Friday, August 14, 2015

Post 40: Our Box Rehearsal Stage

   I  extended the tabletop in length 24" to the right, and am considering extending it 16" or so in width.I have not finished the edges of the box with wood tips yet because of the dust involved would not help the healing of my cataract surgery. I just used white gaffe's tape. Mary has played in it a little, and there are definite possibilities.



  I have been trying to use multiple projectors with processed images. My main problem still has to do with Isadora not handling multiple HD streams very well. 

  I am running v2 of Isadora in beta as an early adopter,and have been emailing back and forth with the guys at Troikatronix about various issues. They have sent me new GPU based actors to test that are supposed to handle HD, but I still find there is a lag, and the Luma Key Actor does not actually seem to work properly. Also, some of my favorite "Actors" like Delay and Difference are simply not available yet in the GPU version.
  I ordered a new Black Magic DeckLink Mini Recorder PCI card to see if it might do a better job than the "old" Intensity Pro I have used for years. The new card has one HDMI and one SDI input:




   I know that Ralph swears by SDI and uses it to connect his live cameras, the main advantage being that the signal can travel further. I hope it will also be faster. 
   I had great hopes for HDMI, but have been disappointed with the results in the field.     It is OK for a fixed Home Theatre installation, but the connectors are fragile and get disconnected easily in a show situation. I regret the old screw on VGA and DVI plugs. In fact, I also ordered some DisplayPort to VGA cables to see if that might be more reliable.My projectors are only 1280x720 anyway. That is what Christophe is using at the Festival Theatre to project his sets, and they look fine.
   In order to connect my video camera, I also had to order an HDMI to SDI converter, and an SDI cable: