I only know the one from WP-Script. Their plugin lets you scan all videos for any broken videos and it supports all major tubes like PornHub, RedTube, XVideos, YouPorn, XHamster and it also works with YouTube and probably others but I am not sure, you would have to dig this out.
It saves your time, because you do not have to manually check posts, which is especially overwhelming when you have a big collection of videos like you. Sometimes it has some bugs, but it gets fixed and for $24 and a no recurring payment it is a useful software to have.