The Twitter it's mostly a text-heavy platform. most of the platform's content is text, but it supports pictures, video as well as live streaming.
Many videos shared on Twitter can also be found on other sites that offer better projection, e.g. YouTube. But if you want to download a video from Twitter, you will find that it is not that easy. You can't do it directly from Twitter, but there are many web applications that can do it easily and quickly.
One of these online services is Twitter Video Downloader.
Visit the page and give her address URL of the Tweet containing the video. Try to avoid using any tweet that quotes the original. If you can use the original tweet and click the download button.
Twitter videos tend to be short, so your video can be ready in seconds. If it's big, it will go down in about a minute. The online application gives you the option to choose the video quality. Select the resolution in which you want to download the video and it will open in the program tours.
Once the video is open in your browser, you can download it. This method works regardless of the browser you use but the way the final video is taken may differ slightly. In the Chrome, you can click the button with the three boxes at the bottom right of the video and select the Download option. In other Chromium-based browsers, you should look for the same boxes. For browsers that are not developed based on Chromium, try right-clicking on the video and selecting the 'Save As' option. The video is saved as MP4.
And plagiarism?
If you download a video to share on a different platform, there is no problem. However, if you intentionally remove parts of the video, e.g. the watermark and try to pass it as your own job, you better not do it.
Note: If a tweet has been deleted and you still have its URL, you will not be able to download the video it contained.