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DockerFile

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+# Use Python base image
+FROM python:3.9
+
+# Set working directory
+WORKDIR /app
+
+# Copy current files into container
+COPY . /app
+
+# Install Flask
+RUN pip install flask gunicorn
+
+# Expose default port
+EXPOSE 7860
+
+# Run with Gunicorn
+CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:7860", "app:app"]

app.py

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+from pytubefix import YouTube
+from urllib.parse import quote
+from flask import Flask, request, jsonify
+
+app = Flask(__name__)
+
+@app.route('/')
+def hello_world():
+    return "Hello World!"
+
+@app.route('/audio_url')
+def get_audio_url():
+    video_url = request.args.get("url")
+
+    if not video_url:
+        return jsonify({"error": "Missing 'url' query parameter"}), 400
+
+    try:
+        yt = YouTube(video_url)
+
+        # Get best audio-only stream
+        audio_stream = (
+            yt.streams
+            .filter(only_audio=True)
+            .order_by("abr")
+            .desc()
+            .first()
+        )
+
+        if not audio_stream:
+            return jsonify({"error": "No audio stream found"}), 404
+
+        audio_url = audio_stream.url
+        encoded_audio_url = quote(audio_url, safe="")
+
+        return jsonify({
+            "raw_audio_url": audio_url,
+            "encoded_audio_url": encoded_audio_url
+        })
+
+    except Exception as e:
+        return jsonify({"error": str(e)}), 500
+
+
+if __name__ == "__main__":
+    app.run(debug=True)

requirements.txt

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+flask
+pytubefix