I made a video yesterday, and I edited it in DaVinci and uploaded it. When I say edited it, I just cut out the beginning which was just setting up. When I checked it on YT before I made it public (a new trick I learned!!), it was awful, really pixelated. I had used DaVincis default settings so couldn't work out where I went wrong. I checked my phone and it appears that somehow the video record setting had been turned to the lowest! I am not sure how long this has been the case or how it happened, but I have learned a new lesson, check everything!