Sat Feb 01, 2014 2:10 am
You could try the UpDownCross miniconverters. They will take in 1080p and output whatever you need. AND they have a reference input that will help you sync up your cameras. Of course, they are HD-SDI, so you have to convert from HDMI to HD-SDI first. Pretty soon you've spent a ton on converters, and could buy a different switcher.
There is a benefit to this, though. It is a lot easier to run coax than HDMI cables, so put a HDMI converter at the camera, run your video on coax, and convert at the switcher to 1080i (or whichever format you use).
EDIT: after looking at the specs, the UpDownCross passes on the frame rate, as is, when doing any 1080p formats. There seems to be no setting for 1080p to 1080i. This means you might have to step down to 720p in order to make it work with your switcher. I like 720p, so this wouldn't bother me, but you may not like that.
The manual does not state, in any way, what the effect of reference does to the throughput. If this was designed with any kind of logical design in the reference circuit, it really ought to re-clock the input to match the reference frame rate, so that if you used a 1080i reference, it should create a 1080i output. But the manual does not confirm this. It doesn't actually speak of the effect of the reference at all, so who knows?
I have an UpDownCross or two, and could check this for you next week if you need me to. (Or a BMD rep who knows what the reference will do to the signal can let us know!).
Scott R Smith
BMD Stuff I use: ATEM 2-M/E, 4 x ATEM PS 4K, Broadcast Videohub, 6 Hyperdeck Pros, 4 Hyperdeck Shuttles, Multidock, Smartscope Duo, Smartview, Intensity Extreme, Decklink Studio, and lots of Miniconverters and Open Gear Converters.