Hi there. The same question with title? How can I check youtube copyright my video before upload to youtube. I re-up some video on this. I can create some test channel but If upload more than 15 minutes, you need verify channel with the mobile-phone. So How can I check this? And one more question, what tool you do to convert video. I have try some tools but size on video increase so much, arround 3 times with original video. Thanks alots.