Hi guys!

I hope you can help me.

I’m a classical organist, and I’m trying to make organ concerts accessible to a wider audience.
My plan is to have a projector in the church that shows what I’m doing in real time - instead of looking at some organ pipes with me hidden behind them, the audience will actually see what I’m doing.
I think this idea has a lot of potential, but I’m not totally sure what equipment to get.

My requirements are:
a total price of hopefully not more than 3-4000$
A HD camera with no more than 1 frame of latency (or whatever is possible)
A hd projector with a brightness of minimum 3000-4000 ansi lumens
Wireless video (not gonna roll up cable every time I play a concert, esp. not in long complicated churches)

I’ve been researching a lot, and so far this is what I’ve come up with:

Pretty cheap solution; get a Marshall CV506 camera, transfer HDMI through a teradec ace 500 to a projector with minimal hdmi lag like the Optoma HD39HDR (16ms latency at 60fps). (Alternately don’t buy the wireless and just use a 100m SDI cable and a BM Mini SDI->hdmi Converter in front of the projector)

To make this setup nicer, I could get a SDI camera - cheapest option is propably the BM Micro studio camera 4K, connect that to a no-latency sdi streaming thing, and then find a suitable projector. I’m however unable to find any projector that takes SDI in a price range of 1000-1500 usd.





These are all my ramblings. Tell me what I should do. I’m very obsessed with latency, since I don’t want people to see me play a key 100ms after I’ve played it - that would be too annoying to watch.



As a bonus I’d love to put a Atem mini in between the camera and the projector to do a lower 3rd, but I’m unable to find out exactly what latency that introduces.

Don't focus too much about latency. 99.9% of the audience will not even notice a 5 frame offset.
Each hardware device in the chain will add 1 frame.
Most wireless transmitters will add a lot more latency than cables. Running cables is part of the job. I wouldn't rely on wireless (unless you have way more budget).
Consider HDMI over Fiber which handles very well long distance runs. Or classic SDI (even with HDMI to SDI / SDI to HDMI converters)

Personal opinions :
- static shots are boring to death.
- if you want to produce interest, go for a multicam setup
- a 3 cams / 3 angles would be a good starting point, even with cheaper cams (like prosumer camcorders) rather than a single 4K cam which won't be used at full potential anyway
- I'd do something like:
shot 1 : from aside, medium shot on your face and your hands on the keys
shot 2 : reverse angle but focusing on your feet
shot 3 : something creative, certainly from above, with something like a GoPro maybe with wide angle lens taken from the pipes giving a perspective view on the instrument and you playing it
- This implies a switcher with auto mix capability (unless you have a director). vMix could do the job using the "playlist" feature or with scripting. But vMix could introduce a bit more latency than a hardware switcher.
- Thinks like the ATEM can't auto switch AFAIK, but if you have time to switch from time to time, why not ? After all, it's only 4 more keys and your right foot is available sometime ! ;o)

I have no advice regarding small beamers. I use Christies and Barcos 20000 or 40000 lumens or LED walls... Not the same league.

Don't know how churches are like in Denmark but I did produce a ceremony in a huge French cathedral lately, it's way more complicated than regular venues or concert halls... Light is a critical point...

Not sure to be very helpful here, sorry... Maybe some other guys will have other advices.

@Mavik


IMAG stands for Image Magnification. Here there is no streaming at all, the idea is to provide the audience physically present with a better view on the performance. So latency matters even though there will be at least 2/3/4 frames minimum.


No need to do that here. It's only for the people in the church. A pipe organ is loud enough for a church, thus there is no PA at all.

z cam E2 is a good option, but I suspect there is not enough budget to go this way (and I'm not absolutely sure about the auto focus)