In the file-sharing community, the "Scene" (the organized group of release groups) has strict rules. Web-DL 2160 is considered the only acceptable source for streaming content because it is verifiable and consistent. Unlike a capture card rip, a Web-DL has a checksum that matches the original streaming server.
Why does that matter? Because unlike a Blu-ray rip (which requires physical disc cracking and re-encoding) or a camcording (filmed in a dark theater), a WEB-DL is the original file the streaming service sends to your TV. It’s a perfect, bit-for-bit copy of the broadcast stream.
Despite losing to Blu-ray in raw bitrate, Web-DL 2160 has a cult following. Here is why: