He started filming me

Me and my husband were being intimate a couple of days ago. I was giving him head and I closed my eyes to I guess focus more. When I opened my eyes, my husband had his phone front camera recording. I kind of froze, because he had never done anything like this before with me. I didn’t want to make him uncomfortable, so I finished with him even though I didn’t want to be recorded. I was thinking what if we ever got a divorce what would happen with the video. I thought about what if he filmed me again. I told him later that I was uncomfortable with that fact that he had a video of me giving him head. He told me it wasn’t a big deal because we were married.

How can I convince him to delete the video without making him like I’m attacking him or doing to much.