DVD Software.
Copy, Backup, Clone, Record, Convert, Rip, Burn DVD

DVD stands for Digital Versatile Disc. Due to wide spreading of this disk as a media for high-quality video distribution, DVD is often called Digital Video Disc. But most people just use the abbreviation - DVD without specifying what V is. A DVD disc and a CD disc look the same (both 120mm diameter). But that's the end of the "sameness". It's essentially a bigger (not in size, but capacity), faster CD that can hold cinema-like video, better-than-CD audio, and computer data. DVD aims to encompass home entertainment, computers, and business information with a single digital format, eventually replacing audio CD, videotape, laserdisc, CD-ROM, and perhaps even video game cartridges. DVD has widespread support from all major electronics companies, all major computer hardware companies, and all major movie and music studios. With this unprecedented support, DVD has become the most successful consumer electronics product of all time in less than three years of its introduction.

DVD glossary

Variable Bit Rate (VBR)

Data compression technique that produces an output data stream varying between fixed minimum and maximum rates, with bandwidth decreasing or increasing depending on the complexity of the fixed rate incoming data.

Verification

Process of matching information on a copy to that on the original.

VIDEO CD

Special CD-Bridge implementation for MPEG-1 digital videoþ specified in the White Book.

Volume

A dismountable CD-ROM disc. A mountable sector address space consisting of a single set of sector addresses, usually as a continuous sequence of sectors, and containing one or more directory hierarchies.

Volume Descriptor

One sector containing information describing the volume. If multiple volume descriptors are present, then the volume descriptor set must be recorded in consecutively numbered logical sectors.

Volume Set

A collection of one or more volumes with identical volume set identification, on which a set of files is recorded.

Volume Space

The set of all logical sectors on a volume encompassing the system and data areas.

Variable Rate Bitstream (VBR)
The flow of data being processed on a DVD can be variable, depending on the complexity of the information being processed. Fast moving, dynamic scenes require a high data rate, while a static (non-moving) image requires a lower data rate.

Vertical Blanking Interval (VBI)
In analog television, these are the first few scan lines within a field that do not contain picture information. They appear as static at the top of the image. Since these scan lines are not used to convey picture information, they become the natural place to insert side information such as teletext and closed caption bitstreams.

Video CD (VCD)
A digital video disc format using MPEG1 encoding, normally playable on DVD players. Its VHS quality picture and limited shortage capacity prevented it from ever becoming fully caught on.

Video Manager
Top level menu linking multiple tiles from a common point.

Video Manager Information (VMGI)
Points to the various titles that comprise the disc volume and identifies disc side and content type.

Video Object (VOB)
Usually a group of pictures.

Video Tile Set (VTS)
A maximum of 10 files (in ISO 9660 structure) may comprise a video tile set. A Management File precedes each video tile set. Each file in turn is limited to 1 GByte in size.

Video Tile Set Information (VTSI)
Describes the nature of the VTS.

Video_TS
UDF filename used for video directory on disc volume. Files under this directory name contain pointers to the sectors on the disc that hold the program streams.

Volume Management Information
Identifies disc side and content type.

Volume Space
Collection of sectors that make up the volume. Not all sectors on the disc comprise the volume. Some near the inner and outer spiral are used as leaders.