Music Video · Deep dive

How the generator works

The production pipeline behind every film: the engine listens to the song, a director writes the treatment and the shots, stills are made from your references, motion is shot per scene, and the edit follows the beat.

The storyboard is the middle of the pipeline: everything before it is listening and writing, everything after it is shooting and cutting.

You do not need any of this to use the generator. It is here because knowing what happens in the twenty minutes after you press the button makes it easier to write a direction that lands, to pick a reference that works, and to understand why a scene is one bar long in the chorus and fifteen seconds long in the intro.

#1. It listens to the song

Before a single word of story is written, the audio is analysed: the tempo, the beats and bars, where the sections begin and end, and where the energy peaks. If you allowed the lyrics, the vocals are transcribed too. Everything downstream, from the length of a scene to the pace of the cut, is read from this, not from your description of the genre.

#2. A director writes the treatment and the shots

A director model gets your direction, your references, the lyrics if you allowed them, and the analysis. It writes a treatment for the whole song, then a shot list addressed in bars, not seconds: every scene knows which part of the song it belongs to. The energy of the track shapes the rhythm of the list, so the loudest passages get short scenes that can be cut quickly, and a quiet intro or a breakdown can be one long take. The director also follows a set of production rules learned from many films, which is why frames come out lit the way the story says, empty when they should be empty, and without the things motion models get wrong. If you chose Research the world, a research pass runs first and adds real facts and photos of your subject to the brief.

#3. Every scene becomes a still

Each scene is rendered as a keyframe by an image model conditioned on your actual references, so a palette, a location or a drawing style carries into the frame instead of being described and hoped for. Scenes where your main character is visible get extra care so the face holds from take to take. A retake asks for a genuinely new frame; an edit changes the one you have. With Auto QC on, every frame is reviewed against the references and the scene direction, and the ones that fail are retaken once and reviewed again.

One keyframe at full size. Everything the motion stage does starts from this image.

#4. Motion is shot per scene

After you approve the storyboard, each keyframe is animated by a motion model with a prompt written for that scene: the camera move, what happens, where it arrives. Many scenes are shot in parallel, which is why a hundred-scene film still comes back in about twenty minutes. The quality option you pick (480p or 768p, Fast or Cinematic) is the engine and resolution used here, priced per generated second. Every take is checked before it is used; a scene that fails is reported on its card so you can retake it.

#5. The edit follows the beat

The cut is built from the analysis, not by eye. Every cut lands on the beat, and the pace follows the energy of the song: quick in the loudest sections, held in the quiet ones. Hits get accents, long takes get something happening in the middle, and in the biggest passages the edit follows the instrument that carries them, so a drop feels played rather than timed. It does not drift either: the last cut of a five-minute song sits as tightly as the first.

#6. Finish and render

A restrained visual layer and a film grade finish the picture (this is where the Black & White quick style is applied), your original audio is joined to it, and the film is packaged for streaming at several qualities, with the original available for download.

#What this means for you

  • Write what the camera sees, not what the software should do. The director already knows the tools.
  • References beat adjectives. A real photo of the place, a scan of the artwork, a cover: the image stage works from them directly.
  • Fix the still, not the motion. A wrong frame is 3 credits to retake; a wrong clip costs motion credits. Retake and edit before you press Make the film.
  • Expect short scenes in the loud parts. That is the edit following your song. If you want a long, slow shot in the chorus, say so in the direction.
Which AI models are used?

A mix that changes as better models ship: a director model for the treatment and shots, an image model for the stills, and motion models for the video (Fast and Cinematic are two of them). The analysis and the edit are SoundBoost's own and do not depend on any of them.

Why did a scene get a completely different image after a retake?

A retake asks for a new frame on purpose. Use Edit image when you want the frame you have with one thing changed, and Retake image when you want a different frame.

Does the edit ever cut off the beat?

Every render is checked cut by cut against the song before it is delivered.

Ready to see your song as a film?

Upload a song, add a picture or a line, approve the storyboard, and the film comes back cut to your beat.