i want to tell u how i made it. maybe someone can give me advice how to increase quality of video. firstly, i added instant 4k plugin on video and setted it on max quality and 2k resolution. then i sized video a little up to hide borders from the screen. then crop a video and added white flashes transition.
i really don't know how to increase video quality, but i saw better resolution video on some tiktok edits. maybe someone know an AI to do that things?