I finished rendering my video in High Quality, Default Render, 1366*768 video resolution... and when I checked the finished rendered video in the replay_videos folder. I saw that in the beginning all the skins were replaced with Steve or Alex skins. Except at the end when the skins come back to normal at some point. It didn't happen like this on the first video I rendered. So this is my second video, and I'm inexperienced and I vaguely know that you can do animations and such....
So maybe it's a glitch? Or problem? I also deleted the video and re-rendering it and it still didn't solve it.
Images: http://imgur.com/Cq0cQqV,Djr8Yk2