Facebook is high on videos these days. With their Watch on board along with the planning of Group Video Chat app on its platform, Facebook is testing out 4K video where users and Pages could be selected.
This feature of 4K will make the upload limit 1080p to 2,160p in Ultra High Definition Format. With their Watch tab on the screen, the users can now upload their own videos along with the native videos of National Geographic and Mike Rowe.
More on 4K
For the devices with slow internet connections, a gear icon is present in the video that will allow the users to view the video quality they want to view. Even the users might able to switch off 4K or not in later stages.