Btb_07_0120.mp4 -

If you can or provide the name of the course/platform it belongs to, I can likely find the specific lesson summary or key takeaways for you.

Some internal stock libraries use these alphanumeric strings to track licensing and metadata for specific clips. How to Find the "Solid Content"

It may be a raw asset from a "B-roll" or "Behind the Scenes" (BTB) folder, with "07" representing the project number and "0120" representing the shot or sequence number.

Look at the names of the files immediately before ( btb_07_0119 ) and after it ( btb_07_0121 ) to establish the subject matter.

Are you seeing this in a course like Coursera, a company portal, or a specific YouTube playlist?