Trim Audio

Extract a specific time range from an audio file, discarding everything outside it.

When to use

• Create a clip — isolate a highlight or excerpt from a long recording.
• Remove silence — cut leading/trailing silence from a podcast or voiceover.
• Prepare for concatenation — trim individual segments before joining with audio.concat.

Inputs & outputs

Input modality	Audio file (URL)
Output modality	Audio file (GCS URL)
Max input duration	3 hours
Max input size	2 GB

Parameters

Param	Required	Description
start	yes	Start time in seconds (non-negative). 0 = beginning of file.
end	yes	End time in seconds (positive, must be > start).

Examples

Extract the first 60 seconds

{
  "type": "audio.trim",
  "input": { "audio_url": "gs://infery-prod-media/example/podcast.mp3" },
  "params": { "start": 0, "end": 60 }
}

Extract a mid-section highlight (90–150 s)

{
  "type": "audio.trim",
  "input": { "audio_url": "gs://infery-prod-media/example/podcast.mp3" },
  "params": { "start": 90, "end": 150 }
}

Related capabilities

• audio.transcode — re-encode the trimmed output to a different format
• audio.concat — join multiple trimmed segments end-to-end
• audio.pipeline — combine trim with other audio ops in a single execution
• video.trim — equivalent operation for video files

{
  "start": 0,
  "end": 60
}