Youtube video download URL

Question

I wrote a program that gets youtube video URL and downloads it
Up today I did this:
1. get video \"token\" from \"/get_video_info?video_id=ID\" like:

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Answer 1

After a lot of failed tries, this github repositories help me:

https://github.com/rg3/youtube-dl

Get the url only like:

youtube-dl 'https://www.youtube.com/watch?v=bo_efYhYU2A' --get-url

download an mp4 and save as a.mp4 like:

youtube-dl 'https://www.youtube.com/watch?v=bo_efYhYU2A' -f mp4 -o a.mp4

Good luck.