I've got the "Do Not Remove HTML5 Tags" option turned on but I find that the editor is still stripping those tags; at least when it comes to the old style of YouTube embedding video code.
The option to keep IFRAME tags does work though.
I tried adding the OBJECT and PARAM tags to line 193 of the tinymce-advanced.php script where all the other tag exceptions are set but that didn't work.
Any help would be appreciated.
Thanks.