I think I might have a similar issue. I just upgraded to vB 3.8.3, and I'm finding that valid video links convert to standard URL tags, not AME tags. I don't use the WYSIWYG editor, so I don't think it has anything to do with the color tags, if that makes a difference.
Not sure if it's important, but when it changes to URL tags, the link is displayed as if embedding were disabled:
Attachment 102400
Also, I noticed that if I manually change the URL tags to AME tags, it shows up correctly, BUT if I try to edit the post again, the AME tags revert back to URL tags. But the ame_strip function seems to be doing this, so maybe it's on purpose, with the expectation that it will be converted back to AME tags?
Anyhow, maybe I'll jump back to the previous version of AME, but I thought I'd let you know about it
Thanks for all your great work with this mod, by the way!