YT "Your browser does not currently recognise ..."

[Brutte]

EEVBlog #1252 runs fine but EEVBlog #1253 gives me:

Your browser does not currently recognise any of the video formats available

Is that "upgrade" justified?
I must admit I run XP SP3 + Firefox 52.9.0 (highest supported), do I have to upgrade OS to watch EEVBlog on YT?

[Brumby]

I just fired up my old laptop that still has XP on it ... and I couldn't run either video on Firefox

They work on Chrome, though.

... do I have to upgrade OS to watch EEVBlog on YT?

No.  Just get Chrome.

[bitwelder]

After several hours from the release of the video is the issue still present?
Maybe the video formats you can watch are considered 'less popular' and so YT postpones transcoding into those at a later time?

[retiredcaps]

You can always download the video to watch offline.  I use youtube-dl on linux.  It's available for Windows.

https://ytdl-org.github.io/youtube-dl/index.html

[Brutte]

After several hours from the release of the video is the issue still present?

Now it works flawlessly. Peculiar.