Ever since I installed the update, I haven't been able to open video files in photoshop. I can't add any sort of video file, they are simply greyed out in the finder search window. This is very annoying, why is adobe on mac so mind-blowingly bad in almost every aspect? Fix the bugs already, we're more than halfway into 2021 and we're finally getting the 2021 updates. No surprise it doesn't work. Im never buying a mac again.
Without any info on what Mac you are actually using and what video files nobody can tell you much. If it's an M1-based Mac, apparently the ongoing adaptation might be the problem, as somehow in the latest builds the Rosetta 2 emulation seems to be broken down. Anything else beyond that speculation wil lrequire better info. in the meantime feel free to install an older version.