Still trying to get this MP4 to play...

[N-OS X-tasy!]

So let me get this straight: You’re saying that your 2017 MBA doesn’t have the git-up-and-go to play back 1080p video? I get that it has the integrated GPU, but still... that seems more than a little lame. 1080p video has been a thing since at least the mid-2000s.

EDIT: MacTracker indicates that your MBA can handle up to 3840 x 2160 on an external display. That’s a LOT more pixels that 1920 x 1080.