user18120: Is there a way to extract a person from a video without having a blue- (or green-)screen?
Any software which can do this?

user16884: Final Cut Pro X has a plugin called Pro Removal that can remove moving things from the scene on fixed camera shots.
Also there is a tutorial for After Effects that shows how remove objects from scene using the tracker.
Also you can clean frame by frame using Photoshop or similar if you have a good amount of time to spend or a crew to help you in the task.

user6207: If you have a frame where the person does not exist, you can use a tool called a difference matte. (You'll need to scroll down to the section titled "Difference Matte Effect" for a description.) It will find a difference between the frame without the person, and the frames with a person and remove areas that are the same, leaving only the difference (in this case the person). As linked, After Effects has such a tool. Many other video editors have it as well.

18120: <p>Is there a way to extract a person from a video without having a blue- (or green-)screen?</p>

<p>Any software which can do this?</p>
 16884: <p>Final Cut Pro X has a plugin called <a href="http://store.pixelfilmstudios.com/product/proremoval/" rel="noreferrer">Pro Removal</a> that can remove moving things from the scene on fixed camera shots.</p>

<p>Also <a href="https://www.youtube.com/watch?v=lAWv1XFrrTQ" rel="noreferrer">there is a tutorial</a> for After Effects that shows how remove objects from scene using the tracker.</p>

<p>Also you can clean frame by frame using Photoshop or similar if you have a good amount of time to spend or a crew to help you in the task.</p>
 6207: <p>If you have a frame where the person does not exist, you can use a tool called a <a href="https://helpx.adobe.com/after-effects/using/keying-effects.html" rel="noreferrer">difference matte</a>. (You'll need to scroll down to the section titled "Difference Matte Effect" for a description.) It will find a difference between the frame without the person, and the frames with a person and remove areas that are the same, leaving only the difference (in this case the person). As linked, After Effects has such a tool. Many other video editors have it as well.</p>
