| Filename extension |
.ani |
|---|---|
| Internet media type | application/x-navi-animation |
| Magic number | ACON (4 bytes, ASCII) |
| Developed by | Microsoft |
| Type of format | animated raster image format for mouse cursors |
The ANI file format is a graphics file format used for animated mouse cursors on the Microsoft Windows operating system.[1]
The format is based on the Microsoft Resource Interchange File Format, which is used as a container for storing the individual frames (which are standard Windows icons) of the animation.
File structure[edit]
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)
Frame rates are measured in jiffies, with one jiffy equal to 1/60 of a second, or 16.666 ms.
Sequencing[edit]
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 that 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[edit]
References[edit]
- ^ "ANI File - What is an .ani file and how do I open it?". fileinfo.com. Retrieved 2024-04-27.
External links[edit]
- Description of the ani file format
- Introduce Animated Cursors to Java GUIs, Part 2
- Vulnerability in Windows Animated Cursor Handling
- Ani Editor
- RealWorld Cursor Editor
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