Caught my husband sneaking out

Save those videos of him coming in and out and ask him how was his night? If he went anywhere? Give him an opportunity to speak his truth. If he’s in denial show him the videos.

Just outright ask him where he went last night and see what his answer is

Does he ever get to hang out ? Like does he have buddies? Everybody is entitled to free time. But he should of let you know upfront if that was the case.

I'm curious what you call sneaking out? Was he tiptoeing out of the house as you saw on the camera?
I'm also curious if you were up all night yourself monitoring the camera to see exactly when he went out or took your time to go through the whole recording to know what he's doing when you are away?

If you have had a feeling that he's being sketchy, then there is already shaky trust from the beginning and surveillance when you are meant to be taking time to enjoy family and rest shouldn't be spent doing investigative work.
Also, it could even be far from whatever you might be thinking.

I think You should be enjoying your week away and remove your mind from what's going on at home. You can deal with all that when you get back.

Honestly I would just ask him. It's easy to jump to conclusions but really it's no actual proof that he's doing anything.

I had an ex who used to sneak out the house, I would hear the door click, I would call him, and his phone would be engaged meaning he was on a call when I questioned him about this behaviour he would gaslight me and tell me I was crazy and needed sectioning. The point to this is a few years I later he had an accident and i found out that he had been cheating the whole of our relationship even when he was in hospital paralysed he was cheating with a woman who knew all about me. Don't ignore your intuition. We know when our person is being sketchy because the red flags are there, don't ignore them, and don't let no one make you doubt yourself. I hope this isn't the case for you, and he's not doing anything sketchy, and it's all a misunderstanding.

There is no actual proof that he did something but it also seems obvious. Where could he go from 1 to 4?
I think I would wait until I had a bit more proof so he won’t turn the conversation around and make you feel that you’re the crazy one for thinking that.