When I export a .avi file from FIJI, it will typically open in PowerPoint without issue. However, if I have used the crop function on the movie during the preparation, after exporting to .avi it will no longer open in PowerPoint. It gives an error "PowerPoint cannot insert a video from the selected file. Verify that the path and file format are correct, and then try again."
This appears to be limited to FIJI on a Windows machine, using the crop function in FIJI on MacOS still allowed a successful export and opening of .avi in PowerPoint.
Version info:
FIJI: 2.16.0/1.54p / Java 1.8.0_322
PowerPoint: 2510 (Build 19328.20178)