When I set subtitles on I notice a lot of things go missing. It is about the pace of the dialogue and getting enough meat on to the screen that can be read without pausing the video.

For the hard of hearing that can be quite a lot, but those of us who just want to catch what was swallowed by the pace and lack of annunciation it can be frustrating, because even the textifyers have problems hearing, even with the script. As for programmes that don't have scripts, like panel shows - particularly the political satires - it is getting worse! Regardless of my slowing down, the fashion is for less clarity and jump cuts. Not for verbal understanding. IMNSHO