Actions11
- Filters and Effect Actions
- Metadata Actions
- RTMP Restreaming Actions
- Transcoding Actions
- Video Processing Actions
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 of a podcast episode before publishing.
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 target 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.
- The node depends on an external ffmpeg-based service or API to perform the actual transcoding.
- Proper configuration of this API credential within n8n is necessary for successful execution.
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 source is correct and accessible.
- Unsupported Codec: Specifying an unsupported audio codec may cause errors. Verify that the chosen codec is supported by the underlying ffmpeg service.
- API Authentication Errors: Missing or incorrect API credentials will prevent the node from connecting to the transcoding service. Confirm that the API key is correctly configured.
- Resource Limits: Large audio files or high bitrate settings might exceed service limits or timeouts. Consider reducing bitrate or splitting large files.