Hey there, im going to post/ask here about "viewtube" that i seen alot of dicussion on here about. I was going to try this out today.. and I installed viewtube with TamperMonkey. After reading posts here and the instructions on the site. I set it up with Windows Media Player 9, and I installed the last official supported version of win XP "K Lite Basic" Codec Pack.
But i have 2 problems. 1st: it works with most videos so far that are "not" avc1 according to the "stats for nerds" window on the normal youtube player screen. But... any videos that are avc1 (or when the plugin-container.exe starts up) ...then it wont work, and i can't figure out why...here we go again. :(
I'll keep clicking play but it wont ever do anything, so i right click, click "error details" and always get this, saying "cant connect to server" - I obviously have all the codecs and such, so..i dont understand what's wrong. Any ideas ??
https://i.imgur.com/VitpGgj.png
edit: if i try "direct video link" - it still wont play, but instead error details say "Player does not support the format your trying to play" ..but how ?? - i have the plugin there obviously. I got it from user "grey_rat" in this thread, with version "1.1.2.0"
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2nd problem: I have a "disable polymer" script for TamperMonkey as well, so that it will always force the classic youtube, it does worry me that you guys saying that it may stop working next month. 
I think this is somehow conflicting with the viewtube, because like the page sort of it refreshes itself after a few seconds removing the "polymer" from the end of the URL. and when that happens, the whole entire video player disappears from the screen ...and about 30 seconds later, Viewtube will say "cant get video element"
https://i.imgur.com/GvZ58pc.png
Is it possible to somehow stop the page refresh so it doesnt remove that part from the URL when the page loads ? (I wouldnt have a clue what code to add to the script) - I always have to mash the STOP button on the browser before it reloads itself or whatever-the-heck, so that it doesnt delete the viewtube part.