But the METADATA in video files is often limited to what the video format supports. This is why you can google for a year and not find this. Instead you have to learn about video formats, file types and which support metadata you can drop into that video. Or you cheat and use a subtitle file (SRT) to hold this detail.
I'm not just trying to trim videos and add effects;
I'm trying to add a tag to the first ten minutes of a video, labelled "Intro," "8mm," "high color contrast,"
much like one would add tags to a Windows Explorer file;
and then I mean to manipulate and organize videos based on these terms;
as well as categorize and librarianize them by all means possible.
What software can I download, for free, that will meet these terms?