YouTube Caption Downloader API

A simple Flask API to download and summarize YouTube video captions as plain text.

Features

• Download YouTube captions (subtitles) as .txt via API.
• Supports multiple languages.
• Summarize any text using a state-of-the-art transformer model.

Installation

1. Clone this repository.

2. Install dependencies (Python 3.7+):

   pip3 install flask youtube-transcript-api

Note: If you have multiple Python versions, use pip3 and python3 for Python 3.7+.

Usage

1. Run the application:

python app.py

2. Get Captions:

The API will return a JSON with the video ID and captions.

Send a POST request to /api/get-caption with a JSON body:

{
  "link": "https://www.youtube.com/watch?v=YOUR_VIDEO_ID",
  "languages": ["en"]
}

• link: YouTube video URL or ID (required)
• languages: List of language codes (optional, default: ["vi", "en"])

3. Summarize Text

The API will return a summary and token information.

Send a POST request to /api/summarize with a JSON body:

{
"text": "Your text to summarize here"
}

4. Example using curl

Get Captions:

curl -X POST http://localhost:5000/api/get-caption \
     -H "Content-Type: application/json" \
     -d '{"link": "https://www.youtube.com/watch?v=YOUR_VIDEO_ID"}'

Summarize Text:

curl -X POST http://localhost:5000/api/summarize \
     -H "Content-Type: application/json" \
     -d '{"text": "Paste your text here"}'

📚 Source & Credits