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I
I Frame

I-MPEG
i.Link
iDVD
IEEE1394
IMG
Interlace, Interlaced, Interlacing, non-progressive
Intro
Inverse Telecine, IVTC
ISO
ISO 9660



I
I Frame
An I frame is encoded as a single image, with no reference to any past or future frames. Often video editing programs can only cut MPEG-1 or MPEG-2 encoded video on an I frame since B frames and P frames depend on other frames for encoding information.




I-MPEG
Intraframe MPEG. An unofficial variation of MPEG video encoding that uses only intraframe compression. I-MPEG is used by DV equipment.




i.Link
The Sony term for IEEE1394 or Firewire




iDVD
Apple's easy DVD creator. iDVD allows users an easy interface to create and burn their video, photos, or data to the dvd format. It allows users to create motion menus and chapter points simply by clicking the mouse. iDVD is like the little brother of DVD Studio Pro.




IEEE1394
The standard name for Firewire




IMG
IMG is an image/iso of a DVD, CD, Floppy. Burn it to a DVD or CD with DVD Decrypter or extract the content with Isobuster or mount it as a virtual DVD/CD unit with Daemon Tools.




Interlace, Interlaced, Interlacing, non-progressive
Each frame of a video picture is scanned twice. Firstly, all the odd lines are broadcast, then all the even lines are broadcast. Each set of odd/even lines is known as a field. Two fields therefore make up a frame. The point of doing this is to reduce flicker, and not increase bandwidth.




Intro
A video clip, often short, used at the start of a disc. Some common intros are THX, DTS, Dolby Digital sound bites with graphics or a countdown like the old movies. On a VCD you should ensure the length of the clip is at least 4 second for compliance with the specification.




Inverse Telecine, IVTC
Inverse telecine (IVTC) is when a codec takes a 29.97 frames per second interlaced NTSC video that has gone through the telecine process and reconstructs the original 24 frames per second progressive FILM video.




ISO
Besides the standards organization, this is a CD/DVD image format somewhat similar to a BIN/CUE image fileset, but the one single .ISO file contains both: the data and the CD/DVD layout information. These types of images can be burned with several CD /DVDburning programs.




ISO 9660
An ISO 9660 file system is a standard CD-ROM file system that allows you to read the same CD-ROM whether you're on a PC, Mac, or other major computer platform. The standard, issued in 1988, was written by an industry group named High Sierra. Almost all computers with CD-ROM drives can read files from an ISO 9660 file system.
There are several specification levels. In Level 1, file names must be in the 8.3 format (no more than eight characters in the name, no more than three characters in the suffix) and in capital letters. Directory names can be no longer than eight characters. There can be no more than eight nested directory levels. Level 2 and 3 specifications allow file names up to 32 characters long.

Joliet, an extension to ISO 9660 from Microsoft, allows the use of Unicode characters in file names (needed for international users) and file names up to 64 characters in length. whatis ISO










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