you can run avi's on mac ...i have a mac and pc ..what are you running your program you using ?

here is one of the programsi use

divx player

https://community.divx.com/labs/?cid=3

also program called VLC for mac works wonders too ...

https://www.videolan.org/vlc/download-macosx.html


quicktime works well too but sometimes it misses some avi's and have to go with others ...but i use these three and dont miss out on any of them