For goodness sake, I don't see why OP doesn't understand what he's done wrong. Whenever you do exposure or indeed anything sexual of any kind you always obtain consent. There are no two ways about it whatsoever. If you don't have explicit consent, you simply don't proceed with whatever activity you're doing. This exposure on xhamster, as has been stated, in illegal is most jurisdictions and if this were in the UK, I could well see this coming under the description of revenge porn if construed in such a way. It's worth adding that this is not just about the law but about common decency as well and it's OP's behaviour which irritates me with others who are into exposure play and gives those of us who are into exposing guys a bad name. I should say here that I always obtain explicit permission from men, and I only expose men, before exposing them and anything that is sent to me before consent is given is treated in the strictest confidence and as being for my eyes only. I also make sure that men are fully aware that this could have a negative impact on their life.
I'll leave you with a tale about a kinky couple I know fairly well who live in my local area and a tale which shows the impact that exposure can have on one's 'real life'. Now this couple were rather kinky and one day the guy let his mistress expose his pics and info on tumblr. Fine he thought, he explicitly consented and she was happy to post them. A couple of months down the line he applied for a job at the company I work for. We ran a background check and found everything, his nudes, his info etc. We obviously couldn't give him the job because he was judged as potentially bringing the company into disrepute if we hired him. From speaking to him a little while later, it turns out that his pics and info were shared over 1000 times on tumblr and that he was struggling to get a job as a result of the exposure. Now he consented to the original act of exposure and you can argue that rights and wrongs of that, but he consented and so he's got to take the consequences now sadly. The poor guy whose video you want to upload to xhamster did not consent at the time and it's completely wrong of OP to seek to expose him in a way which could have detrimental and unforeseen consequences on his life, especially when he didn't even consent to you doing that.
EDIT: Sorry everyone for the rant, but it pisses me off when people do dick-ish things like this