Elusive chord fingering, help requested

I hated to start a thread just for this but it’s driving me crazy. In this video, I can’t figure out how to make the F#dim chord he’s making. It’s at the part where he sings, “right”, somewhere at the 0:17 and also at 1:10 mark.

One way is like this, which I can do but he’s not doing that. His fingering looks more like this.

However, it looks like he is employing his pinky. And if you watch his strumming hand it looks like he is strumming the top (thinner) strings which the above diagram doesn’t allow. It sounds like it too. Regardless, when I make that variation, it doesn’t sound like when he plays it.

It may just be my lack of skill, but I’m hopeful someone here can help.

I was going to ask hubster, but the videos won’t play. I get Forbidden.

If it’s F# dim 7, he could be using the open E on the first string.

To me it looks like he’s basically doing this:

I don’t think he’s playing the middle strings.

Yes, if you freeze it it looks like that’s his fingering (but to me it looks like his 4 finger is on the 5th fret), regardless pick up your guitar and strum the chord in the pic you posted. Does it sound like what he’s playing? I can’t make it sound anything like that.

That’s what drove me to post this, it looks straightforward but I can’t make it sound right.

Then it would be F# half-diminished 7, or F# min7, flat 5

I’d say you’ve got the bottom three strings correct, but I think he’s using his fourth finger to play the A on the first string followed by the F# on the first string. I don’t hear the D# in that chord the way he’s playing it.