I've answered a question about PBS not too long ago. The answer is buried toward the
bottom of this thread:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/8V2cRB-bcK4
That is a really long thread, and as proud as I am of the work we all did in that one, I
don't really expect you to read the whole thing . . . unless you're especially dedicated
to learning something new. The discussion of the PBS issue is in the last posts in the
thread (today), which are dated 2022/9/22, a bit over a month & a half ago. That
discussion includes a description of how I got video, audio, & subtitles for that PBS
show.
I see in there that I retrieved an audio track with HLS as M2TS enabled in the VDH
settings. Just within the past 24 hours I've discovered that I probably could have
repaired the audio that I thought at the time was broken. That new learning is
documented over here:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/vl50CBaxUyg
There are other threads mentioned in there that might also be helpful. This stuff isn't
totally straightforward. You might have to do rather a lot of reading, even though I
said that other thread was long & mostly not relevant. There's no way out of it. You
have things you have to learn. I have every confidence that, as an enlightened human
interested in things natural & scientific, you can deal with these annoying tech issues.
Once you've gone through this learning curve once & you look back, you'll see it's not
that hard.