Video Tech Glossary, DVD Glossary, VCD Glossary, SVCD Glossary

TBC
See Time Base Corrector

Telecine
Cinematic film movies are shot at 24 progressive frames per second speed. A Frame is the smallest unit of a 24 fps FILM format. NTSC video is a "field-based" format of 59.94 fields per second. A Field is the smallest unit in interlaced video format. 2 fields make up 1 frame. So, this 59.94 fields per second equals 29.97 frames per second. 1 second in FILM (24 frames) is NOT equal to 1 second in NTSC Video (29.97 frames).

To be able to match the speed of an NTSC Video, conversion from a FILM format to an NTSC Video format undergoes a process called 2:3 pulldown or TELECINE. This process, in simplest terms, means "to add 6 frames so that a 24 fps becomes 30fps which is close to 29.97 fps (another trick is used to get to 29.97). Picture of the process - doom9.org

Telesync
A video recorded in a cinema but usually on an expensive camera and a seperate audio source or direct audio connection (so the audience cannot be heard). The result is a video generally of very good quality.

tgpo
Short for The Great Pat-o. He is the coolest guy ever.

Time Base Corrector
A hardware device used to remove or mask variations in the video synchronizing signals, which can result in "skewing" and other distortions in the video image generated by unavoidable mechanical inaccuracies in helical scan recorders. This is accomplished by automatically delaying the video signal so that each line starts at the proper time. In capturing a TBC is used to 'clean up' analog tape problems and may assist in the capture of old VHS tapes when used betwee a VCR and capture card. Hardware TBCs can be expensive.

Time Code
Information recorded with audio or video to indicate a position in time. Usually consists of values for hours, minutes, seconds, and frames. Also called SMPTE time code. Some DVD-Video material includes information to allow the player to search to a specific time code position.

Title
A DVD 'Title' is generally a logically distinct section of a DVD-Video . For example the main feature film on a DVD might be Title 1, a behind-the-scenes documentary might be Title 2 and a selection of cast interviews might be Title 3. There can be up to 99 Titles on any DVD. dvd.sourceforge.net

TMPGenc
A popular, low cost MPEG-1 and MPEG-2 encoder commonly used to encode VCD , SVCD , and DVD . Free trial is available.

Track
1) A distinct element of audiovisual information, such as the picture, a sound track for a specific language, or the like. DVD-Video allows one track of video (with multiple angles), up to 8 tracks of audio, and up to 32 tracks of subpicture; 2) one revolution of the continuous spiral channel of information recorded on a disc.

Trailer
A relatively short video that is either used to preview a longer feature film, a television program, food, a sound system or other advertizing. Trailers often come before a main feature movie as an intro .

Transcoding
On this site generally another name for encoding .

A more technical term would be "The reformatting of content, without changing the source, to another type of content - most often of a different format than the original (but does not have to be)"

Transport Stream
The Input of the Transport Stream Multiplexer and the Output of the Transport Stream Demultiplexer are the Video and Audio Packetized Elementary Streams (PES)
MPEG-2 Transport Stream:
may contain one or multiple programs (even with independent time-base); is suitable to no error-free transmision; has a fixed length packet structure.

Transport Packet (188 bytes)
Header: 4 bytes

Payload: 184 bytes

Transport-Stream Packet and ATM transmission
The packet length is the output of a compromise: on one hand longer the packet, lower the overhead; on the other hand shorter the packet, easier the streams syncronization.
The 188 bytes transport stream packet can be easily divided into 4 ATM cells. Each ATM cell is composed by 5 bytes of header + 1 byte for the Adaptation Layer and 47 bytes for the payload (=188/4). So a transport stream can be transmitted through ATM with the minimum overhead.

Possible operations on the Transport-Streams
Program selection and demultiplexing of its elementary streams.
Recomposition of one or more Transport-Streams into one or more different Transport-Streams.
Extraction of a given Program from a Transport-Stream and production of a Program-Stream.
Transformation of a Program-Stream into a Transport-Stream.

TSCV
A GUI program frontend to VCDimager created by TTool. The program was the first to provide a full range of VCD and SVCD authoring but development stopped in 2002. Similar in functionality to VCDeasy . TSCV Site