.AVI File Extension
Full form: Audio Video Interleave
What is a .avi file?
An older Microsoft video container that stores audio and video together, usually with larger file sizes. Files that end with .avi belong to the video family of file types, so your computer links them with a suitable program automatically.
Where is .avi used?
Legacy videos and some camera recordings. Because the format is so common, almost every modern device and software understands it.
Examples of .avi file names
clip.avi
How to open a .avi file
You can open it with: VLC, Windows Media Player. If it does not open, check that the file is not damaged and that you have downloaded it fully; also confirm that the extension was not renamed by mistake.
Quick tips
Never rename a file just to change its extension, because that does not convert the data inside. Use a proper converter or the Save As / Export option. Keep a backup copy of important video files before editing them.