Original quality, without re-encoding. Download HD video of 1080P, 26K aK, 4K, nd 8K. Support most poplular audio or video websites including Youtube, Twitter, Vimeo, Facebook, Dailymotion, SoundCloud, Instagram, Liveleak, Break, Imgur, TED, CNN, Mashable, 1TV, reddit, IMDb, ESPN, Flickr, Bandcamp, 9gag, VK.com, Izlesene, TV.com, Tiktok, Odnoklassniki, Izlesene, Udemy, ...
Another workaround: Go back to the desktop and try AnyTrans ($39.99 for a single computer), a file manager for iOS devices that has an integrated downloader supporting 900 sites, including YouTube and Facebook. It'll transfer the videos to the iPhone for you over the USB cable. Even if you don't pay for AnyTrans, the download option remains and is free forever.
There are lots of videos without audio formats available with DistillVideo. You just need to copy the URL of your preferred video, then paste the URL into the search box of Distill Video and press “Start” button. In the video section showed, there is "Video only", click "More" on the right side, select the format you like and right click the "Download" button, then click "Save link as..." to download the video without audio onto your computer. If you are using browsers of the smart phone or tablet, just Touch and hold the "Download" button, then click "Download link" to save the file to your device.
Multi-lingual 4K Video Downloader (4KVD) is frequently updated and features clear download links on the program's website; no ad traps here. The software does what it advertises in a simple interface: grabs videos up to 8K in quality and downloads to plenty of formats. Just copy a YouTube URL and click the Paste Link button to get started. 4KVD will even grab subtitles, entire playlists, and all the videos in a channel to which you subscribe. The sites supported are limited to the big names like YouTube, Vimeo, Facebook, and a few others, but covers most of what you need.