I looked at that page & I am not getting the same content in the VDH menu. I don't know
why. You can see what I got in the attached image Video #1, I scrolled the menu down to
where the highlighted variant was so I could download it. VDH dutifully spent a few
minutes downloading whatever was behind that menu entry. But when the download ended, it
gave me the same error you got.
Time for plan B. I turned on the M2TS switch like you did. Then I reloaded the
extension just so VDH would approach the web page fresh. Then I reloaded the video page.
VDH now showed me essentially the same items except now it said M2TS instead of MP4. See
attached image Video #2. The highlighted variant downloaded successfully. But it
probably doesn't surprise you that VLC wouldn't play it for me. Too bad, because there's
clearly labeled audio-only variants, one of which I would have downloaded next.
Time to drop back 10 & punt. I've got one last trick up my sleeve & that's called a
manifest. I wondered if maybe this web site uses manifests. Not all web sites do, so I
was just taking a wildass stab in the dark. So, I opened the Network Monitor in Firefox
& reloaded the web page, as you can see in the attached image Manifest. When I saw that
I said to myself, "Self," I said, "this looks exactly like the operas, right down to the
funkyass URLs." Sure enough, when I opened the manifest by double clicking on the first
entry in the Network Monitor, it gave me a manifest that is so much like the operas I
think the same people who did the operas did this one. (I refer to the operas in the
past tense because, sadly, the Metropolitan Opera's free stream initiative has ended.)
So I downloaded an "opera" called Rooster Teeth. How? You're going to have to bite the
bullet (do roosters have teeth that can bite bullets?) & read the homeric epic located
here:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/8V2cRB-bcK4
Sorry, there's no shortcuts. Either you're really motivated to learn what's there or
you're going to just give up. Your choice. The short version is that I used ffmpeg to
download the video stream as one file & the audio stream as another, thus creating an
"opera" from this Rooster Teeth video. I used a REXX script I constructed so I wouldn't
have to keep retyping the ridiculously non-intuitive ffmpeg parameters every time I got
an opera. I think of my REXX script as a wrapper for ffmpeg. I played the 2 files I got
synchronously in VLC & it plays fine, with both video & audio for the whole 25:43.
When I say ffmpeg, I'm talking about the tool you can get from
ffmpeg.org, not the
captive ffmpeg that Michel embedded in VDH. Or maybe it's in the CoApp. I'm not quite
clear on that detail. But it's not particularly important. The point is, you have
something called ffmpeg as part of VDH/CoApp but it's not good for doing this sort of
thing. I've tried. It doesn't work.
Now the question is, given that this perfectly good manifest is here, why doesn't VDH put
up variants that download? It did for the operas. What's the deal here? I used the
manifest to get the parts using ffmpeg. You could say I kind of did it manually. Why
can't VDH do the same thing under program control? You'd think it would. I'd be most
interested to get Michel's take on this.