4080x2040 videos are "shaky" on android

second sample of the same file, only difference is that there a studio intro at the start, and it jitters much more often that the first sample, maybe 5 out of 10 times, but still plays fien a lot more often that big original files. maybe it'e because of how these starting frames look, their bitrate etc? i know very little about how it actually works, i'm just a more or less advanced user, but i'm sure i'm not seeing things, and it might not be reproducible on other hardware than mine, but i hope you can detect at least some pattern here

Thank you!

i've cut the first 30 secs or so of intro from my full length 2040p files, and most of the time they also exhibit that "positive" effect: half a second jitter and then video plays fine, especially on the second try if i start from the beginning ( choosing "no" for "continue to watch?" popup). so far my best workaround for the issue