: This is the original broadcast date formatted as YYMMDD . Decoding this gives us October 17, 2011 . This tells us exactly when the episode aired on television.
To appreciate this file, we have to look back at the hardware limitations of 2011. Broadband internet speeds were a fraction of what they are today. Storage space on hard drives was expensive, and mobile devices or standalone DVD players required specific, low-overhead codecs to decode video smoothly.
. Across the world, a "release group" had captured the broadcast, stripped the commercials, and encoded it into a lean 700MB
This is where the filename becomes human-readable.