--- description: FLUX 3 Video is Black Forest Labs' video generation model. It generates video from a text prompt (t2v), animates one or more reference images (i2v), or continues an existing clip (v2v), with synchronized audio, up to fhd resolution, and 5-20 second durations. title: FLUX 3 Video image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/llms.txt > Use this file to discover all available pages before exploring further. ![Black Forest Labs logo](https://developers.cloudflare.com/_astro/blackforestlabs.Ccs-Y4-D.svg) # FLUX 3 Video Text-to-Video • Black Forest Labs Copy as Markdown|[View as Markdown](https://developers.cloudflare.com/ai/models/black-forest-labs/flux-3-video/index.md)|[Agent setup](https://developers.cloudflare.com/agent-setup/) `black-forest-labs/flux-3-video` * Third-party FLUX 3 Video is Black Forest Labs' video generation model. It generates video from a text prompt (t2v), animates one or more reference images (i2v), or continues an existing clip (v2v), with synchronized audio, up to fhd resolution, and 5-20 second durations. | Model Info | | | ----------------- | -------------------------------------------------------------------------------------------------------------------------------- | | Terms and License | [link ↗](https://blackforestlabs.ai/terms-of-service/) | | More information | [link ↗](https://blackforestlabs.ai/) | | Pricing | [View pricing in the Cloudflare dashboard ↗](https://dash.cloudflare.com/?to=/:account/ai/models/black-forest-labs/flux-3-video) | ## Usage ```ts const response = await env.AI.run( 'black-forest-labs/flux-3-video', { mode: 't2v', prompt: 'A cozy ramen shop on a rainy Tokyo night, steam rising from the broth. Rain patter and quiet kitchen sounds.', resolution: 'hd', duration: 5, generate_audio: true, }, ) console.log(response) ``` ```bash curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \ --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \ --header "Content-Type: application/json" \ --data '{ "model": "black-forest-labs/flux-3-video", "input": { "mode": "t2v", "prompt": "A cozy ramen shop on a rainy Tokyo night, steam rising from the broth. Rain patter and quiet kitchen sounds.", "resolution": "hd", "duration": 5, "generate_audio": true } }' ``` ```json { "state": "Completed", "result": { "video": "https://examples.aig.cloudflare.com/black-forest-labs/flux-3-video/text-to-video.mp4" }, "gatewayMetadata": { "keySource": "Unified" } } ``` ## Parameters Schema variant Text to VideoImage to VideoVideo Continuation mode `string`requiredconst: t2v prompt `string`requiredminLength: 1Free-form prompt describing the video. aspect\_ratio `string`enum: auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16Output aspect ratio. \`auto\` (default) picks one from the prompt and any references. ▶duration `one of` resolution `string`enum: hd, fhd\`hd\` (default) or \`fhd\` for a higher-resolution result finished by the video upsampler. generate\_audio `boolean`Generate synchronized audio alongside the video. Defaults to true. safety\_tolerance `integer`minimum: 0maximum: 4Tolerance for input/output harm moderation, 0 (strictest) to 4\. Defaults to 2\. Sexual content is capped at level 3 and hate content at level 2 regardless of the requested tolerance; requests with conditioning media are capped at level 2. draft `boolean`Generate a fast, low-cost preview instead of a final render, at a reduced flat price. Only available at hd resolution. mode `string`requiredconst: i2v prompt `string`requiredminLength: 1Free-form prompt describing the video. ▶keyframes `one of`required aspect\_ratio `string`enum: auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16Output aspect ratio. \`auto\` (default) picks one from the prompt and any references. ▶duration `one of` resolution `string`enum: hd, fhd\`hd\` (default) or \`fhd\` for a higher-resolution result finished by the video upsampler. generate\_audio `boolean`Generate synchronized audio alongside the video. Defaults to true. safety\_tolerance `integer`minimum: 0maximum: 4Tolerance for input/output harm moderation, 0 (strictest) to 4\. Defaults to 2\. Sexual content is capped at level 3 and hate content at level 2 regardless of the requested tolerance; requests with conditioning media are capped at level 2. draft `boolean`Generate a fast, low-cost preview instead of a final render, at a reduced flat price. Only available at hd resolution. mode `string`requiredconst: v2v prompt `string`requiredminLength: 1Free-form prompt describing the video. start\_video `string`requiredThe video to continue: an HTTPS URL or base64 mp4 (<= 50MB, <= 15s). The generated clip carries on from its final frames. aspect\_ratio `string`enum: auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16Output aspect ratio. \`auto\` (default) picks one from the prompt and any references. ▶duration `one of` resolution `string`enum: hd, fhd\`hd\` (default) or \`fhd\` for a higher-resolution result finished by the video upsampler. generate\_audio `boolean`Generate synchronized audio alongside the video. Defaults to true. safety\_tolerance `integer`minimum: 0maximum: 4Tolerance for input/output harm moderation, 0 (strictest) to 4\. Defaults to 2\. Sexual content is capped at level 3 and hate content at level 2 regardless of the requested tolerance; requests with conditioning media are capped at level 2. draft `boolean`Generate a fast, low-cost preview instead of a final render, at a reduced flat price. Only available at hd resolution. video `string`format: uriSigned URL to the generated mp4 (24fps, with audio by default). Expires \~2 hours after ready — download promptly. draft\_cache `string`Draft-mode cache bundle URL, only present for draft: true requests. video `string`format: uriSigned URL to the generated mp4 (24fps, with audio by default). Expires \~2 hours after ready — download promptly. draft\_cache `string`Draft-mode cache bundle URL, only present for draft: true requests. video `string`format: uriSigned URL to the generated mp4 (24fps, with audio by default). Expires \~2 hours after ready — download promptly. draft\_cache `string`Draft-mode cache bundle URL, only present for draft: true requests. ## API Schemas (Raw) Input Output Was this helpful? YesNo ## On this page [![](https://developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/ai/models/black-forest-labs/flux-3-video/#page","headline":"FLUX 3 Video (Black Forest Labs) · Cloudflare AI docs · Cloudflare AI docs","description":"FLUX 3 Video is Black Forest Labs' video generation model. 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