Agree, I think having at least a screenshot is a must. Or even an animated gif if it's some interaction (e.g. see plug [1]) you're trying to present.
Re-uploaded the GIF file for him, hopefully this one loads for you.
My problems are admittedly very niche, and I will get to see everything when I'm at work tomorrow (if my VPN was working, I could see them now...drats). Thanks for the try though!
I'm obviously careful about this, there are good alternatives that work (for now) in china, e.g. Skydive rather than Dropbox. But even I have to we YouTube for video uploads.
BTW, nytimes.com and other whistle-blowers also get blocked.
There are 2 other videos where hopefully you can see this happening. Or, better yet, you can try it running it yourself on Windows or Mac.