Why fair use feels so uncertain
Unlike a fixed rule, fair use is a flexible legal standard that gets applied case by case, which means two seemingly similar videos can get different outcomes depending on context, market impact, and how much transformation was actually added. That uncertainty is exactly why so many oversimplified "rules of thumb" have spread, even though none of them are legally reliable.
What actually strengthens a fair-use position
Adding substantial original commentary, analysis, or critique -- rather than simply replaying content with light narration -- is what tends to matter most in a real evaluation. Using only the portion of the original necessary to make your point, and being able to explain why that specific amount was needed, puts you in a meaningfully stronger position than any myth-based shortcut.
Frequently Asked Questions
Does giving credit make any use automatically fair use?
No. Crediting the original creator is good practice, but it has no direct legal bearing on whether a specific use qualifies as fair use.
Is there a safe number of seconds I can always use?
No fixed duration is legally safe in every case -- the analysis depends on the four factors together, not a simple time limit.