Yes. My QuickTime player used to show up and start playing the videos. Now just a bunch of text shows up. Does it on any site I go to when I try to play video.
Does the text have a message? or it just random text flying across the screen? can you give us an example of a site with video that used to play that doesn't anymore? then someone can navigate there on their iPhone and see what happens. It may be the site and not your phone.