What's so interesting? They have a default value, most likely for testing.
I find it very hard to believe anyone thinks "child_porn.avi" is a compelling filename for child pornography. I'd imagine they'd be more like "<age> <gender> <explicit act>.mp4".
It's software sold to law enforcement/intelligence agencies, and it is designed explicitly to plant false evidence. Even post-Snowden I think that qualifies as interesting.
Look at the change. They went from a unix-like file system path name to a Windows one. Considering they call to_utf16le_binary_null I'm going to guess they just wanted it to look reasonable (and perhaps not crash?) on Windows.
I find it very hard to believe anyone thinks "child_porn.avi" is a compelling filename for child pornography. I'd imagine they'd be more like "<age> <gender> <explicit act>.mp4".