Windows 10: Pop out video for Firefox or Chrome

Hi,
Opera has really nice inbuilt pop out video feature. You can pop videos out on any website, you can resize them and they stay on top, so u can continue browsing or any other things & continue watching the video. I find it very useful, but I wanted to find similar addon/extension for Firefox or Chrome, but I couldn't find any. I found few, but they don't work. Maybe some of you know?

:)

 

Video Playback within Microsoft Edge & Internet Explorer

This is outrageous. Many videos on the internet don't play in the new Edge or IE browsers in Windows 10. This is not something I should have to run some utility to fix, when Chrome and Firefox have this figured out... heck IE had it figured out before Windows
10.

For a browser that is advertised as making the web "just work", it just doesn't.

Google Chrome, and Firefox have no problems with the same websites.

Here is a common example, try playing the repair video here:

http://www.appliancepartspros.com/ge-evaporator-fan-motor-wr60x10185-ap3875639.html

It starts loading then goes black... works fine in Chrome.

This is not some isolated incident, it occurs with all kinds of video content.

 

Edge and Chrome start normally; Firefox requires "Run as Admin"

Victor_W, I updated to 56.0.2, so now that problem is solved. Unfortunately, another one popped up: when I hit the post's "Reply" button, the post grays out, so I can't enter anything (at least in Firefox; in Chrome, I have no trouble adding this reply).
Is there some Firefox setting that I need to tinker with to fix this?