Comment YouTube Audio Quality - Bad Production (Score 1) 42
It's just that the entire YouTube is appallingly bad.
A lot of the audio production in individual videos is really bad. This isn't anything to do with YouTube per se, not their compression algorithms or other features. A lot of YouTubers have absolutely no concept of microphone placement, of using audio compression, of reducing background noise. All of which are things which will drastically affect audio quality and the ability of a speech-to-text model to create subtitles.
It would be nice if YouTube would normalize all the uploaded videos to one set standard. Note I'm not suggesting that they compress the videos as that might change the intended presentation of professional audio productions. I just mean peak-finding normalization which could be implemented losslessly and without breaking existing video links.
Having said that, when I look at my own channel - and I am not claiming to have great audio; I have a host which would destroy a lavalier microphone in mere seconds. YouTube's subtitling is really good. It automatically switches between English and French and Hebrew, and even with a fair bit of background noise (welding, grinding, cooking, crowd noise, music) it generally gets the text correct. So I don't know what the original complaint is, except that it's not perfect. Well, guess what, neither is human hearing. How about that famous Jimi Hendrix line, "Excuse me while I kiss this guy."