Youtube Tips
YouTube shorts:
youtube short can't change thumbnail
vertical video shorter than 1min will be auto uploaded as short
short doesn't have embed code, you need to change
https://www.youtube.com/shorts/VIDEOCODE
to
https://www.youtube.com/watch/VIDEOCODE
to be able to see share panel with embed code
short embed with a flash shape icon, normal video is square shape icon
Youtube video:
youtube normal video can change thumbnail
video longer than 1min can't become as short