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What is DVD, DVD Video and DVD Encryption Technology

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DVD, also known as Digital Video Disc or Digital Versatile Disc, is an optical disc storage media format, and was invented and developed by Philips, Sony, Toshiba, and Time Warner in 1995. Its main uses are video and data storage. DVDs are of the same dimensions as compact discs (CDs), but are capable of storing more than six times as much data.

There are three competing DVD Recording standards, DVD-/+R and 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 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 computer GB* DVDs (called DVD-5) and double sided 8.75 computer GB DVDs (called DVD-10 or DVD-9).

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 computer GB* DVDs (called DVD-5) and double side 8.75 computer GB DVDs (called DVD-10 or DVD-9).

DVD+R DL and DVD-R DL: DVD+R DL/DVD-R DL or called DVD+R9/DVD-R9 are a Dual Layer writeable DVD+R/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-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.

DVD-Video and DVD-Audio discs refer to properly formatted and structured video and audio content, respectively. Other types of DVDs, including those with video content, may be referred to as DVD Data discs.

DVD Video

DVD Video is a standard for content on DVD media. The format went on sale in Japan on November 1, 1996, in the United States on March 1, 1997, in Europe on October 1, 1998 and in Australia on February 1, 1999. DVD became the dominant form of home video distribution in Japan when it first went on sale in 1996, but did not become the dominant form of home video distribution in the United States until June 15, 2003, when weekly DVD Video in the United States rentals began outnumbering weekly VHS cassette rentals, reflecting the rapid adoption rate of the technology in the U.S. marketplace.

Although many resolutions and formats are supported, most consumer DVDs use either 4:3 or anamorphic 16:9 aspect ratio MPEG-2 video, stored at a resolution of 720/704×480 (NTSC) or 720/704×576 (PAL) at 29.97, 25, or 23.976 FPS. Audio is commonly stored using the Dolby Digital (AC-3) or Digital Theater System (DTS) formats, ranging from 16-bits/48 kHz to 24-bits/96 kHz format with monaural to 6.1-channel "Surround Sound" presentation, and/or MPEG-1 Layer 2 and/or LPCM Stereophonic. Although the specifications for video and audio requirements vary by global region and television system, many DVD players support all possible formats. DVD Video also supports features such as menus, selectable subtitles, multiple camera angles, and multiple audio tracks.

DVD Video contains two folders, named "VIDEO_TS" and "AUDIO_TS". VIDEO_TS folder contains all DVD video and AUDIO_TS folder contains nothing, and VIDEO_TS folder contains three types of file: Unencrypted IFO, Unencrypted BUP, and Encrypted VOB. You cannot Copy VOB files to other places such as: hard disk, USB, etc. If you plan to backup your DVD full content to hard disk, you need the 3rd-party software - WinX DVD Ripper Platinum.

DVD Encryption Technology

DVD Copy Protection: It's a blanket term for various methods of copy protection for DVDs. Such methods include DRM, DVD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the DVD, physical errors, and bad sectors. There are a huge amount of protection schemes rely on breaking compliance DVD standards, leading to playback problems on some devices.

Content Scramble System (CSS Encryption): It's a Digital Rights Management (DRM) scheme used on almost all commercially produced DVD-Video discs. It utilizes a proprietary 40-bit stream cipher algorithm. The system was introduced around 1996 and has subsequently been compromised. The CSS key sets are licensed by the DVD Copy Control Association to manufacturers who incorporate them into products such as DVD movie releases, drives & players. Most DVD players are equipped with a CSS Decryption module. CSS key is a collective term for authentication key, disc keys, player keys, title keys, secured disk key set, and/or encrypted title keys.

Sony ARccOS Protection: Also Advanced Regional Copy Control Operating Solution, is a copy-protection system made by Sony that is used on some DVDs. Designed as an additional layer to be used in conjunction with Content Scramble System (CSS), the system deliberately creates corrupted sectors on the DVD, which cause copying software to produce errors.

Disney DVD Copy Protection: It stops to make backup of the Disney DVD movies or play them on iPod, iPad, iPhone, etc. And it is not playable on DVD player which is not matching for the protected DVD.

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WinX HD Video Converter Deluxe: Built in hundreds of A/V codecs and equipped with Photo Slideshow Maker and Website Video Downloader functions. As all-in-one HD Video Converter software, it helps you transcode HD video formats like convert AVCHD M2TS to MKV, convert Blu-ray to MKV, MKV to MP4, etc. Moreover, it is embedded with numerous profile settings for Apple, Samsung, HTC, Sony, Microsoft portable devices, iOS, Android, Windows mobiles. Convert MKV to iPhone, convert MKV to iPad are good examples.

WinX HD Video Converter for Mac: Professional HD Video converter for converting HD Videos on Mac OS, provides the perfect solution to convert Blu-ray videos and videos from HDTV and HD camcorders, like JVC, Panasonic, Sony and Cannon to other formats. Also act as a Mac screen and camera video recorder, slideshow maker, YouTube video downloader, etc. Running perfectly on Mac OS X Mavericks/Mountain Lion/Tiger/Leopard/Snow Leopard.

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DVD - DVD, also known as Digital Video Disc or Digital Versatile Disc, is an optical disc storage media format, and was invented and developed by Philips, Sony...

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