Red Book

Red Book

White Book (a derivative of Red Book) is a constant-rate linear format. Therefore the total storage time is fixed. DVD on the other hand is a non-linear medium permitting seamless playback of jumps. It acheives this via a track buffer which maps DVD's constant 11.08 mbit/sec user rate to a variable rate stream.

Red Book frame breakdown of user bits:

Each frame of Red Book audio data consists of 588 channel bits. Only 192 bits are used to store the audio stream

FieldUser bytesComments
subcode 1 8 bits of subcode channel data
audio data 24 6 samples * 2 channels * 2 bytes/sample
FEC 8 RS rate of 3/4
TOTAL33 bytes


frame channel bits:

Convert 33 user bytes into 8/14 code:

1 symbol/byte * 33 bytes * 17 channel bits/symbol = 561 bits Add 24 bits for the sync word + 3 merge bits = 588 bits

Bit rate calculation:

98 frames/sector * 75 sectors/sec * 588 channel bits/frame = 4,321,800 bits/sec

Channel rate 4,321,800 bits/sec
after channel demod 1,940,400
subcode rate 58,800
error correction rate (FEC) 470,400
user rate after FEC removal 1,470,000



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