Model guide · Image · ByteDance
Reference image conditioning with an explicit subject lock
Give it the reference frame and describe only what changes. It holds a subject across a set better than most when the instruction is phrased as an edit rather than as a new scene.
What it is good at
Where it stops
Prompt phrasing matters more here than elsewhere — a scene description will re-roll the face where an edit instruction would have kept it.
Routes it can take you on
The syntax
This is Maya Rao from the cast, rendered into Seedream's own syntax. Square brackets are the things only you have.
Photograph of a woman, late twenties, South Asian features, an oval face, dark brown almond eyes, thick straight brows, a straight nose, full lips, a single dark mole high on the right cheekbone, mid-back length wavy jet black hair with a centre part, golden skin, natural texture and visible pores, average height with an average build. Wearing plain unbranded basics, a warm neutral palette of sand, bone and camel, in a small modern city apartment, soft daylight from a large window, camera at eye level. Medium portrait, three-quarter angle, looking into the lens. Neutral expression, hands relaxed and out of frame Keep identical: a woman, late twenties, South Asian features, an oval face, dark brown almond eyes, thick straight brows, a straight nose, full lips, a single dark mole high on the right cheekbone, mid-back length wavy jet black hair with a centre part, golden skin, natural texture and visible pores, average height with an average build Change only: [the one thing that changes in this shot]
Build your own in the studio and this same block comes back filled with your persona instead — same structure, your locked line, your seed.