You just need to copy page URL, or right click on the video to select "Copy video address", then paste the URL into the search box of Distill Video (http://distillvideo.com) and press “Start” button. After waiting almost 2-3 seconds, the video section showed, choose your preferred format and right click the "Download" button, then click "Save link as..." to download the video or audio into your computer or phone. So you also can call it "tweet video downloader".
The web browser Safari can be served as a Safari YouTube downloader, which offers an easy way to download any HD 720P/1080P videos on YouTube as well as other web. And for a successful YouTube videos download on Mac OS X, please make sure you have the latest version of Safari. Follow the detailed guides and learn how to download YouTube videos on Mac using Safari.
When downloading, the program does try to hide some things. Paste in the URL for a YouTube video and the analysis engine runs and shows only a few download options. Click the Gear icon, then the Show All button and you'll see more—including ability to get a 4K 3,840-by-2,160 file in WebM format. The 577MB WebM test download took about 6.75 minutes. Grabbing playlists was possible, but you must adjust download settings one video at a time. The confusing interface makes it hard to go back to the other videos in the playlist.

That said, with Android it is possible to install apps without going through Google. The latest is InsTube – Free Video and Music Downloader just for Android—you can only get it at InsTube's site. You download the APK (Android application package) file to sideload on an Android device. Find it in your device's downloads and click it to install. (You may have to go into your security settings and enable "Unknown sources.") There is a similar side-load app from YTD.
If you are looking for a free online video downloader which supports downloading any video online from any site using URL, you definitely can not miss VidPaw Online Video Downloader. VidPaw is able to convert videos from YouTube, Vimeo, Instagram, Facebook and so on to many formats like MP4 in high quality. No software is needed and easy to use on both Windows and Mac.
As one of the best YouTube video downloaders on the market, Jihosoft 4K Video Downloader supports downloading videos from almost all video streaming sites (such as YouTube, Facebook, Twitter, Instagram, Vimeo, Dailymotion, etc.). What sets it apart from online websites is that it allows you to download entire YouTube channels & playlists and save them in HD, 2K, or even 4K quality. In addition, it has a one-click download mode that can apply your settings or preferences to all downloads, which will greatly save your time and energy.
Updated: YouTube no longer supports 4K video player in Safari according to the feedback from Reddit users. This is because of the VP9 video codec problem that safari doesn't support. So Mac users won't access to 4K video on YouTube in native 2160p resolution until Apple updates Safari to support VP9 codec. Or they can turn to another 4k video player like 5KPlayer or YouTube downloader for Mac to capture the 4K videos for viewing offline.
SaveFrom.net has made a name for itself over the last few years. It can do web-based downloads, but also provides software to install and a browser extension, which it pushes. It doesn't support 4K, but few helper sites do—going to a 1,440MB WebM file is an option, but it doesn't come with audio—the only format that does is 720p MP4s. Nor can you use SaveFrom.net to make an MP3. Of course, those options are in the downloadable software.
Step 3: Choose your targeted video format from the top right corner. There are a lot of formats available. Including MP4, AVI, MKV, and MOV. After this, click on the conversion icon on the right of the chosen file. If you have to convert all the videos in the chosen list, simply choose the “Convert All” option on the bottom right of the main window.
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