How about something like this? It’s professional, clear, and lets the recipient know exactly what’s been done.
The phrase "checked: prepare a useful feature" appears to be part of a metadata tag or a prompt used in specific file-sharing or subtitle-database contexts, though it does not refer to an official software feature. familie immerscharf english subtitles checked
If the subtitle file is smaller than 50kb, it is probably auto-generated. Skip it. The "checked" versions usually have a text file included confirming human review. How about something like this
Premise and themes (interpreting likely intent) Pro tip: If the subtitle file is smaller
: Subtitled Weisse Schleier und harte Eier ( White Veils and Hard Eggs ), featuring a wedding-themed plot. Part 6 : Also known as Die Sex-Lawine . Part 8 : Subtitled Der Vogel-Wettbewerb . Subtitle Information