Few more options for Video streaming sites

silverlion 

"Pin the video player when scrolling down the page
also add Position of video player"

Websites like Facebook do that on scroll, it's something to be done by website developers, they have control over their websites.

but Edge has this feature that you can use to do it on websites that don't have it, change the position of video

Built in Picture in Picture mode (PIP)

https://techcommunity.microsoft.com/t5/discussions/new-feature-built-in-picture-in-picture-mode-pip-is-added-to/m-p/1205063

"Automatically pause videos opened in background tabs"

this is done using media autoplay blocking feature in Edge: (currently it's work in progress)

edge://settings/content/mediaAutoplay

you can use this flag to add "block" option:

#edge-autoplay-user-setting-block-option

"Default volume level for example 50"

this could be useful, Firefox has this feature too

in about:config there is an option called "media.volume_scale" and it's set to "1.0" which means 100%.

I can set it to "0.5" and default volume will be "50%". (no browser restart required)

but it doesn't work everywhere. it works only on HTML5 videos with explicit <video> tag. I tried on YouTube and had no effect.

but for example it works on this HTML5 video: https://www.w3schools.com/html/html5_video.asp

so this is something else that websites individually control. Twitter for example can play videos muted by default unless user clicks on it. this way website developers have more control over their user experience.