DVD Demystified

Application Details: DVD-Video and DVD-Audio
TABLE 6.40
DVD-Video
Features Not
Allowed in
DVD-Audio
TABLE 6.41
MLP Compression
325
To provide for longer playing times without compromising audio quality,
Meridian Lossless Packing (MLP) can be used to compress the data. MLP
removes redundancy from the signal to achieve a compression ratio of about
2:1 while allowing the PCM signal to be completely recreated by the MLP
decoder. DVD-Audio players are required to include an MLP decoder.
The other audio formats of DVD-Video (Dolby Digital, MPEG audio, and
DTS) are optional on DVD-Audio discs, although Dolby Digital is required
for audio content that has associated video. A subset of DVD-Video features
is allowed; those that are not are listed in Table 6.40. See Table 6.41 for compression
ratios and Table 6.42 for playing times.
Sampling rates and sizes can vary for different channels by using a predefined
set of two groups; as shown in Table 6.43. For mono and stereo configurations,
there is only one group. For other configurations, there are two
groups. Group 1 always has sampling rates and sizes that are higher than
or the same as group 2. Note that channel configurations 8 to 12 are the
same as 13 to 17, other than the channel groupings. Groups apply to PCM
streams and MLP streams.
Branching (multistory)
Camera angles
Parental management
Region control
User operation control
PCM Source Minimum Typical
44.1 kHz, 16 bits 25% 50%
48 kHz, 16 bits 10% 50%
96 kHz, 20 bits 40% 55%
96 kHz, 24 bits 38% 52%
192 kHz, 24 bits 43% 50%