How do you get a video that is not yours onto video editor?

To get a video that is not yours onto a video editor, you need to first ensure you have the legal right to use that video, such as obtaining permission from the copyright holder. Once you have the necessary rights, you can download the video from its source or use a screen recording tool if downloading is not permitted. After that, import the video file into your video editing software by dragging it into the project or using the import function. Always respect copyright laws when using someone else's content.