How can I upload a generated audio file from filesystem-v2 to S3 for Twilio playback?

Below is one effective approach:

1. Read the Binary File:
   Use the Read/Write Files from Disk node (available on self-hosted n8n) to load the file from the filesystem. In that node, set the File Path parameter to the location indicated by your filesystem‑v2 string. (Keep in mind that the exact file path pattern might differ based on your n8n setup; for Docker you might need an absolute path, e.g. starting with /tmp/, whereas in an npm installation it could be different.)

2. Upload to S3:
   Chain the AWS S3 node (or any other cloud storage node you’re using) and choose the Upload File (or equivalent) operation. In the AWS S3 node, configure the required credentials, select your target bucket, and set the S3 key (or file name) for the uploaded file. Make sure to pass along the binary data from the previous node (typically stored under a field like data).

Below is an example workflow outline in JSON that demonstrates this process:

JSONCopied
{
	"name": "Move Audio from Filesystem to S3",
	"nodes": [
		{
			"id": "1",
			"name": "Manual Trigger",
			"type": "n8n-nodes-base.manualTrigger",
			"typeVersion": 1,
			"position": [250, 300]
		},
		{
			"id": "2",
			"name": "Read Audio File",
			"type": "n8n-nodes-base.readWriteFile",
			"typeVersion": 1,
			"position": [450, 300],
			"parameters": {
				"operation": "read",
				"fileSelector": "filesystem-v2:workflows/EZaIJp9tFPFq02wY/executions/578/binary_data/a025d226-0ea1-4ce2-b9ac-6d4146c4c0c1"
			}
		},
		{
			"id": "3",
			"name": "Upload to S3",
			"type": "n8n-nodes-base.awss3",
			"typeVersion": 1,
			"position": [650, 300],
			"parameters": {
				"operation": "upload",
				"bucket": "YOUR_S3_BUCKET_NAME",
				"fileName": "desiredFolder/your-audio-file.mp3",
				"binaryPropertyName": "data"
			},
			"credentials": {
				"aws": "YOUR_AWS_CREDENTIALS_ID"
			}
		}
	],
	"connections": {
		"Manual Trigger": {
			"main": [
				[
					{
						"node": "Read Audio File",
						"type": "main",
						"index": 0
					}
				]
			]
		},
		"Read Audio File": {
			"main": [
				[
					{
						"node": "Upload to S3",
						"type": "main",
						"index": 0
					}
				]
			]
		}
	}
}

Notes:

• Ensure that the file path provided to the Read/Write Files from Disk node correctly reflects your environment (running n8n on Docker versus directly via npm might affect the path).
• Double-check that the binary property name (here set as "data") in both nodes is consistent.
• If you’re not on a self-hosted instance or if you’ve configured n8n to store binary data externally, you might modify the workflow. However, when using filesystem‑v2, this approach ensures you’re reuploading the audio file so it’s accessible from S3 for Twilio playback.

This workflow effectively downloads the binary file from your local filesystem and reuploads it to S3, making it accessible for other services like Twilio.