licensing
How can I determine what license a video is under on youtube?
<p>This <a href="https://www.youtube.com/watch?v=t36jZG07MYc&amp;list=PLUl4u3cNGP63oMNUHXqIUcrkS2PivhN3k&amp;index=2" rel="nofollow noreferrer">video_1</a> claims it is under "Creative Commons BY-NC-SA", while this <a href="https://www.youtube.com/watch?v=4qfdCwys2ew" rel="nofollow noreferrer">video_2</a> does not.</p>

<p>How can I determine what license a video (such as video_2) is under on youtube.</p>

<h2>You find the copyright owner and ask them</h2>

<p>Unfortunately, only the copyright owner can grant licences and the onus is on you to demonstrate that you have a valid chain of licences back to them.</p>

<p><a href="https://www.youtube.com/static?template=terms" rel="nofollow noreferrer">Youtube terms of service</a> define the minimum rights that a video's uploader grants to a youtube user:</p>
<blockquote>
<p>License to Other Users</p>
<p>You also grant each other user of the Service a worldwide, non-exclusive, royalty-free license to access your Content through the Service, and to use that Content, including to reproduce, distribute, prepare derivative works, display, and perform it, only as enabled by a feature of the Service (such as video playback or embeds). For clarity, this license does not grant any rights or permissions for a user to make use of your Content independent of the Service.</p>
</blockquote>
<p>This grant allows anyone to view uploaded videos on youtube, and does not provide any permissions for using them in any capacity outside of youtube.</p>
<p>Unless a particular video is marked as being released under another (additional) license, these terms would apply.</p>
