Look at the names of the files immediately before ( btb_07_0119 ) and after it ( btb_07_0121 ) to establish the subject matter.
If you are looking for a summary or the "solid content" of this specific file, please check the following: btb_07_0120.mp4
Right-click the file and select Properties (Windows) or Get Info (Mac) to see if there are any tags or comments in the "Details" tab. Look at the names of the files immediately
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