No. There is no magic number of seconds at which using someone else’s work suddenly becomes acceptable.
Eight seconds. Ten seconds. Fifteen seconds. It doesn’t matter.
Fair use is not really about the length of the clip. It is about why you used it. Are you using someone else’s work because it is necessary to criticize, explain, or comment upon it—or are you relying on that work to make your own production more entertaining, polished, or valuable?
The Law Does Not Use a Stopwatch
The supposed “15-second rule”—formerly the “10-second rule,” and before that the “8-second rule”—is one of the most persistent copyright myths online. The law no more decides fair use with a stopwatch than it decides it by round of applause.
Fair use requires a fact-specific examination of four factors: why and how the material is being used; the nature of the original work; the amount and importance of what was taken; and the effect of the use on the market for the original.
Duration matters under the third factor, but it is not a safe harbor. A short excerpt can still take the most valuable or memorable part of a work. A longer excerpt may sometimes be defensible when the amount used is reasonably tied to genuine criticism, commentary, news reporting, teaching, scholarship, or research.
Adding an introduction, shrinking an image, changing the speed, or speaking over a clip does not automatically make the use fair. The question is what the new work is actually doing, how closely its purpose overlaps with the original, how much it takes, and whether it substitutes for the original or interferes with a legitimate licensing market.
Copyright Law and Platform Enforcement Are Different
A platform allowing a clip to remain online does not mean the use is legally defensible. A platform flagging or restricting a clip does not necessarily mean the use is infringing. Platforms can detect, demonetize, restrict, or remove material before any court examines whether the use was fair.
If you are deciding whether to use a particular excerpt, begin with the Can I Use This Clip? scenario and the broader Copyright & Fair Use Resource Center.
The Practical Takeaway
Do not begin with, “How many seconds can I use?” Begin with, “Why do I need this particular material, and how much is reasonably necessary to make my point?”
Press play with a purpose. Don’t let a short clip become a long problem.
If the clip matters to your production—or to your channel—Matthew B. Harrison and Harrison Legal Group can review the proposed use before publication, rather than after a claim arrives.
For the larger framework, read Playing the Clip. For a fact-specific review, tell me what you’re dealing with.