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DVD-Video Data Streams

To meet the Hollywood requirements, DVD-Video discs are designed to store audio visual sequences each comprising data streams of four types of data:

Data Type Streams Max Data Rate Coding
VIDEO 1 9.08 Mb/s MPEG-1 or MPEG-2 video and
video stills
AUDIO up to 8 6.144 Mb/s Several audio formats available
for both stereo & surround sound
SUBPICTURES up to 32 3.36 Mb/s 2 bits/pixel run length encoded
subpictures
NAVIGATION 1 - Program Chains to provide
interactivity

The maximum bit rate is 9.8 Mb/s for video, audio and subpictures (the overall maximum, including control information, being 10.08 Mb/s). For a playing time of 133 minutes, the average bit rate is 4.7 Mb/s.

The average video bit rate available depends on the number of audio streams and the encoding used, but should be close to 4 Mb/s for high quality results. Higher bit rates are often used to give even higher video quality.

To protect the copyright of Hollywood studios DVD-Video discs can be copy protected and can be region coded to play only in designated region(s). Copy protection comprises both digital and analogue methods.
 

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