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Except that these videos are playing on your local machine. With the most advanced DRM mechanism possible it is nearly as trivial to simply record the video output.

There is no reason to spend developer time making a complex mechanism that is no more secure than a simple xor.



Recording the output is not the same as extracting the DRM-free stream


This is educational content not blockbuster films. Recording the output in this case would be more than sufficient.




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