Thanks for the auto sub I didn’t know it is a feature.

How did you get ytdlp to work? It used to work for me and I just did a fresh install a week ango and now youtube is giving me auto/cookie/sign in errors (captcha I presume?) when it didn’t before

At the moment I'm getting "HTTP Error 429: Too Many Requests" (with yt-dlp-2025.9.5 installed in a virtualenv via pip), which has been happening more often recently. I got it when downloading the Spanish subtitles file after successfully downloading the English one, so yt-dlp didn't continue on to try to download the video. But YouTube has also been working unreliably for me in the browser.

Edit: a few minutes later it worked, although I didn't let it download the whole video, because it was huge. The subtitle file is 12631 words processed with http://canonical.org/~kragen/sw/dev3/devtt.py. That's about 38 minutes of reading.

One drawback of the transcript in this case is that it doesn't identify the speaker. It doesn't seem to contain many errors.

The key point seems to be this one (18'06"):

> But what you what you what you want to do is use guidance and use feedback from the system under test to optimize the search and notice when things have interesting things have happened, things that aren't necessarily bugs, but that are rare behavior or special behavior or unusual behavior. And so the test system can see that something interesting has happened and follow up opportunistically on that discovery. And that gives you a massive lift in the speed of finding issues.

> And the way that we're able to do that is with this sort of magical hypervisor that we've developed which allows us to deterministically and perfectly recreate any past system state.

> So people generally think of the value of that hypervisor as like any issue we find is reproducible. Nothing is nothing is works on my machine. If we find it once we can repro it for you add infin item.

As a general rule, you should update yt-dlp before using it. They release new versions very frequently to work around new walls on YouTube and other platforms. An update usually solves this kind of issue for me, even if I've updated just a few days ago.

(I haven't tried it today so can't speak to whether this is a complete solution in this particular case.)