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DVD stands for Digital Versatile Disc. Due to wide spreading of this disk as a media for high-quality video distribution, DVD is often called Digital Video Disc. But most people just use the abbreviation - DVD without specifying what V is. A DVD disc and a CD disc look the same (both 120mm diameter). But that's the end of the "sameness". It's essentially a bigger (not in size, but capacity), faster CD that can hold cinema-like video, better-than-CD audio, and computer data. DVD aims to encompass home entertainment, computers, and business information with a single digital format, eventually replacing audio CD, videotape, laserdisc, CD-ROM, and perhaps even video game cartridges. DVD has widespread support from all major electronics companies, all major computer hardware companies, and all major movie and music studios. With this unprecedented support, DVD has become the most successful consumer electronics product of all time in less than three years of its introduction.



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DVD Cloner

DVD-CLONER designed to backup your favorite DVD movies. Have you stored your DVD movies properly? According to a survey among movie fans, we find that half of them can't keep their movies more than 3 years due to the following reasons:

  • 24% accidentally damaged by children or pets
  • 25% naturally worn or damaged by defective DVD player
  • 25% lost
  • 13% become unusable itself or by unfavorable weather
  • 13% others

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DVD Creating Tool

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Region Codes - DVD's Dirty Secret

From Robert Silva
http://hometheater.about.com/cs/dvdlaserdisc/a/aaregioncodesa.htm

Not All DVDs Play In All DVD Players
Nothing has impacted the home entertainment world quite like DVD. Players and movies have been flying off the shelves worldwide as prices keep falling and consumers keep buying. With superior picture and audio performance DVD has spurred growth in home theater exponentially in recent years. Entire rooms in many homes are now reserved just for the enjoyment of home theater. However, along with DVD's worldwide success, comes its dirty little secret: region coding (also referred to as region lock).
The DVD world is basically divided into six regions. To keep it simple, this means that DVD players and DVDs are labeled for operation on within a specific geographical region in the world. For example, the U.S. is in region 1. This means that all DVD players sold in the U.S. are made to region 1 specifications.

As a result, region 1 players can only play region 1 discs. That's right, the DVDs themselves are encoded for a specific region. On the back of each DVD package, you will a find a region number (1 thru 6).
The geographical regions are as follows:

REGION 1 -- USA, Canada
REGION 2 -- Japan, Europe, South Africa, Middle East, Greenland
REGION 3 -- S.Korea, Taiwan, Hong Kong, Parts of South East Asia
REGION 4 -- Australia, New Zealand, Latin America (including Mexico)
REGION 5 -- Eastern Europe, Russia, India, Africa
REGION 6 -- China
REGION 0 or REGION ALL -- Discs are uncoded and can be played Worldwide, however, PAL discs must be played in a PAL-compatible unit and NTSC discs must be played in an NTSC-compatible unit.

The end result is that DVDs encoded for regions other than Region 1 cannot be played on a region 1 DVD player, also, players marketed for other regions cannot play region 1-stamped DVDs.

Why is this, you ask? According to what the public is being told is that this is a tool to protect copyright and film distribution rights (in other words, movie studio profits). You see, movies are released in theaters in different parts of the world at different times throughout the year. That Summer blockbuster in the U.S. may end up being the Christmas blockbuster overseas. If that occurs, the DVD version of the movie may be out in the U.S. while it is still showing in theaters overseas. In order to preserve the financial integrity of the theatrical distribution of a particular film, it is not possible (under normal conditions) to have a friend in the U.S. send a DVD copy of the film to the country where it is in theatrical release and be able to play the DVD on a player there.

Depending on who you are, region coding can be considered a blessing or a curse. If you are movie studio executive, this is great, not only do you reap maximum profits from the theatrical releases, but also from the DVD releases for your film. If you are a consumer wanting to see a movie that is available on DVD in your relative's country but not in yours, you may have to wait quite a while.

However, another possible rationale for region coding is beginning to emerge, possible price-fixing of DVDs depending on region. Although this is yet to be legally proven in court, if proven to be true, Australian and European courts may just put the heat on Hollywood and manufacturers to discontinue region coding as a marketing practice.

In addition, for those consumers that live in Europe, Australia, and Asia, there is an abundant market for so-called Code Free DVD players, which are essentially modified versions of stock DVD players in which the region coding function has been disabled. With the magic of mail-order and the Internet, these players are widely available, even if not totally legal. For the fortunate owners of these players, DVDs can be purchased from any region. However, as a reaction to the popularity of Code-Free DVD players, "Hollywood" has instituted another layer of coding on region1 DVDs called RCE (Regional Coding Enhancement) which prevents selected region1 DVDs from playing even on Code-Free DVD players.

There is additional hitch in this madness. Since the world is also divided into the NTSC, PAL, and SECAM video systems ( as outlined in my previous article: Who's Your PAL? ), the consumer still needs a multi-system TV to access DVDs pressed in one of these systems. Although this is difficult in the U.S. market, where all video is based on the NTSC system, many consumers in Europe and some other parts of the world do own multi-system TVs that can view DVDs pressed in either NTSC or PAL.

My Perspective On DVD Region Coding
I can see the need for some region coding in order to protect movie release dates, but if issues such as price-fixing of DVD product is also involved, Hollywood may end up being in deep trouble on this one. With the increase in communication and travel, information and entertainment can be accessed just about anywhere at anytime and perhaps Hollywood would best be served by releasing films and videos at the same time everywhere. Not only would consumers be better served, but the cost of region coding and the need for the aftermarket Code-Free DVD player would be eliminated.
Also, I realize it's nice to purchase the DVD version of the latest blockbuster just six months after theatrical release. It is a minor inconvenience to wait another month or so if it means the film is still in theatrical release somewhere else in the world.

If the movie is worthy, fans will wait for the DVD. I doubt if the sales of blockbuster DVD releases, such as Star Wars: Episode II, Lord Of The Rings, etc... suffer because we had to wait over a year to get it. I, for one, will always be in line for those major DVD releases.
In conclusion, the only entities that seem to be currently benefiting are the movie studios and the marketers of Code-Free DVD players. Under this current system, my vote is for the marketers of the Code-Free players. Even the International Space Station has Code-Free DVD players (for obvious practical reasons).

For a list of dealers that sell modified Code-Free DVD players, check the first six listings in the "Elsewhere On The Web" linkbox on the right side of this page (Guide Note: The dealer listings are purely informational, I do not vouche for the quality of the products and services offered).

Now that you know about DVD region coding, that isn't only dirty little secret of DVD. There also the issue of its anti-copy encoding technology, but that is another story....


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Pocket DVD Wizard

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There are 4 standard formats. D10 and D18 are not as common.

A DVD-5 (single sided) DVD-Video disc will hold nominally 133 minutes of high quality MPEG-2 encoded video, together with three surround-sound audio channels and four subtitle channels. (Without video compression one DVD-5 disc would hold only about 3 minutes of video).

A DVD-9 (dual layer) disc increases the playing time to 240 minutes of continuous video.

A DVD-10 (double sided) disc will hold a nominal 133 minutes on each side (ie 266 minutes in all), but the disc needs to be turned over to play the other side.

A DVD-18 (dual layer, doubled sided) disc can hold 240 minutes on each side and the disc also needs to be turned over to play the other side.

Most DVD is D9 or D5 format. DVD-Cloner can clone D9 to just ONE DVDr/rw disc (D5 format) without evident losing.



DVD Files and Directories

The VOBs and other data are contained in files in the VIDEO_TS directory. The table below gives an example of these files for a single title set disc.

Filename Description
VIDEO_TS.IFO
VIDEO_TS.VOB
VIDEO_TS.BUP
VMGI file (Video Manager Information)
VOB file for VMG Menu
VMGI backup file
VTS_01_0.IFO
VTS_01_0.VOB
VTS_01_0.BUP
VTSI file (VTS Manager Information)
Video Object Set for VTS Menu
VTSI backup file
VTS_01_1.VOB
VTS_01_2.VOB
. . . . . .
VTS_01_n.VOB
First Title Video Object Set file
Second Title Video Object Set file
. . . . . .
Last Title Video Object Set file (n not more than 9)

The audio, video and subpictures for the movie are contained in up to 9 Title VOB files, where each file is not more than 1GB in size. For a DVD-5 there will be no more than 5 Title VOB files, for a DVD-9 a full 9 will be required if the disc is full.

The VTS*.* files can be repeated for each VTS and will be named VTS_02*.*, VTS_03*.* etc. Each VTS will have one each of the .IFO and .BUP files plus one or more .VOB files.

 

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