FLUX 3 Keyframes to Video API

FLUX 3 Keyframes to Video

FLUX 3 Keyframes to Video gives creators temporal directing control for multi-shot blocking and complex visual effects. Position up to 10 keyframes along a 24 fps timeline to establish critical story moments, and let the model synthesize physical dynamics, camera movement, and native audio connecting each frame.

Why Choose This?

• 24 fps timeline precisionPin keyframes to exact frame indices (0–480) on a 24 fps timebase, precisely commanding when visual beats occur in the edit.

• Choreograph up to 10 keyframesPosition 1 to 10 still frames in a single task, enabling complex multi-beat sequences and diverse viewpoint changes.

• Positioned KeyframesPosition each image with frame_index and use the prompt to direct subject motion and camera changes.

• Prompt-coordinated directionUse prompt text to choreograph intermediate actions and camera pans between keyframes, turning stills into dynamic storytelling.

• Timeline-synchronized native soundGenerates audio that shifts alongside keyframe progression, matching room tones, foley, and music to evolving scene geometry.

• Production-ready 720p and 1080pDelivers sharp 720p and 1080p renders that maintain edge integrity and textural depth across complex motion sequences.

Parameters

How to Use

1. 01

   Plan timeline and keyframesCalculate frame indices at 24 fps and prepare 1–10 public image URLs. Keep indices unique and within 0 through duration × 24.

2. 02

   Direct motion and transitionsIn prompt, describe how the subject advances across successive keyframes, detailing camera movement and audio cues.

3. 03

   Set total durationSpecify an integer duration between 5 and 20 seconds, verifying all frame_index values fall within duration × 24.

4. 04

   Choose resolution and aspect ratioPick 720p or 1080p resolution and set an appropriate aspect ratio or leave set to auto.

5. 05

   Configure sound settingKeep sound set to true to synthesize matching audio cues across the timeline, or set to false for silent video.

6. 06

   Generate and review sequenceConfirm the estimated credits, click Run, and inspect the continuous motion linking your keyframes before downloading.

Pricing

Billed per output second by resolution tier, including native synchronized audio. 1 credit = $0.005.

Best Use Cases

• Storyboard directing and blockingMap consecutive storyboard panels onto an explicit timeline, turning concept art into continuous cinematic footage.

• Complex character choreographyPin key performance postures at exact seconds, generating natural dance, acrobatics, or sports sequences.

• Multi-angle product showcaseAnchor front, profile, and macro shots at designated beats to produce a seamless 360-degree commercial reel.

• Time-lapse environmental shiftsPlace dawn, midday, and twilight stills along the timeline to create atmospheric day-to-night transitions.

Pro Tips

• Remember the 24 fps formula: 1s = 24 frames, 2.5s = 60 frames, 5s = 120 frames, with maximum index equal to duration × 24.
• Choose keyframe positions for the intended shot, keeping every frame_index unique and within the output timeline.
• Keep intervals between adjacent keyframes at 12 frames (0.5s) or more to give the physical engine room to interpolate naturally.
• Sequence prompt directions to match timeline beats, e.g., 'dolly right for first 2 seconds, then push into close-up'.
• Coordinate sound design with critical visual beats, such as 'heavy door latch clicks shut exactly at the close-up'.

Notes

• 1–10 keyframe objects, each with a public image URL and a unique integer frame_index from 0 through duration × 24 inclusive.
• Every frame_index must fall within the range 0 to duration × 24 and must be distinct.
• After submission via API, record the returned task_id to poll progress and download the completed asset.
• Rendered videos are output in standard MP4 format and can be dropped directly into timelines to link neighboring shots.