A IMDB video i deleted off my page is still there. How do i delete it

Hi, Connor Bird. Welcome to the forum of/for the IMDb Community! This is about a trailer, right? I would recommend that you upload a demo reel so as to override the trailer that has been serving in a preferred video's stead. For the IMDb data editors to orphan or otherwise completely purge the trailer, they would need to have strong rationale for doing so. Seemingly the movie to which the trailer corresponds was never published (assuming it was ever completed), so that might be sufficient cause for it to be deleted from IMDb altogether. Otherwise, the IMDb data editors can merely untag people who don't make any appearances in it.

@Connor_Bird  The video is no longer present on your page now.  As @jeorj_euler points out above (thanks), the trailer appeared to be for an unlisted title and so it has been removed.