Heygen Video Download Missing Binary Data Causes YouTube 400 Error

Below is some guidance on ensuring that your workflow passes the binary data correctly:

1. Maintain the Binary Data Property

When the HTTP Request node downloads your video, the node stores the binary data in a property (by default often called "data"). To pass the video correctly to the YouTube upload node, both nodes must agree on the binary property name. In the YouTube node's settings, look for the field where you can specify the binary property (sometimes labeled as “Binary Property” or similar) and set it to the same name as the HTTP Request node’s binary property.

2. Check File Details

Make sure your binary data item includes the required metadata for a file upload:

• A valid file name (for example, heygen-video.mp4).
• An appropriate MIME type (such as video/mp4).

If these aren’t present, the YouTube API might reject the upload.

3. Use a Set Node if Needed

If the binary property name differs between nodes or if additional data is required, you can add a Set node between the HTTP Request and YouTube node. Here’s an example of how you might copy or rename the binary property:

JSONCopied
{
  "nodes": [
    {
      "parameters": {
        "values": {
          "string": [],
          "number": [],
          "boolean": []
        },
        "options": {},
        "binary": [
          {
            "from": "data",
            "to": "videoFile"
          }
        ]
      },
      "id": "set-node",
      "name": "Set Binary Property",
      "type": "n8n-nodes-base.set",
      "typeVersion": 1,
      "position": [
        700,
        520
      ]
    }
  ]
}

In this example, the binary data from the HTTP Request node (named data) is copied to a new binary property called videoFile. You’d then configure the YouTube upload node to refer to videoFile.

4. Verify YouTube Node Configuration

Review the YouTube node’s documentation to confirm which binary property it expects for video uploads. Then, update the node’s settings accordingly. For instance, if the YouTube node has a parameter for the binary property, set it to the name carrying the video (either data or the renamed property).

Summary

• Ensure consistency in the binary property name between nodes.
• Verify that the binary item contains the correct file name and MIME type.
• Use a Set node to rename or copy the binary data if necessary.
• Confirm the YouTube node’s configuration to match the supplied binary property.

Following these steps should help transfer the binary data properly so that the YouTube upload node recognizes and processes your Heygen video without error.