Video File Formats
The following is a brief explanation of the different video file formats:
Flash Video Format (.flv)
Flash video is playable within Flash movies files, which are supported by practically every browser on every platform. It has become extremely popular because of that.
Flash video is playable within Flash movies files, which are supported by practically every browser on every platform. It has become extremely popular because of that.
AVI Format (.avi)
The AVI format was developed by Microsoft.
The AVI format usually uses less compression than some similar formats and is a very popular format.
The AVI format was developed by Microsoft.
The AVI format usually uses less compression than some similar formats and is a very popular format.
AVI files most commonly contain M-JPEG, or DivX codecs, but can also contain almost any format.
The AVI format is supported by almost all computers using Windows, and can be played on various players.
Some of the most common players that support the avi format are:
Some of the most common players that support the avi format are:
- Apple QuickTime Player (windows & Mac)
- Microsoft Windows Media Player (Windows & Mac)
- VideoLAN VLC media player (Windows & Mac)
Quicktime Format (.mov)
The QuickTime format was developed by Apple and is a very common one. It is often used on the internet, and for saving movie and video files.
The QuickTime format was developed by Apple and is a very common one. It is often used on the internet, and for saving movie and video files.
It is compatible with both Mac and Windows platforms, and can be played on an Apple Quicktime player.
MP4 Format (.mp4)
This format is mostly used to store audio and visual streams online, most commonly those defined by MPEG.
The mp4 can most commonly be played on the Apple QuickTime Player or other movie players. Devices that play p4 are also known as mp4 players.
Windows Media Video Format (.wmv)
WMV format, short for Windows Media Video was developed by Microsoft.
Videos stored in the Windows Media format have the extension .wmv.
Flash Movie Format (.swf )
The Flash movie format was developed my Macromedia.
This format can include text, graphics and animation. In order to play in Web Browsers, they must have the Flash Plug-In Installed. The flash plug in comes preinstalled in the latest version of many popular Web Browsers.
MP4 Format (.mp4)
This format is mostly used to store audio and visual streams online, most commonly those defined by MPEG.
The mp4 can most commonly be played on the Apple QuickTime Player or other movie players. Devices that play p4 are also known as mp4 players.
Windows Media Video Format (.wmv)
WMV format, short for Windows Media Video was developed by Microsoft.
Videos stored in the Windows Media format have the extension .wmv.
Flash Movie Format (.swf )
The Flash movie format was developed my Macromedia.
This format can include text, graphics and animation. In order to play in Web Browsers, they must have the Flash Plug-In Installed. The flash plug in comes preinstalled in the latest version of many popular Web Browsers.
Compressing Files
The compression system is very useful for Web users, because it lets them reduce the overall number of bits and bytes in a file so it can be transmitted faster over slower Internet connections, or take up less space on a disk.
Most types of computer files are fairly redundant. They have the same information listed over and over again. File-compression programs simply get rid of the unneeded bits. Instead of listing a piece of information over and over again, a file-compression program lists that information once and then refers back to it whenever it appears in the original program.
Lossy and Lossless Compressions
Lossless compression lets you recreate the original file exactly. All lossless compression is based on the idea of breaking a file into a "smaller" form for transmission or storage and then putting it back together on the other end so it can be used again.
Lossy compression simply eliminate "unnecessary" bits of information, tailoring the file so that it is smaller. This type of compression is used a lot for reducing the file size of bitmap pictures, which tend to be fairly bulky.
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