 | The video tape is scanned to identify scene changes, insert pan and scan
codes (not in any DVDs I buy), enter closed captioning information and optionally mark
scenes for exclusion by means of parental lockout in inclusion for DVDs with alternate
versions or ratings available.
|
| The video is then compressed by MPEG-2 formatting by a technique called variable
bit rate encoding.
|
| The audio tracks are then compressed and encoded by one or more of
several means available. This permits the inclusion of surround sound information.
 | Dolby 5.1 (AC-3)
|
| MPEG-2
|
| DTS (Digital Theater Sound)
|
|
| The video and audio tracks are then combined into a single bitstream via
a process called multiplexing.
|
| The resulting "image" is then transferred to a data tape
master.
|
| This master tape is then used to create a glass master which is used in
replication to create the individual DVDs.
|
