The brief is the text box at the bottom of Studio. You get 500 characters, and you won't need most of them. One honest paragraph about the place and the mood beats a wall of keywords every time.
Say where we are, what time it is, what the weather's doing. "A rainy Tokyo rooftop at 2am, warm window glow, neon reflections in puddles" is already a complete brief.
Want a specific look? Name it. Anime, watercolour, pixel art, oil painting: whatever medium you ask for is the one that renders. If you don't ask, you get a clean cinematic look, like a photograph.
You can even set the framing, like "eye-level, 35mm lens, shallow depth of field". One thing to know: the camera never moves. Chillframe scenes hold a single framing and live inside it, so a pan or a zoom in the brief goes nowhere.
Whatever genre you name is the genre you get. Lofi, jazz, medieval tavern folk, synthwave, even metal. Same for instruments, tempo and mood: say "slow fingerpicked guitar, about 70 BPM, warm and sleepy" and that's the album. Name nothing and you get calm instrumental lofi, the house default.
Sounds count too, not just music. Steady rain, a crackling fire, the murmur of a cafe: if you'd hear it in the scene, write it down.
One quirk: artist names get translated instead of copied. Ask for "something like Nujabes" and the director turns that into jazzy, dusty, sample-chopped hip-hop. You get the flavour, not the name.
A two-line brief leaves room, and the director fills it with choices that fit the genre. A detailed brief gets followed to the letter, and anything you rule out stays out. "No drums" means no drums, every time.
Every video is 16:9, every track is instrumental (a wordless choir is as vocal as it gets), and the picture never contains text or logos, even if you ask nicely.
Stuck on a blank box? Every preset is a worked example: pick one and its full brief lands in the composer for you to edit. And typing @ lets you point at up to 8 images, videos or tracks you've saved to your Library.
Curious how the music half gets interpreted? That's the music-direction menu; see Choose Auto or Guided music direction. Or email [email protected] and a human will read it.