What rights does a person have to reproduce online video content?

I have been involved in the creation of the content in front of the camera. I want to utilize other website’s media players other than youtube’s.

It’s his creative work (not copyrighted), but I want to share on a sites outside of youtube and I am getting resistance from the creator. I’ve already leached the video from youtube using a Fire Fox extension.
Can I reproduce the content for use in another online player?
Am I required by law to get permission from the creator?