Yes, you can. You won't have to bother about copyright complaints since you own the video. Twitch videos are always live streams, so there's a possibility of a few interruptions like bathroom breaks, lunch breaks, etc.  On the other hand, YouTube prefers well-edited videos, so you should capitalize on both platforms' strengths. YouTube demands you have 1000 subscribers and have bagged 4000 hours of watch time, so if you've ticked these boxes, go ahead and apply for AdSense and earn.