I was shooting 4K 3840x2160 @ 60FPS the file size is 303MB i know it looks like a thumbnail quality i am positive this is the video that came out of the SD card not my ipad as i just uploaded it from my computer, furthermore even the live camera in my tablet is out of focus. Never had the problem with my Mavic Pro or my previous P4P which was traded for this P4P as the previous one had gimbal jerk. I have tapped the screen to focus but image stays out of focus also held the shutter button halfway for focus with no luck, I tried MF same issue. Not exactly sure what's wrong with the camera
The video you posted is not shot at 4K. Even if it was horribly out of focus it would not look like this. This looks like a very very low res video that has been sized up somehow.
When you uploaded it, what did that process look like? You said you 'shared it'. Maybe your 'sharing' opted to make it tiny in a way similar to when I choose to post a photo from my iPhone. I would suggest logging into your YouTube account and doing a direct upload of the video directly from the SD card that was in your bird.
Something very peculiar is going on here.
If you uploaded a high res video to YouTube, the resolution maximum for the video would not be capped at 240p as this one is.