During recording, it will show how much is the size of the screencast file. This method is best if your video is short because screencast video can get large fast. The second method is to use a screen recorder like Movavi Screen Recorder to extract video from website. In this case, you can use a video converter to convert the downloaded video to other preferred formats. It may not provide the format in which you want to download the video. There will be options in the format you can download your video. After it is installed and activated, it will show a Download button on anywhere that has a video. The first method is to install a YouTube video downloader extension on your browser. The good news is that there are several ways to watch your favorite movie offline. It can be when you want to visit a public place that has no WiFi amenity and you wish to relax by watching your video there. Most people now go online to watch videos but there will be times when you want to watch a video offline.