Use a media player that supports AVI files
Open the media player
Select the AVI file
Click Open or drag the file into the player
Press Play
If the file does not play, install a codec pack or use a different player
On Windows, use VLC Media Player, Windows Media Player, or MPC-HC
On Mac, use VLC Media Player or Elmedia Player
On mobile, use a compatible video player app
If needed, convert the AVI file to MP4 for wider compatibility