For you reference I wanted to point out that this is a Video project.
I am designing a menu in which the user can choose 1 of 4 formats for SD (standard definition) and two options for HD (high definition).
I'm suggesting this solution because:
In SD mode, there are 4 options, let's say Option1, Option 2, Option 1a and Option 2a. The labels are very similar (a requirement) and, in order to avoid confusion, I wanted to downplay the display.
In HD mode we only have two options. We are moving towards adoption of HD format. Two options aren't enough for a drop-down and eventually these two are the only options we will be offering.
Does it make sense?