Skip to content

AI VFX Just Got Insane — Seedance 2.0 in 4K Turns Real Footage Into Movies

2026-06-29 · blog how-to · Higgsfield · original

Topic: Post-production & finishing (also: Prompting & AI assistants) · mode: Tutorial · tags: prompts shared, cut from a long video

Higgsfield's blog of 29 June 2026, taken from its YouTube tutorial on AI VFX over real footage, teaches a five-step video-to-video workflow (a free Claude skill writes a Seedance 2.0 prompt with a lock header, run in Seedance 2.0 at 4K) across three levels: swapping the world, changing one element, and handheld shots.

What is said

  • Level 3 — The Handheld Cinematic Showcase

What is said

★ — how much it matters to the source.

  • ★★★ For AI VFX over real footage (video-to-video), Higgsfield advises shooting the clips first and shooting each one already knowing the effect wanted.
  • ★★★ Higgsfield advises running VFX over footage in Seedance 2.0 in 4K, saying faces, lip-sync and fine detail hold at 4K but warp and fall apart at 1080p. · Seedance 2.0
  • ★★ Higgsfield shares a free skill that writes the Seedance 2.0 prompts for VFX over real footage. · Seedance 2.0
  • ★ Step 1 of the VFX workflow: download Higgsfield's Seedance 2.0 VFX skill and add it in Claude under Customize → Skills. · Claude, Seedance 2.0
  • ★★ Step 2: open a fresh Claude chat and drop in the clip; Claude reads it as a set of frames, so it sees exactly what is in the shot: the person, the movement, the camera and the light. · Claude
  • ★★ Step 3: turn on the skill and name the one change wanted in plain words, such as swapping the background to a desert at sunset right when he snaps his fingers.
  • ★★ Step 4: the Claude skill writes the full Seedance 2.0 prompt, locking everything that must stay identical and naming the exact second the change happens. · Claude, Seedance 2.0
  • ★★ Step 5: take the prompt into Seedance 2.0 in 4K and run it on the clip. · Seedance 2.0
  • ★★ Higgsfield advises starting VFX over footage with Level 1: keep the person exactly as shot and change everything around them, learning the workflow that every later shot repeats.
  • ★★★ The lock header, the reusable top of every VFX prompt, lists and locks everything that must stay as shot (face, performance, wardrobe, rings, the exact lens and camera move) and names the second the world may change.
  • ★★ In the walking shot the prompt keeps the person as shot while the real environment holds and then turns to open desert the moment he snaps his fingers. · Seedance 2.0
  • ★★ When the camera moves fast, as in the driving shot, the new world has to move with the person at the right speed and relight them; the same locks (person, car, seatbelt, rig, driving motion) stay and only environment and lighting change.
  • ★★ Level 2 of VFX over footage changes one thing inside the shot (a creature, a morphing body, a head on fire) with the same steps, naming a smaller, more specific change.
  • ★ The head-on-fire prompt locks the face, expression, gestures, the car and the golden-hour light, then adds fire to the hair.
  • ★ The hand-to-snake prompt locks the face, voice, performance and locked-off camera and changes only the right arm, the hand morphing into a snake mid-sentence.
  • ★★★ To add a specific creature, Higgsfield advises showing it instead of describing it: make it in GPT Image 2, add it as an Element named @LIZARD and feed it in with the clip so Seedance 2.0 builds the right animal. · GPT Image 2, Elements, Seedance 2.0
  • ★★ Higgsfield calls handheld shots the hardest level of VFX over footage: on a locked-off shot the frame barely moves, but handheld the camera moves the whole time, so the effect has to move with it.
  • ★★ In the jungle-temple shot the prompt keeps the grips, timing and handheld shake and rebuilds everything around them, monkey bars into rusted iron rungs and concrete into carved stone, over a bottomless chasm. · Seedance 2.0
  • ★★ In the kraken shot the prompt keeps the descent, performance and handheld move and rebuilds a staircase into a ship deck in a night storm with a giant kraken and panicking crew, composited into the single moving shot.

Threads in this video

  • restate · How do you add AI VFX to your own footage? — For AI VFX over real footage (video-to-video), Higgsfield advises shooting the clips first and shooting each one already knowing the effect wanted.
  • refine · How do you add AI VFX to your own footage? — The lock header, the reusable top of every VFX prompt, lists and locks everything that must stay as shot (face, performance, wardrobe, rings, the exact lens and camera move) and names the second the world may change.
  • restate · Is generating video in 4K worth it over 1080p? — Higgsfield advises running VFX over footage in Seedance 2.0 in 4K, saying faces, lip-sync and fine detail hold at 4K but warp and fall apart at 1080p.
  • restate · Which LLM should be used to write video prompts? — Step 4: the Claude skill writes the full Seedance 2.0 prompt, locking everything that must stay identical and naming the exact second the change happens.
  • restate · How do you change the background or location of an existing video? — When the camera moves fast, as in the driving shot, the new world has to move with the person at the right speed and relight them; the same locks (person, car, seatbelt, rig, driving motion) stay and only environment and lighting change.

Mentioned

Central: Claude · lock header · Seedance 2.0 · Seedance 2.0 VFX Claude skill

Also: Elements · GPT Image 2

Also centred on Seedance 2.0 VFX Claude skill: I Added Insane AI VFX to Real Footage in 4K(Seedance 2.0) · Add AI VFX to Real Footage: Swap the world: the walking location swap · Add AI VFX to Real Footage: Collapsing jungle temple

Replies to

← Previous: Why Do Your AI Characters Look Weird? 7 Tools That Actually Fix It · Next → How to Make AI Video Look Like It Was Actually Filmed: WAN Camera Control Guide