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.:::. DVD/VCD/SVCD specification .:::. { Knowledge Base } .:::.


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AuthorMessage
SuRi avatar
Posted: Sun Jun 13, 2010 17:56
Author: Site FriendTrue LoveETRG
MPEG
The MPEG standards are an evolving set of standards for video and audio compression and for multimedia delivery developed by the Moving Picture Experts Group (MPEG).
MPEG-1 was designed for coding progressive video at a transmission rate of about 1.5 million bits per second. It was designed specifically for Video-CD and CD-i media. MPEG-1 audio layer-3 (MP3) has also evolved from early MPEG work.
MPEG-2 was designed for coding interlaced images at transmission rates above 4 million bits per second. MPEG-2 is used for digital TV broadcast and DVD. An MPEG-2 player can handle MPEG-1 data as well.

DVD
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 computer GB* DVDs(called DVD-5) and double sided 8.75 computer GB* 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 computer GB* 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 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-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 image
Video DVD image is a directory in your hard disk, it contains the whole dvd file structures, includes VIDEO_TS and AUDIO_TS dirctory, and IFO, BUP, VOB as well as the files in your dvd disc.

VCD
VCD stands for 'Video Compact Disc' and basically it is a CD that contains moving pictures and sound. If you're familiar with regular audio/music CDs, then you will know what a VCD looks like. A VCD has the capacity to hold up to 74/80 minutes on 650MB/700MB CDs respectively of full-motion video along with quality stereo sound. VCDs use a compression standard called MPEG to store the video and audio. A VCD can be played on almost all standalone DVD Players and of course on all computers with a DVD-ROM or CD-ROM drive with the help of a software based decoder / player. It is also possible to use menus and chapters, similiar to DVDs, on a VCD and also simple photo album/slide shows with background audio. The quality of a very good VCD is about the same as a VHS tape based movie but VCD is usually a bit more blurry.

SVCD
SVCD stands for "Super VideoCD". A SVCD is very similiar to a VCD, it has the capacity to hold about 35-60 minutes on 74/80 min CDs of very good quality full-motion video along with up to 2 stereo audio tracks and also 4 selectable subtitles. A SVCD can be played on many standalone DVD Players and of course on all computers with a DVD-ROM or CD-ROM drive with the help of a software based decoder / player. It is also possible to use menus and chapters, similiar to DVDs, on a SVCD and also simple photo album/slide shows with background audio. The quality of a SVCD is much better than a VCD, especially much more sharpen picture than a VCD because of the higher resolution. But the quality depends how many minutes you choose to store on a CD, less minutes/CD generally means higher quality.

AVI
Audio Video Interleave (AVI) format is the standard Windows format for audio/video data.

Codec
An abbreviation for compressor/decompressor. Software or hardware used to compress and decompress digital media.

frame rate
The number of video frames displayed per second. Higher frame rates generally produce smoother movement in the picture.



DVD VCD SVCD specification
DVD specification

NTSC:
Horzontal width: 720
Vertical height: 480
Frames per second: 29.97
Colour depth: 24 or 32 bits

PAL:
Horzontal width: 720
Vertical height: 576
Frames per second: 25
Colour depth: 24 or 32 bits
SVCD specification

NTSC:
Horzontal width: 480
Vertical height: 480
Frames per second: 29.97
Colour depth: 24 or 32 bits

PAL:
Horzontal width: 480
Vertical height: 576
Frames per second: 25
Colour depth: 24 or 32 bits
VCD specification

NTSC:
Horzontal width: 352
Vertical height: 240
Frames per second: 29.97
Colour depth: 24 or 32 bits

PAL:
Horzontal width: 352
Vertical height: 288
Frames per second: 25
Colour depth: 24 or 32 bits

The DVD sizes can be a bit confusing. There are basicly 4 different DVD Sizes,
DVD-5, holds around 4 700 000 000 begin_of_the_skype_highlighting              4 700 000 000      end_of_the_skype_highlighting 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 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.

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 )


DVD File/Folder Structure
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.
=================================================================================
Folder Files Explanation
AUDIO_TS (undefined) DVD Audio
VIDEO_TS VIDEO_TS.BUP
VIDEO_TS.IFO The first video play item, IFO, usally a copyright notice or a menu
VIDEO_TS.VOB The first video play item, VOB
VTS_01_0.BUP
VTS_01_0.IFO Title 01, IFO, usually the main movie
VTS_01_0.VOB Title 01, VOB 0, the menu for this title
VTS_01_1.VOB Title 01, VOB 1, the video for this title
VTS_01_2.VOB Title 01, VOB 2, if larger than 1 GB it will be split into several vobs
VTS_01_3.VOB Title 01, VOB 3
VTS_01_4.VOB Title 01, VOB 4, up to 10 (0-9) VOB files if necassary
...... ......
VTS_99_9.VOB Up to 99 (1-99) titles with max 10 (0-9) VOB files each
EMUworld avatar
Posted: Mon Jun 14, 2010 09:22
Author:
Bingo!!!...real nice post once again..
Keep them coming m8..
c017.gif
karakurachow avatar
Posted: Tue Jun 15, 2010 10:16
Author: Site Friend
Thanks man

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