Quite simply; I've never come across this aspect ratio in video before and I just wanted to know if there is a standard in video (that I'm unaware of) that routinely uses this aspect ratio.
For a little extra background: an outsourced company in the States produced a video for us (we're based in the UK) and they delivered the video in 1920x964 and I really don't want to go back to them and ask 'why?' in case I seem like an idiot, so I'm checking with you gals and guys first :D
I know I've never heard of that ratio but I didn't know if it were more standard either in the US or in a different branch of film-making that I'm not party to.