There are new anticircumvention rules from the US Copyright Office. Several are very good changes, such as allowing you to bypass a technological protection measure to use snips from a movie or video if your purpose is educational or for comment or criticism, and there's more flexibility for phone apps if interoperability is the goal. Keep in mind that copyright infringement is separate from DMCA analysis, so you still have to be careful about staying within the fair use boundaries when making a documentary. But at least now you can legally access.