BitComet Support Team's BLOG

QuickTime is a multimedia framework developed by Apple Inc. capable of handling various formats of digital video, media clips, sound, text, animation, music, and several types of interactive panoramic images. Available for Classic Mac OS, Mac OS X and Microsoft Windows operating systems, it provides essential support for software packages including iTunes, QuickTime Player (which can also serve as a helper application for web browsers to play media files that might otherwise fail to open) and Safari.

You can use mpcstar to open files with this suffix. http://www.mpcstar.com/

The file name extension .com has been used in various computer systems for different purposes. Originally, the term stood for "Command file" and was a text file containing commands to be issued to the operating system. This was the practice on many of the Digital Equipment Corporation mini and mainframe computer systems going back to the 1970s.

With the introduction of microcomputers this use of files ending with the extension .com changed. In MS-DOS and compatible DOSes, and in 8-bit CP/M, a COM file is a simple type of executable file. The name of the file format is derived from the file name extension .com (not to be confused with the .com top-level domain), which was originally the extension used for such files. However there is no actual association between the file format and the file name extension in any but CP/M and very early versions of MS-DOS.

A screener(SCR) is an advance video or DVD copy of a film sent to critics, awards voters, video stores (for their manager and employees), and other film industry professionals, including producers and distributors.Often, each individual screener is sent out with distinct markings, which allow copies of a screener to be tracked to their source.

In 2003 the MPAA announced that they would be ceasing distribution of screeners to Academy members, citing fears of piracy. A group of independent film makers sued and won a decision against the MPAA. The MPAA later reinstated the screeners with the implementation of a new policy requiring recipients to sign a binding contract that they would not share the screeners with others.

In January 2004, Academy member Carmine Caridi was announced as a "person of interest" in an ongoing FBI investigation into video piracy. He was subsequently expelled from the Academy after he was found to have sent a contact......

The Windows Installer(MSI) (previously known as Microsoft Installer, codename Darwin) is an engine for the installation, maintenance, and removal of software on modern Microsoft Windows systems. The installation information, and often the files themselves, are packaged in installation packages, loosely relational databases structured as OLE Structured Storage Files and commonly known as "MSI files", from their default file extension (compare: .deb, RPM, .pbi). Windows Installer is a significant improvement over its predecessor, Setup API: several new features, such as a GUI framework, the automatic generation of the uninstallation sequence and the powerful deployment capabilities, made Windows Installer a viable alternative to stand-alone executable installer frameworks such as older versions of InstallShield and WISE (later versions are based on Windows Installer) and NSIS.

Microsoft encourages third parties to use Windows Installer as the basis for ......

PIFs, or Program Information Files, define how a given MS-DOS program should be run in a multi-tasking environment, notably to avoid giving it unnecessary resources which could remain available to other programs. TopView was the originator of PIFs which were inherited and extended by DESQview and Microsoft Windows, where they are most often seen.

Within Windows, a PIF holds information about how Windows should run the application the PIF corresponds to. The instructions can include the amount of memory to use, the path to the executable file, and what type of window to use (Full screen, window, size in pixels).

In CP/M-86, CMD is the filename extension used by executable programs. It corresponds to COM in CP/M-80 and EXE in MS-DOS.

SCF is a file extension which indicates a ScoreMaker multimedia show, a Symphony spelling checker configuration or a Windows Explorer Shell Command File.

In MS-DOS, OS/2, and Windows, a batch file is a text file containing a series of commands intended to be executed by the command interpreter. When a batch file is run, the shell program (usually COMMAND.COM or cmd.exe) reads the file and executes its commands, normally line-by-line. A batch file is analogous to a shell script in Unix-like operating systems.

Batch files are useful for running a sequence of executables automatically. Many system administrators use them to automate tedious processes.

Although batch files support elementary program flow commands such as if and goto, they are not well-suited for general-purpose programming.

DOS batch files have the filename extension .BAT. Batch files for other environments may have different extensions, e.g. .CMD in Windows NT and OS/2, or .BTM in 4DOS and related shells.

MPEG/MPG  is not actually a format but short for Moving Picture Experts Group, a working group of ISO/IEC that develops video and audio encoding standards. But in most cases MPEG is taken for the name of the standard formats introduced by that group.

There are several MPEG formats, all standardized.

MPEG-1 is initial video and audio compression standard. The video quality of this standard is almost as good as a VHS tape.

MPEG-2 compared with MPEG-1, it has better quality of coding, multi-channel sound and higher image resolution. Due to all this MPEG-2 became standard in digital television and DVD industry.

MPEG Audio Layer-3 is used for audio compression and creates almost CD quality sound. Previous versions were MPEG Audio Layer 1 and 2. Today most people know this format as MP3.

MPEG-4 was created to stream DVD quality video at lower data rates and smaller file sizes. MPEG-4 supports video/audio "objects", 3D content, sprites, text and other......

An MPA file is an elementary MPEG Audio Stream.