Websites are usually designed with a graphical user interface (GUI). You see pictures, text, and buttons.

Files found in open directories are completely unverified. You may spend hours downloading a massive file only to find it is of terrible visual quality, has audio that is out of sync, or is an entirely different movie. Safer and Legal Alternatives

While it looks like technical jargon, it is actually a powerful search string that bypasses standard streaming sites.

When combined, the query instructs Google to look for unsecured web servers that list the movie file directly for download. How Open Directories Work

To understand this phrase, you have to break down the Google dorking commands being used:

You can rent or buy the film in high-definition MKV-equivalent quality on YouTube, Apple TV, or Google Play.