac DVD Copy), users can easy copy DVDs to hard drive to enjoy movies there or burn DVDs to blank DVD discs to enjoy over the home DVD players.

With Longo DVD Ripper(Longo Mac DVD Ripper), you can easily rip DVDs to iPad, iPhone, Kindle Fire, PS3,  Apple TV, mp4, avi and other formats quickly.


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25 Comments  comments 

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  24. - DVD Copy protections

    [...] play DVDs of region 2/3/4. For more region information, please go to our another article DVD Regions [...]

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