ScrapeBox- Youtube Comments

Hi,

Im a newbie, my goal was to try and scrape comments from youtube and post to my channel, using different proxies etc...

Any ideas if this is possible, and what would be my search term:
Ex. site: youtube + "comment_servlet?all_comments=" + keyword

This was not working for me...? and i dont want to purchase tubeautomator. Are there any free tools for youtube?

Thanks

I'm interested on getting the same thing, anyone?