I am a Professor at University. For the sake of selling my prepared video lectures out?

I have encrypted the video files using zip password protection. But the password protection is not a secure way for selling the videos as the video fi

I have encrypted the video files using zip password protection. But the password protection is not a secure way for selling the videos as the video files along with the password can be redistributed around the web. Or it can be possible that the buyer could unzip the video files and redistribute the unzipped video files on internet (YouTube e.t.c). I need a permanent solution about video-file security so that my video lectures cannot be published illegally.

or:I have encrypted the video files using zip password protection. But the password protection is not a secure way for selling the videos as the video files along with the password can be redistributed around the web. Or it can be possible that the buyer could unzip the video files and redistribute the unzipped video files on internet (YouTube e.t.c). I need a permanent solution about video-file security so that my video lectures cannot be published illegally.

or:Em, i think you can upload your lectures to a web and let others view it on line. You can create accounts for each user and make the videos undownloadable.

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