I have a portal svmedia.net/en , which allows you to download videos from YouTube quickly and for free. In your browser, you need to highlight the page address and then right click and select "Copy". In the mobile application of YouTube, you can use the "Share" icon-arrow-left button, which is located under the video. Next, you need to select "Copy link." Paste this link into the field on the service and a quick upload will be done