You are literally describing my first salvia trip. It was like.. falling out? of a film real? And then seeing the frames whizzing past, along with film reals (frames) of all these other perspectives everywhere.. and then falling BACK into a string of film, but it wasn't mine. And there were the clowns. And they were as surprised to see me as I was them. And as fast as I had fell in, I fell back out, and snapped back into my film reel, and BAM back into reality, laughing my face off.

All of maybe 3 minutes, probably less.