I have a link to a YouTube video that used to play a while ago, but has since become private. How can I access it?
you can contact the owner and ask some permissions?
how can we know who is owner of the video?
I agree with Alan. The whole point of making videos private on youtube is to prevent the general public from viewing them. If the video was very popular at one time (e.g. in the news), then you may be able to find it on another site by searching for the title or keywords, but other than that, you're out of luck.
I cannot see any way you can access it, if the uploader has decided to make it private then it surely is private......
you can do thet bot im not sure try this
iphone or ipad or ipod tuch
installed cydia , then open cydia install MxTube after install open it then search your private video.