Reference Audio

The Reference Audio node brings audio into a workflow from one of three sources: a YouTube video, an uploaded file or a direct link. For a YouTube video, the node extracts the sound track for you, and a player on the node lets you check the audio before you run anything else.

When to use it

• You want the audio of a YouTube video, for example a song for reference or a talk to transcribe.
• You want to transcribe narration, or get word-level timings with Forced Alignment.
• You want source audio for a voice workflow, such as Voice Changer or Dubbing.

Quick start

Output

Reference Audio is a starting node: it needs nothing wired into it. The output, Audio, is the URL of the extracted, uploaded or linked audio.

Settings

What happens when you extract from YouTube

1. Nodaro fetches the video's details first, so you can confirm that the link points at the right video.
2. The node extracts the audio track. The status moves from ready to extracting to complete, or to failed.
3. A player appears on the node when the extraction is complete.

Content rights

Extracting the sound fetches the link, so it is an import of that link. The extraction waits for the content rights box, ticked for that link. See Content rights for what the declaration says.

• The box stays ticked only for that link, and only for this session.
• Each extraction confirms the declaration again. A changed declaration unticks the box.
• You can tick the box on the node or in the settings panel. A link written into the node by an assistant, an import or a template waits for the box in the same way.
• A node saved while it was extracting, for example a copy of it or a reloaded page, waits for its box again.
• A run never fetches the link. It reads the extracted file.
• An uploaded file or a direct link to a file needs no box.

A YouTube extraction also records the length of the audio on the node. Edit Plan uses that length for its cost estimate when this node is its main source. Without a recorded length, Edit Plan estimates at its largest length bucket, 180 minutes. Uploads and direct links do not record a length.

Tips

• Listen before you run. The player is the quickest way to confirm that you extracted the right video.
• Upload WAV for quality. When file size does not matter, WAV gives the next node the cleanest sound.
• For a link to a video's page, use Video URL. The Video URL node downloads the video or audio behind a link to a video's page.

Troubleshooting

Nothing is extracted. The content rights box under the link is not ticked. Tick the box, and the node extracts the audio.

The YouTube extraction failed. Check the link and click Extract Audio again. If it keeps failing, set Source to Direct URL and use another link to the same audio.