I want to unpublish videos after they have been online for 1 year. This also mitigates the amount of content that is stolen in case of a breach.

This could be 2 fold:

a) unpublish a video for everybody on postingdate + 365 days

b) unpublish video per subscriber on joining date + 365 days

a) this mitigates the amount of videos that can be stolen in a breach. Imaging having 5 years worth of content being stolen by somebody with a 1 month subscription. Having gliding 365 days of content is still a lot of value for the price of a 1 month subscription. Upsell could be that when the unpublish date appoaches, members get notified that they can now unlock the video for a price, and then it is tehir account forever.

b) This also mitigates the stealing risk, so this is an interesting option as well. Same with the 'unlock before it is gone'