This video is an initial review and comparison between the Xiaomi Yi in 1080p mode to the GoPro Hero 4 Black Edition. Also cover the issue of focussing the camera if yours came with poor factory focus.
This camera was kindly loaned out to use by RCGroups users Geggog, purely to get a comparison video out specifically for the purpose of sharing this info with the community. We got to use it before he did! So thanks heaps buddy. His Youtube Channel https://www.youtube.com/user/Geggog77
Both Cameras recorded video at 1080p @ 60FPS, but I only exported the project as 30fps. This will only effect fast motion footage, but as far as video quality etc this test is still valid.