Parallax with text scroll and fixed videos/pictures in the background

Hey, I’m looking for a landing page template to create similar effects than on this page: Butšan raunioista löytyy elämän rippeitä ja harhailevia lemmikkejä – tältä näyttää nyt kortteleissa, joissa venäläiset tappoivat ja raiskasivat (it’s an article about the war in Ukraine). If you scroll down a bit, video will scroll into viewport and text continues to scroll on top of it, at some point video will change to pictures and then later the normal page content scrolls into viewport etc. I have tried to search for examples and demos, but I don’t know if this effect has some special name.