I've been Googling around for ways to grab the video from this page (it's nothing naughty, it's a science lecture aimed at kids). It's not supported by my go-to Firefox apps, YTD and Video DownloadHelper. I remember reading about a way to use the Activity window in Safari to find the URL of streaming video, but that's now been replaced by the Web Inspector - and I can't locate the video stream using that. Is it even possible to manually locate and download streaming video URLs any more? If anybody can find the relevant one for the video on the abovementioned page, and explain how it's done, I'd be very grateful.