For consumers and archivists, these strings are essential for several reasons:

The inclusion of "EN" and "JAVHD" in the keyword highlights a major shift in the Japanese adult media landscape. Historically, JAV was difficult to access outside of Japan. Today, studios are increasingly catering to international markets by providing subtitles and partnering with global VOD (Video On Demand) platforms. This has led to a surge in standardized "internet-ready" file naming conventions like the one seen in your query.

Sites like the Internet Adult Film Database (IAFD) use these codes to link performers to their filmographies accurately. Industry Trends: The Shift to Global Streaming

Often used by automated upload scripts to signify the date the entry was added to a specific database or website.