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POST
/
api
/
download
Start Download
curl --request POST \
  --url https://api.example.com/api/download \
  --header 'Content-Type: application/json' \
  --data '
{
  "url": "<string>",
  "quality": "<string>",
  "download_type": "<string>",
  "format_id": "<string>"
}
'
{
  "download_id": "<string>",
  "id": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://mintlify.com/mario1027/offlinetube/llms.txt

Use this file to discover all available pages before exploring further.

​
Request Body

​
url
string
required
The URL of the video to download (supports YouTube and other platforms via yt-dlp)
​
quality
string
default:"720p"
The desired quality for video downloads (e.g., “720p”, “1080p”, “480p”). For audio downloads, this parameter is ignored.
​
download_type
string
default:"video"
The type of download. Valid values:
  • "video" - Download video with audio
  • "audio" - Download audio only
​
format_id
string
default:""
Optional specific format ID from yt-dlp. If provided, this exact format will be downloaded. If empty, the best format matching the quality will be selected automatically.

​
Response

​
download_id
string
Unique identifier for the download task. Use this ID to check status, retrieve the file, or cancel the download.
​
id
string
Alias for download_id (both fields return the same value)

​
Example Request

cURL
curl -X POST https://your-api.com/api/download \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
    "quality": "1080p",
    "download_type": "video"
  }'

​
Example Response

{
  "download_id": "550e8400-e29b-41d4-a716-446655440000",
  "id": "550e8400-e29b-41d4-a716-446655440000"
}

​
Download Process

When you initiate a download:
  1. A unique download_id is generated
  2. The download task is added to the queue with status "pending"
  3. The download begins in the background
  4. The task progresses through statuses: pending → downloading → processing → completed
  5. Use the List Downloads endpoint to monitor progress
  6. Once status is "completed", retrieve the file using Get File

​
Notes

  • The download happens asynchronously in the background
  • FFmpeg must be installed on the server for video processing
  • For video downloads, the output format is always MP4
  • Audio downloads support multiple formats (m4a, mp3, opus)
  • If the URL is a playlist, all videos will be downloaded

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