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ffmpeg Node

n8n Node for some Ffmpeg functionality

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Overview

This node provides audio transcoding functionality using ffmpeg. It allows users to convert audio files from one format or codec to another, adjusting parameters such as codec type, bitrate, and number of audio channels. This is useful in scenarios where audio files need to be standardized for compatibility, optimized for size or quality, or prepared for specific playback environments.

Practical examples include:

  • Converting an MP3 file to AAC with a specific bitrate for mobile streaming.
  • Downmixing stereo audio to mono to reduce file size.
  • Changing the audio codec to match requirements of a target platform or device.

Properties

Name Meaning
Audio Input A valid audio URL or the name of the input binary field containing the audio to transcode.
Audio Output Name The name of the output binary field where the transcoded audio file will be stored.
Audio Codec The audio codec to use for transcoding (e.g., mp3, aac, wav).
Transcoding Options Collection of optional settings:
- Audio Bitrate: Target bitrate in kbps (default 128).
- Audio Channels: Number of audio channels (default 1).

Output

The node outputs the transcoded audio file in a binary data field named as specified by the "Audio Output Name" property. The json output contains metadata about the operation result, but the main content is the binary audio data ready for further processing or saving.

Dependencies

  • Requires an API key credential for accessing the underlying ffmpeg service.
  • Depends on an external ffmpeg-based API or service that performs the actual transcoding.
  • No additional environment variables are explicitly required based on the static code analysis.

Troubleshooting

  • Invalid Audio Input: If the input audio URL is invalid or the specified binary field does not contain audio data, the node will fail. Ensure the input is correctly provided.
  • Unsupported Codec: Specifying an unsupported audio codec may cause errors. Verify supported codecs with the ffmpeg service documentation.
  • Incorrect Output Field Name: Using an output field name that conflicts with existing fields might overwrite data unintentionally.
  • API Authentication Errors: Missing or incorrect API credentials will prevent the node from functioning. Confirm the API key is configured properly in n8n credentials.

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