They're baguettes. It would be super weird to have a hotdog in a cafe like that.

There are two lengths I'm familiar with though I'm not an expert, the short for regular hot dogs one commonly sees on supermarket shelves in the USA and the long for foot long hot dogs and those breads in the photograph appear longer than the long or maybe just much wider than the long ones I've seen. Also, having a hot dog at a sit down restaurant would be slightly unusual for two adults in my experience, it's more a street/fair food or sports audience vendor food for people on the go that is easily eaten without a plate and utensils for the most part.