I might have the same problem - or at least a related one - as the OP.
So i hope that instead of opening a thread of my own, it's ok to add to this one.
I used
this page when i encountered the problem, and for further "testing" as well.
(Same result on
this page, visited and found working with the same browser and installed add-ons 10days ago)
I have both Ghostery and AdBlockPlus installed, alongside NoScript.
There were quite a few updates these last few days, both the Firefox browser as well as all the add-ons (ofc) have had at least one update in that timeframe.
10days ago, i was able to view the vid with Ghostery, AdBlockPlus *and* NoScript (all latest versions of the time) active.
I had, in NoScript, to allow a few sites to run their scripts (whatchop.eu and .com, googleapis.com and animeget.eu) but was able to have simply blocked the rest (with google-analytics prohibited ofc)
Now, i have to "Allow scripts globally" *AND* uncheck "Block every object coming from a site marked as untrusted" in NoScript options to run the vid.
(It won't run if i do just one of these actions)
Or simply uninstall NoScript and rely solely on AdBlockPlus and Ghostery.
"What version of NoScript?"
Tested with the latest 2.6.9.25
"Do you see anything related in the browser console?"
I guess one could call the message
"[NoScript] Blocking cross-site Javascript served from
http://www.animeget.eu/cdn/fun3.jsx with wrong type info application/octet-stream and included by
http://online.watchop.com/s/flownew_med ... p693ut.mp4"
being "anyting related".
The effect should be reproducible; it sure is for me.
(as is the "workaround")
The vid in question plays fine with NoScript unintalled ofc, with AdBlockPlus and Ghostery (latest versions) doing their jobs.
(that site has an awful collection of ads and such if run without any protection at all)
But i would actually like to keep the extra control over which scripts are ran that NoScript gives me - or used to.
Since i did NOT have this issue 10days ago, with the same options and (versions notwithstanding) configuration
and since by basically crippling NoScript i get the result i want (or rather: need),
i would guess that the issue is with (harsher?) enforcement of rules or something within NoScript.
But i can not, of course, exclude any side-effects from wither Ghostery or AdBlockPlus or both, because they've all been changed since 10days ago.
Heck, i can't even exclude bad programming (the console error would suggest that, wouldn't it?) on the site's part to be ultimately responsible.
But since i did not have the problems 10days ago, but now i have them in youtube too (similar - i don't get the "play" button in the flash - but i didn't go into deeper testing with YouTube),
i would say that some behavior has changed within NoScript since then that's causing this.
I even tried downgrading to versions as far as 21 of NoScript, with no change.
This, by itself, would perhaps suggest that the problem we encounter isn't with NoScript after all, but for example with a change in the code the console-error-message points to.
But that, then, wouldn't explain the behavior on other sides, such as YouTube.
Or would it?
And well, since without NoScript i can still see my vids and use the embedded flash as usual, i think it's the likely source of that observed changed behavior.
A workaround exists (which reduces the impact somewhat), but since it involves basically turning off NoScript, i'd rather have this problem getting looked into by you guys.
Thanks a bunch and keep up the (otherwise?) good work!