- ANI (file format)
Infobox file format
name = ANI
extension = .ani
mime =
owner =Microsoft
genre = cursorgraphics file format
containerfor =
containedby =
extendedfrom =
extendedto = The ANI file format is agraphics file format used for animated cursors on theMicrosoft Windows operating system .The format is based on the Microsoft RIFF file format, which is used as a container for storing the individual frames (which are standard Windows icons) of the animation.
File structure
Animated cursors contain the following information: (in order of position in the file)
* Name (optional)
* Artist information (optional)
* Default frame rate
* Sequence information
* Cursor hotspot
* Individual frame(s)., in ICO format
* Individual frame rates (optional)Frames rates are measured in jiffies, with one jiffy equal to 1/60 of a second, or 16.666 ms.
Sequencing
"Sequence information" present in the file determines the sequence of frames, and allows frames to be played more than once, or in a different order than in which they appear in the file. For example, if the animation contains three different images numbered 1, 2 and 3, and the sequence is 1-2-3-2-1, (five frames) then only three icons need to be stored in the file, thereby saving storage space.
See also
*
Cursor (computers)
*ICO (icon image file format) External links
* [http://www.gdgsoft.com/anituner/help/aniformat.htm Description of the ani file format]
* [http://isc.sans.org/diary.html?storyid=2534&dshield=4a9058b3b27bec39517b255884c25591 Vulnerability in Windows Animated Cursor Handling]
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