Playing with mpv.
They appear mostly on curvatures when the screen is "moving" vertically.
Well, it tells you I was right about the resolution (720x480) and it gives you the frame rate, 29.97 (effectively 30 but not quite, mathematically). And the audio is basically uncompressed 48khz at 1536kbps. And that you're watching in Japanese (ja) and English (en) isn't available.
It looks like you're 14:20 into a 1:09:27 DVD which is like 3 episodes?