app.py

from flask import Flask, send_file

app = Flask(__name__)

@app.route('/get_video')
def get_video():
    return send_file("https://videos.pexels.com/video-files/2098989/2098989-uhd_2560_1440_30fps.mp4", mimetype='video/mp4')

if __name__ == '__main__':
    app.run(debug=True)