Weird S Video screen noise on N64 PAL

[iceghostTV]

Hello everyone

I recently hooked up my N64 to a modern tv via S Video but the image looks kinda bad. There are like gray stripes moving from the top right side to the bottom left. I unfortunatelly cant post any pictures but maybe you know what I mean. Im really thankfull for answers and sorry for my english🙂

Heres the link of the video: https://jmp.sh/s/BbcaU3mhr6vyVPtI0eXK