Note: Some CamCaps threads use "obfuscated" or encrypted HLS streams. For encrypted streams, you need the encryption key (usually a .key file). Finding this key requires advanced network sniffing with tools like ffmpeg combined with manual key extraction from the page’s JavaScript.
Solution: The video is likely an HLS (m3u8) stream. Use the ffmpeg or Developer Tools method instead.
Software like JDownloader 2 or Internet Download Manager (IDM) is specifically designed to recognize media on a webpage.
Blog
