Step 01: The trend and the reference video
I pick the trend and note what happens and where the cuts fall: the reference video decides motion, camera and rhythm.
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The trend is the one from reels where you walk down the street, stop at a stall, bite into something and then dance in front of the shop, with fast cuts to the beat of the music. Genjutsu doesn't invent people: it transforms whoever is in the reference video. If there are three people in the video, there are three characters in the result.
Before generating I watch the video carefully and write down who does what, the gestures and where the cuts fall: in the image of this step you can see my shot list. Genjutsu accepts references from 4 to 30 seconds: mine was longer, so I split it in two parts at the cuts, one of about 20 seconds and one of about 14.
You can do it in two ways. By hand: you watch the video and write the shot list and the prompt yourself, it takes about ten minutes. With a very powerful paid AI (for example GPT-6 Astra or Claude Opus 5.5): you give it the video, ask it to write the shot list and the prompt, and in a few seconds you have a draft. The request I would make is in the prompt box: simple, the way I would write it to a person. I usually tell it which character in the video must be replaced by which of the images I attach; you do the same with objects, landscapes and everything else. Always check the draft: with a less powerful AI the shot list comes out wrong and you only notice after you've generated.
Some AIs can't see videos: in that case have it extract the frames itself, one every half second, with a free program like ffmpeg. The motion of this video comes from a reel I found on social media, and I'm not showing it here: the shot list is made from the frames of my result. For your own work the safest route is to shoot your own reference: a few minutes with your phone, for a few seconds of video. With the phone it's best to do several takes and keep the good one: that's the one you then bring into Genjutsu to make the video with your AI influencers.

TipWrite down the cuts with their time: you need them to edit the pieces back together at the same rhythm.





