Remove Silence

Overview

Remove silent gaps from audio or video.

Uses FFmpeg silencedetect to find quiet intervals, then trims and concatenates the non-silent segments together.

Endpoint

POST https://eranol.com/api/v1/ffmpeg/audio/remove-silence

Request Body

{
  "url": "https://cdn.example.com/podcast.mp4",
  "padding": 0.1,
  "silence_thresh_db": -30,
  "min_silence_duration": 0.5
}

Response Example

{
  "job_id": "f595b9ad-1e15-4452-b7c2-8f8ff09c0a34",
  "status": "pending",
  "message": "Job created. Poll status_url for progress.",
  "job_type": "caption",
  "result_url": "https://eranol.com/api/v1/ffmpeg/result/f595b9ad-1e15-4452-b7c2-8f8ff09c0a34",
  "status_url": "https://eranol.com/api/v1/ffmpeg/status/f595b9ad-1e15-4452-b7c2-8f8ff09c0a34"
}

Use Cases

1. Clean up podcast interview

Remove long pauses and dead air from a raw interview recording to tighten pacing.

Request Body

{
  "url": "https://cdn.example.com/interview-raw.mp4",
  "silence_threshold": -35,
  "min_silence_duration": 0.8
}

Response

{
  "job_id": "1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status": "pending",
  "message": "Job created. Poll status_url for progress.",
  "result_url": "https://eranol.com/api/v1/ffmpeg/result/1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status_url": "https://eranol.com/api/v1/ffmpeg/status/1406c589-a1f4-45d5-8745-aae07bc4de38"
}

2. Trim awkward pauses from a tutorial

Remove any pause longer than 1 second from a screen-recording tutorial to keep viewers engaged.

Request Body

{
  "url": "https://cdn.example.com/tutorial-raw.mp4",
  "silence_threshold": -40,
  "min_silence_duration": 1
}

Response

{
  "job_id": "1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status": "pending",
  "message": "Job created. Poll status_url for progress.",
  "result_url": "https://eranol.com/api/v1/ffmpeg/result/1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status_url": "https://eranol.com/api/v1/ffmpeg/status/1406c589-a1f4-45d5-8745-aae07bc4de38"
}

3. Audio-only silence removal

Strip silent gaps from a raw voiceover MP3 before using it as a narration track in a video.

Request Body

{
  "url": "https://cdn.example.com/voiceover-draft.mp3",
  "silence_threshold": -38
}

Response

{
  "job_id": "1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status": "pending",
  "message": "Job created. Poll status_url for progress.",
  "result_url": "https://eranol.com/api/v1/ffmpeg/result/1406c589-a1f4-45d5-8745-aae07bc4de38",
  "status_url": "https://eranol.com/api/v1/ffmpeg/status/1406c589-a1f4-45d5-8745-aae07bc4de38"
}

Error Codes

Code	Meaning
401	Missing or invalid API key
402	Insufficient credits
422	Validation error — check your request body
429	Rate limit exceeded — slow down requests
500	Internal server error — try again or contact support