The phrase you quoted is likely the title of a digital movie file for the 2018 film (Spanish title: Lo que esconde Silver Lake ), starring Andrew Garfield. Movie Details Genre: Surrealist neo-noir mystery and black comedy.
You can find physical copies like the Used Blu-ray on eBay or new editions on Amazon . Technical Specifications Lo Que Esconde Silver Lake [BluRay Rip][AC3 5.1...
A high-definition copy taken directly from a Blu-ray disc. The phrase you quoted is likely the title
Based on the text in your post, the file has the following characteristics: two rear surrounds
▶️ Under the Silver Lake (David Robert Mitchell, 2018) - Facebook
It features Dolby Digital surround sound. This configuration includes six distinct audio channels: front left, front right, center, two rear surrounds, and a subwoofer (the ".1" for low-frequency effects).