MActionMuxUpdated June 2026

How do I upload video to Mux from URL?

Short answer: Drop the "Mux → Create Mux Asset from URL" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 3 Mux actions

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Source URL input_url	string	Required	Public URL Mux can fetch. HTTPS recommended.
Playback Policy playback_policy	options	Optional	—
MP4 Support mp4_support	options	Optional	Whether to generate static MP4 renditions in addition to HLS.

Sample request

{
  "input_url": "https://my-cdn.example.com/video.mp4",
  "playback_policy": "{{trigger.playback_policy}}",
  "mp4_support": "{{trigger.mp4_support}}"
}

Returns

{
  "data": {
    "id": "asset_abc",
    "status": "preparing",
    "playback_ids": [
      {
        "id": "play_abc",
        "policy": "public"
      }
    ]
  }
}

Use these fields in downstream nodes for routing, logging, or error handling.

FAQ

Questions about Create Mux Asset from URL.

What does the Create Mux Asset from URL action do in Mux?

Ingests video from a publicly accessible URL. Mux transcodes asynchronously; poll Get Asset until status=ready or use webhook callback. For "video already in S3 → ingest into Mux for streaming" workflows.

What inputs does Create Mux Asset from URL require?

Required: Source URL. Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Mux returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Create Mux Asset from URL support batch operations?

Yes. Run Create Mux Asset from URL inside a Loop node to process arrays. Tiny Command handles Mux's rate limits automatically so you don't have to throttle manually.

How do I upload video to Mux from URL?

The fields this action accepts.

Apps that pair well as the trigger for Create Mux Asset from URL.

Questions about Create Mux Asset from URL.

Other Mux actions.

Send create mux asset from url from your workflows.