Ulead 1.0 - Manual (Page 38)

2—16 SpruceUp User’s Guide
Spruce Technologies has a freely distributable DVD player called Syzygy™ that can be
included with the titles. Based on InterVideo Inc’s WinDVD™2000, this player allows
systems without video playback capabilities to play the title. The player loads into RAM only
– nothing is written to your hard disc, and the whole process is transparent to the person
playing the disc. Find more information on DVDonCD by visiting www.webdvd.org and
clicking on the DVDonCD link.
SpruceUp interfaces with a number of CD-RW drives, allowing titles to be written directly to
a disc without using a third party’s software. Check our web site for updates if SpruceUp
does not recognize your device.
Other Drive Technologies
A DVD title can actually be distributed on almost any disc drive technology. The
requirements are that it be fast enough to read the data in real-time, big enough to hold the
files, and that whoever you want to play the title back has a compatible drive. These can be
hard drives, Iomega Jaz drives, etc.
Replicators and DVD-R
DVD replication houses require you to provide the title on DLT (Digital Linear Tape). There is
a wide variety of DVD media available to the replicators, ranging from a single-sided single-
layer disc with 4.7GB of storage to a dual-sided dual-layer disc with 17.08GB of storage.
Separate tapes are required for each layer and/or side of a disc.
DVD-R drives currently have 3.95GB and 4.7GB media available. Titles made on a DVD-R
drive typically work in both set-top DVD players and computer DVD-ROM drives. Even when
the final title is to be duplicated at a replication house, being able to make test DVDs can be
very useful.
DVD-Video File Details
The following gets pretty detailed, but can be useful when trying to understand exactly what
files are required to make a DVD-Video disc. This is especially important when making a
DVD-ROM title where you add extra files to the disc.
The heart of a DVD-Video title is the Video_ts folder, which is at the root level of most DVD
titles. This folder contains all assets for the title, including the encoded video and audio,
menus, subtitles, and other pieces. The DVD compile process creates the files found in the
Video_ts folder.
Video_ts Files
The DVD Specification defines the file names found in the Video_ts folder; they are
(mostly) the same on every title, and always follow an "8.3" naming convention.
Video_ts.ifo – Contains the major information for the disk, such as its capacity.
Video_ts.bup – A backup of the .ifo file.
Vts_01_0.ifo – Contains the major information for the title, such as its name. A disc can
have multiple titles. The “01” in this file name indicates it is title one.
Vts_01_0.bup – A backup of the .ifo file.
Vts_01_0.vob – This file contains the menus (including the URL entries) for title one.
Vts_01_1.vob – This file contains the media (video, audio, and subtitles) for title one. The
DVD Specification sets 1GB as the maximum file size. Since the media information often
exceeds this limit, you will find multiple files with the same name but with the last digit
incremented (Vts_01_2.vob and so on).