Play GIFs (and other video formats) in the Details view

[waffle2028]

Is your feature request related to a problem? Please describe.
It's hard to visually compare 2 GIFs in the Details view. Only the first frame is being shown

Describe the solution you'd like
Play GIFs (or other video formats) on the Details view in sync. If one of them has fewer frames, wait until the other one is finished so the next loop is in sync.

Having an option to change playback speed would be awesome too.

Describe alternatives you've considered
No idea for now.

Additional context
I'm using version 4.2.1.

[glubsy]

GIF files are barely supported right now, so yes, these would be a decent feature to have.