3 online tools for convert youtube2mp4

1. 1conv.com

The link is as follows:convert youtube video to mp4
the advantage is simple and fast, it can detect subtitle intelligence. If the language of subtitles are not what you want, you can try the link http://1conv.com/youtube-to-mp4?lng=ja suppose you are japanese,and another advantage is website won't limit the download speed.

2. ytmp3.cc

The link is as follows:convert youtube video to mp4
It is very famous, the disadvantage is that it will limit the download speed, and when you download the file you have to see the AD

3. youtubemp4.to

The link is as follows:convert youtube video to mp4
The advantage is the interface is simple.