: An update to the bitrate or resolution of the original file.

The most compelling word in the string is "patched." In the world of digital media, a file is rarely left raw. "Patched" implies intervention. It suggests that the original file was modified before distribution. This could mean:

When viewed as a single artifact, this string represents a mutated copy . It is not the studio master; it is a consumer-grade product that has passed through the hands of an aggregator, been stamped with a date and ID, and surgically altered ("patched") to change its viewing experience. It is a perfect example of how digital media evolves as it travels from creator to consumer.