>I don't have direct experience, but I'd bet Taser doesn't let podunk police departments really "erase" video.

The NYTimes article you posted hints at an uncomfortably cozy relationship between Taser, law enforcement and local governments...

    Yet as Taser works to sell cameras and software to more departments, 
    it is coming under fire for questionable business practices. In some
    instances, it has paid police chiefs to travel to Taser conferences. 

    In other cases, chiefs who have bought Taser products have joined 
    the company as consultants shortly after leaving public service. 
    And several cities have awarded contracts to Taser without 
    competitive bidding.

I wouldn't trust Taser to act as faithful or impartial stewards of this data, when it's in their best business interest to maintain a positive relationship with the very entities whose corruption it exists to expose.