DVD Mastering
Home Up Feedback Contents Search

DVD Mastering

Turning a movie into a DVD

When the decision has been made to create a DVD from a popular movie there are several steps that must be followed. It must be transferred from photographic film to a high quality video tape and specially formatted before it can be sold as a DVD.

bullet

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.

bullet

The video is then compressed by MPEG-2 formatting by a technique called variable bit rate encoding.

bullet

The audio tracks are then compressed and encoded by one or more of several means available. This permits the inclusion of surround sound information.

bullet

Dolby 5.1 (AC-3)

bullet

MPEG-2

bullet

DTS (Digital Theater Sound)

bullet

The video and audio tracks are then combined into a single bitstream via a process called multiplexing.

bullet

The resulting "image" is then transferred to a data tape master.

bullet

This master tape is then used to create a glass master which is used in replication to create the individual DVDs.

 

Thanks to everyone visiting this site.

Send email to doug@hometheaterinfo.com with questions or comments about this web site.
Copyright 1999-2017 Home Theater Info