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.
Each frame of Red Book audio data consists of 588 channel bits. Only 192 bits are used to store the audio stream
| Field | User bytes | Comments |
|---|---|---|
| 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 |
| TOTAL | 33 bytes |
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
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 |