If you need to display multiple HD SDI signals in Ventuz, but the full resolution is not required (onair promotion and previews) you could use the DECIMATOR-QUAD from REDBYTE Design. This unit receives 4 SDI signals and combines them into a single output by scaling them down. The resulting SDI output gets captured by the DELTACAST HD boards into Ventuz Professional or Broadcast Edition. The second input of the DELTACAST board could be used to input one out of the four quads in full resolution. In combination with a synchronized 4×1 switcher controlled by Ventuz serial I/O nodes make this a very feasable solution for multiple video inputs.
Btw, these 4 inputs don’t need to be the same format and frequency!
We haven’t tested the box yet, but we would like to know your opinion or test results.
JUST FIGURED OUT THAT THIS BOX ONLY PROVIDES SD ON OUTPUT – BUT STILL INTERESTING!

This thing indeed only outputs SD and is really expensive ($1500) ! Saw it at NAB and got excited because it would’ve been the perfect solution for combining multiple stadium clock feeds into one, then splitting them back out in Ventuz using 2D mapping.