How to convert YouTube video to MP4
There is an app from DVDVideoSoft com.
1. Find a video you want to convert to MP4 on YouTube.com and copy its URL address from your browser address bar. Alternatively make right mouse click on the video and select 'Copy video URL' from the menu.
2. Go to https://www.dvdvideosoft.com/youtube-to-mp4-converter and paste the link into the box. Click the 'Convert to MP4' button.
3. Next click Download to save the converted from YouTube to MP4 video to your computer or phone.