SuperAPI AI Directory

FLUX 3 Video

FLUX 3 Video is a free online AI video creation tool that supports generating cinematic videos with native synchronized audio from text or images, and can generate or extend clips up to 20 seconds in length at 720p or 1080p. It uses a multimodal video model that can understand subjects, motion, camera direction, dialogue, environment, and sound effects as one coherent scene, generating visuals and sound simultaneously. Users can upload materials such as JPG, PNG, WebP (max 20 MB), MP4, WebM, MOV (max 100 MB), and MP3, WAV, M4A, FLAC (max 50 MB). The credit cost is shown before generation, and failed generations are automatically refunded. This tool is suitable for creators who need to quickly produce ads, social short clips, product stories, storyboards, and similar scenarios, but it also has limitations such as duration, resolution, and credit consumption.

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About this tool

FLUX 3 Video is a multimodal AI video model and online creation tool, mainly used to generate cinematic video clips from text or images and to support extending existing videos. It can understand subjects, motion, camera direction, dialogue, environmental atmosphere, and sound effects as one coherent scene, thereby generating videos with native synchronized audio. Users can generate new clips or extend existing videos, supporting specifications up to 20 seconds at 720p or 1080p.

In terms of use, FLUX 3 Video is suitable for turning text ideas into videos, animating a keyframe image, or continuing an existing video clip. It is aimed at creative scenarios such as advertising, social edits, storyboards, and longer sequences, and can adapt to landscape, portrait, square, or editorial formats.

Main capabilities include:

  • Multimodal text and image guidance: You can start from a text description or a first-frame image, and the model will integrate subjects, environment, composition, lighting, visual style, motion, and camera instructions to maintain a consistent creative direction.
  • Native audio generation: Guide dialogue, ambient sound, and sound effects in the same prompt, with visuals and sound generated on a shared timeline, improving synchronization of lip movements, motion, camera changes, and scene audio.
  • Longer generation and natural extension: Generate complete clips from 5 to 20 seconds, or extend an existing video by describing subsequent content, continuing motion, camera direction, lighting, atmosphere, and sound to maintain visual continuity.
  • Output control: Choose a duration from 5 to 20 seconds and a resolution of 720p or 1080p. A credit quote is shown before generation.

Usage is divided into four steps:

  1. Choose how to start the clip: text-to-video, image-to-video, or extending an existing video.
  2. Describe motion and camera: Write clearly in chronological order the subject, events, environment, and lighting, and specify camera behavior, such as slow push-in, tracking shot, orbit, handheld follow, or fixed camera.
  3. Guide sound and continuity: Add dialogue, ambient sound, music, and sound effects, and explain the characters, objects, colors, motion, camera direction, and audio atmosphere that need to remain consistent.
  4. Set output and generate: Choose a duration from 5 to 20 seconds and a resolution of 720p or 1080p, review the credit quote, then generate. Comprehensively evaluate motion, composition, timing, and audio, then adjust instructions item by item.

For applicable scenarios, this tool can be used for advertising, social short clips, product stories, presentation materials, storyboards, and more. Example prompts include "golden hour portrait motion," and the subject can be replaced while keeping specific guidance.

Limitations and pricing information: Text and image uploads have format and size limits. JPG, PNG, WebP max 20 MB; MP4, WebM, MOV max 100 MB; MP3, WAV, M4A, FLAC max 50 MB. Videos are up to 20 seconds long, and resolution is limited to 720p or 1080p. Generation consumes credits, and the specific cost varies with the selected model and settings. A quote is shown before generation, and failures are automatically refunded. The website mentions offering subscriptions or one-time top-ups, including monthly credit grants, credit rollover, and cancellability, but specific prices and plan details are not yet provided.