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OpenClaw agents generate videos from text prompts, reference images, or existing videos through video_generate. Sixteen provider backends are supported; the agent picks the right one automatically based on config and available API keys.
video_generate only appears when at least one video-generation provider is available. If it is missing from your agent tools, set a provider API key or configure agents.defaults.videoGenerationModel.
video_generate has three runtime modes, resolved from the reference inputs in the call:
  • generate - no reference media (text-to-video).
  • imageToVideo - one or more reference images.
  • videoToVideo - one or more reference videos.
Providers can support any subset of those modes. The tool validates the active mode before submission and reports supported modes in action=list.

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Quick start

1

Configure auth

Set an API key for any supported provider:
2

Pick a default model (optional)

3

Ask the agent

Generate a 5-second cinematic video of a friendly lobster surfing at sunset.
The agent calls video_generate automatically. No tool allowlisting is needed.

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How async generation works

Video generation is asynchronous:
  1. OpenClaw submits the request to the provider and immediately returns a task id.
  2. The provider processes the job in the background (typically 30 seconds to several minutes depending on the provider and resolution; slow queue-backed providers can run up to the configured timeout).
  3. When the video is ready, OpenClaw wakes the same session with an internal completion event.
  4. The agent reports it through the session’s normal visible-reply mode: automatic final reply, or message(action="send") when the session requires the message tool. If the requester session is inactive, or its wake fails and generated media is still missing from the completion reply, OpenClaw sends an idempotent direct fallback with the media.
While a job is in flight, duplicate video_generate calls in the same session return the current task status instead of starting another generation. Use action: "status" to check without triggering a new generation, or openclaw tasks list / openclaw tasks show <lookup> from the CLI (see Background tasks). Outside of session-backed agent runs (for example, direct tool invocations), the tool falls back to inline generation and returns the final media path in the same turn. Generated video files save under OpenClaw-managed media storage when the provider returns bytes. The default cap is 16MB (the shared video media limit); agents.defaults.mediaMaxMb raises it for larger renders. When a provider also returns a hosted output URL, OpenClaw delivers that URL instead of failing the task if local persistence rejects an oversized file.

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Task lifecycle

Check status from the CLI:

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Supported providers

Some providers accept additional or alternate API key env vars. See individual provider pages for details. Run video_generate action=list to inspect available providers, models, and runtime modes at runtime.

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Capability matrix

The explicit mode contract used by video_generate, contract tests, and the shared live sweep:

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Tool parameters

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Required

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prompt
string
required
Text description of the video to generate. Required for action: "generate".

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Content inputs

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image
string
Single reference image (path or URL).
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images
string[]
Multiple reference images (up to 9).
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imageRoles
string[]
Optional per-position role hints parallel to the combined image list. Canonical values: first_frame, last_frame, reference_image.
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video
string
Single reference video (path or URL).
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videos
string[]
Multiple reference videos (up to 4).
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videoRoles
string[]
Optional per-position role hints parallel to the combined video list. Canonical value: reference_video.
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audioRef
string
Single reference audio (path or URL). Used for background music or voice reference when the provider supports audio inputs.
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audioRefs
string[]
Multiple reference audios (up to 3).
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audioRoles
string[]
Optional per-position role hints parallel to the combined audio list. Canonical value: reference_audio.
Role hints are forwarded to the provider as-is. Canonical values come from the VideoGenerationAssetRole union but providers may accept additional role strings. *Roles arrays must not have more entries than the corresponding reference list; off-by-one mistakes fail with a clear error. Use an empty string to leave a slot unset. For xAI, set every image role to reference_image to use its reference_images generation mode; omit the role or use first_frame for single-image image-to-video.

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Style controls

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aspectRatio
string
Aspect-ratio hint such as 1:1, 16:9, 9:16, adaptive, or a provider-specific value. OpenClaw normalizes or ignores unsupported values per provider.
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resolution
string
Resolution hint such as 360P, 480P, 540P, 720P, 768P, 1080P, 4K, or a provider-specific value. OpenClaw normalizes or ignores unsupported values per provider.
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durationSeconds
number
Target duration in seconds (rounded to nearest provider-supported value).
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size
string
Size hint when the provider supports it.
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audio
boolean
Enable generated audio in the output when supported. Distinct from audioRef* (inputs).
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watermark
boolean
Toggle provider watermarking when supported.
adaptive is a provider-specific sentinel: it is forwarded as-is to providers that declare adaptive in their capabilities (e.g. BytePlus Seedance uses it to auto-detect the ratio from the input image dimensions). Providers that do not declare it surface the value via details.ignoredOverrides in the tool result so the drop is visible.

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Advanced

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action
"generate" | "status" | "list"
default:"generate"
"status" returns the current session task; "list" inspects providers.
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model
string
Provider/model override (e.g. runway/gen4.5).
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filename
string
Output filename hint.
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timeoutMs
number
Optional provider operation timeout in milliseconds. When omitted, OpenClaw uses agents.defaults.videoGenerationModel.timeoutMs if configured, otherwise the plugin-authored provider default when one exists.
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providerOptions
object
Provider-specific options as a JSON object (e.g. {"seed": 42, "draft": true}). Providers that declare a typed schema validate the keys and types; unknown keys or mismatches skip the candidate during fallback. Providers without a declared schema receive the options as-is. Run video_generate action=list to see what each provider accepts.
Not all providers support all parameters. OpenClaw normalizes duration to the closest provider-supported value, and remaps translated geometry hints such as size-to-aspect-ratio when a fallback provider exposes a different control surface. Truly unsupported overrides are ignored on a best-effort basis and reported as warnings in the tool result. Hard capability limits (such as too many reference inputs) fail before submission. Tool results report applied settings; details.normalization captures any requested-to-applied translation.
Reference inputs select the runtime mode:
  • No reference media -> generate
  • Any image reference -> imageToVideo
  • Any video reference -> videoToVideo
  • Reference audio inputs do not change the resolved mode; they apply on top of whatever mode the image/video references select, and only work with providers that declare maxInputAudios.
Mixed image and video references are not a stable shared capability surface. Prefer one reference type per request.

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Fallback and typed options

Some capability checks apply at the fallback layer rather than the tool boundary, so a request that exceeds the primary provider’s limits can still run on a capable fallback:
  • Active candidate declaring no maxInputAudios (or 0) is skipped when the request contains audio references; next candidate is tried. The same guard applies to image and video reference counts against maxInputImages/maxInputVideos.
  • Active candidate’s maxDurationSeconds below the requested durationSeconds with no declared supportedDurationSeconds list -> skipped.
  • Request contains providerOptions and the active candidate explicitly declares a typed providerOptions schema -> skipped if supplied keys are not in the schema or value types do not match. Providers without a declared schema receive options as-is (backward-compatible pass-through). A provider can opt out of all provider options by declaring an empty schema (capabilities.providerOptions: {}), which causes the same skip as a type mismatch.
The first skip reason in a request logs at warn so operators see when their primary provider was passed over; subsequent skips log at debug to keep long fallback chains quiet. If every candidate is skipped, the aggregated error includes the skip reason for each.

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Actions

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Model selection

OpenClaw resolves the model in this order:
  1. model tool parameter - if the agent specifies one in the call.
  2. videoGenerationModel.primary from config.
  3. videoGenerationModel.fallbacks in order.
  4. Auto-detection - providers that have valid auth, starting with the current default provider, then remaining providers in alphabetical order.
If a provider fails, the next candidate is tried automatically. If all candidates fail, the error includes details from each attempt. Set agents.defaults.mediaGenerationAutoProviderFallback: false to use only the explicit model, primary, and fallbacks entries.

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Provider notes

Uses DashScope / Model Studio async endpoint. Reference images and videos must be remote http(s) URLs.
Provider id: byteplus.Models: seedance-1-0-pro-250528 (default), seedance-1-0-pro-t2v-250528, seedance-1-0-pro-fast-251015, seedance-1-0-lite-t2v-250428, seedance-1-0-lite-i2v-250428.T2V models (*-t2v-*) do not accept image inputs; I2V models and general *-pro-* models support a single reference image (first frame). Pass the image positionally or set role: "first_frame". T2V model IDs are automatically switched to the corresponding I2V variant when an image is provided.Supported providerOptions keys: seed (number), draft (boolean - forces 480p), camera_fixed (boolean).
Requires the @openclaw/byteplus-modelark plugin (external, not bundled). Provider id: byteplus-seedance15. Model: seedance-1-5-pro-251215.Uses the unified content[] API. Supports at most 2 input images (first_frame + last_frame). All inputs must be remote https:// URLs. Set role: "first_frame" / "last_frame" on each image, or pass images positionally.aspectRatio: "adaptive" auto-detects ratio from the input image. audio: true maps to generate_audio. providerOptions.seed (number) is forwarded.
Requires the @openclaw/byteplus-modelark plugin (external, not bundled). Provider id: byteplus-seedance2. Models: dreamina-seedance-2-0-260128, dreamina-seedance-2-0-fast-260128.Uses the unified content[] API. Supports up to 9 reference images, 3 reference videos, and 3 reference audios. All inputs must be remote https:// URLs. Set role on each asset - supported values: "first_frame", "last_frame", "reference_image", "reference_video", "reference_audio".aspectRatio: "adaptive" auto-detects ratio from the input image. audio: true maps to generate_audio. providerOptions.seed (number) is forwarded.
Workflow-driven local or cloud execution. Supports text-to-video and image-to-video through the configured graph.
Uses a queue-backed flow for long-running jobs. OpenClaw waits up to 20 minutes by default before treating an in-progress fal queue job as timed out. Most fal video models accept a single image reference. Seedance 2.0 reference-to-video models accept up to 9 images, 3 videos, and 3 audio references, with at most 12 total reference files.
Supports one image or one video reference. Generated-audio requests are ignored with a warning on the Gemini API path because that API rejects the generateAudio parameter for current Veo video generation.
Single image reference only. MiniMax accepts 768P and 1080P resolutions; requests such as 720P are normalized to the closest supported value before submission.
Only size override is forwarded. Other style overrides (aspectRatio, resolution, audio, watermark) are ignored with a warning.
Uses OpenRouter’s asynchronous /videos API. OpenClaw submits the job, polls polling_url, and downloads either unsigned_urls or the documented job content endpoint. The bundled google/veo-3.1-fast default advertises 4/6/8 second durations, 720P/1080P resolutions, and 16:9/9:16 aspect ratios.
Same DashScope backend as Alibaba. Reference inputs must be remote http(s) URLs; local files are rejected upfront.
Supports local files via data URIs. Video-to-video requires runway/gen4_aleph. Text-only runs expose 16:9 and 9:16 aspect ratios.
Single image reference only.
Uses https://www.vydra.ai/api/v1 directly to avoid auth-dropping redirects. veo3 is bundled as text-to-video only; kling requires a remote image URL.
The default grok-imagine-video model supports text-to-video, single first-frame image-to-video, up to 7 reference_image inputs through xAI reference_images, and remote video edit/extend flows. Generation defaults to 480P; single-image image-to-video inherits the source ratio when aspectRatio is omitted. Video edit/extend inherit the input geometry and do not accept aspect-ratio or resolution overrides. Extension accepts 2-10 seconds.grok-imagine-video-1.5 is image-to-video only: provide exactly one image. It supports 1-15 seconds and 480P, 720P, or 1080P, defaulting to 480P; omit aspectRatio to inherit the source image ratio. The preview and dated 1.5 identifiers receive the same validation and are forwarded unchanged.

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Provider capability modes

The shared video-generation contract supports mode-specific capabilities instead of only flat aggregate limits. New provider implementations should prefer explicit mode blocks:
Flat aggregate fields such as maxInputImages and maxInputVideos are not enough to advertise transform-mode support. Providers should declare generate, imageToVideo, and videoToVideo explicitly so live tests, contract tests, and the shared video_generate tool can validate mode support deterministically. When one model in a provider has wider reference-input support than the rest, use maxInputImagesByModel, maxInputVideosByModel, or maxInputAudiosByModel instead of raising the mode-wide limit.

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Live tests

Opt-in live coverage for the shared bundled providers:
Repo wrapper:
This live file uses already-exported provider env vars ahead of stored auth profiles by default, and runs a release-safe smoke by default:
  • generate for every non-FAL provider in the sweep.
  • One-second lobster prompt.
  • Per-provider operation cap from OPENCLAW_LIVE_VIDEO_GENERATION_TIMEOUT_MS (180000 by default).
FAL is opt-in because provider-side queue latency can dominate release time:
Set OPENCLAW_LIVE_VIDEO_GENERATION_FULL_MODES=1 to also run declared transform modes the shared sweep can exercise safely with local media:
  • imageToVideo when capabilities.imageToVideo.enabled.
  • videoToVideo when capabilities.videoToVideo.enabled and the provider/model accepts buffer-backed local video input in the shared sweep.
Today the shared videoToVideo live lane covers runway only when you select runway/gen4_aleph.

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Configuration

Set the default video-generation model in your OpenClaw config:
Or via the CLI: