You could probably run such an algorithm locally by logging data locally then determining a type of video which could then be requested from the server. On top of that to get even more data privacy you could store the data collected for this as different numbers in a 3d array or other data structure and then use some form of math to determine what would be best based on that so any personally identifiable information will be really obfuscated and nearly impossible to use for anything other than the algorithm it’s designed to be used by. This would then allow users to not only fine tune their own personal algorithm parameters, but could open the door for allowing people to write their own algorithms or systems to do this.

might be a good idea for someone to make such a thing as TikTok has been getting closer and closer to getting banned in more and more places. There may very well be a twitter-like opportunity for someone with such an app to swoop in and gain some market share