Proof of concept extractor script for cda.pl video links, reverse engineered from updated player.js

extractor.py

import json
import urllib.request

from urllib.parse import unquote
from bs4 import BeautifulSoup


def decrypt(a: str):
    a = unquote(a.replace("_XDDD", ""))
    b = []

    for e in range(len(a)):
        f = ord(a[e])
        b.append(chr(33 + (f + 14) % 94) if 33 <= f and 126 >= f else chr(f))

    a = "".join(b)
    
    a = a.replace(".cda.mp4", "")
    a = a.replace(".2cda.pl", ".cda.pl")
    a = a.replace(".3cda.pl", ".cda.pl")
    
    return a


if __name__ == '__main__':
    url = "https://www.cda.pl/video/416037128"

    # Trying to avoid as much trouble as possbile by "mocking" a real browser request
    request = urllib.request.Request(url, headers={
        "Referer": "http://www.cda.pl",
        "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:73.0) Gecko/20100101 Firefox/73.0"
    })

    with urllib.request.urlopen(request) as response:
        bs4 = BeautifulSoup(response, "html.parser")
        tags = bs4.findAll("div")

        for tag in tags:
            if tag.has_attr("player_data"):
                player_data = json.loads(tag["player_data"])
                break

        file = player_data["video"]["file"]

    print("https://" + decrypt(file) + ".mp4")

Check the demo here: https://cda.codebucket.de/

Please note that currently some CDNs are working very slow, I am working on a workaround in the meantime.