I am playing back on a MacBook Pro, so I don't believe the problem is Apple. I am using Firefox, so it is possible that Firefox is causing the issue. I resaved the file as an MP4 and it now plays...
Thanks for the responses. @opentype I am an admin and this was someone else's post and their video file.
Since Invision Community specifically lists .mov as an acceptable file type, it makes zero sense that the files are not intended to be shared.
Cheers.
We are having trouble getting .mov files to play. The files are small enough....but we get the following screen:
I can download the video from the post and it plays fine on the computer.