: This likely refers to a project or file code ("hsoda030") that has been equipped with English subtitles ("engsub").
Outside of technical file naming, the individual components carry different weights in digital culture: hsoda030engsub convert021021 min hot
: This usually refers to a specific file conversion or upload date (February 10, 2021). It helps users find the exact version or "rip" of a file if multiple versions exist. : This likely refers to a project or
: A processing marker denoting a file conversion task or upload batch executed on a specific date (most likely February 10, 2021). hsoda030engsub convert021021 min hot
ffmpeg -i input.mkv -vf subtitles=input.mkv -c:a copy output.mp4