Live Broadcast Production

tbanucci

tbanucci

Well-known member
Not sure what forum topic to put this in....

There is a local venue near me that is having me investigate the possibility of recording a live event and broadcasting it to other rooms on their campus, simultaneously switching between 4 cameras. The recording and switching of the event is no problem for me when it comes to audio/video. Even redirecting the signal out of the switch is easy so that the result can be seen on a TV a few yards away. However, the venue wants me to redirect the event video to one room that is 300 feet away, and another room that is 1500 feet away, where an additional 2000 people will be watching the program. Here lies my problem.

What is the best way to get audio and video to these two rooms? Do I have wireless options? The two external rooms have ethernet between them, can I use this to my advantage somehow?

The only way I know for sure is to lay cable from my switch to the two different rooms. However, I'm sure I will have to use a repeater or amplifier because over 1500 feet, the signals of the audio/video will degenerate.

This is only half of my problem, there is still an issue with the audio feed off of their board going bad, so I will need to have a backup board with multiple mics. I may also have to broadcast this via the net, splitting the output connection into a third signal. These two things are minor, and can be overcome depending on their budget. However, I'm more concerned about a huge cable run right now!
 
What type of a venu is it? A venu of that size may well have their own internal TV system that you could use to tranmit.

Is the first room at 300 feet on the way to the 2nd room at 1500'? Or are they in seperate directions.

Wireless options won't work. (There are some that claim to, but it gets expensive before it gets reliable)

Kramer/Comprehensive and other companies make various options for sending video over CAT-5 (ethernet) cables .. but the cables must be patched directly to each other, they can't go through a router / the network.

If you are allready settign up teh equeipment for a webcast, another option is to set up equipment for a "in house" web-stream at a high enough bandwidth that the quality is acceptable when projected (I presume that's who this will be displayed?) - This does cause lag, but it doesn't matter unless there is 2-way interaction between venu areas.

Another option is to use a Camplex system down either CAT-5 or Coax to send the signal down the line.

At that sort of range, a composite signal will begin to fall apart unless you use really good cable, and a SDI signal could probabaly have trouble too. So then you'd need aplifiers in line or a "line-driver" at the start of the run. For audio, a line-level balanced signal will go that far just fine, thgouh if you can embed into SDI, you'd be set.

You'll need a DA (Distribution apmlifier) after your video and audio mixers anyway to split to recording, in-house distribution, and webcast. (Thoguh depeding on your gear and how you are recording and streaming, you might have enough outputs to get around it.


- Mikko
 
Thanks Mikko-

It's actually a church, and the other two rooms are a gymnasium on campus that will hold 1000 more people and a library which will hold 300 more. It's a big event that the church is planning and people are coming in from all over the country to see this.

Unfortunately, I'm sure the ethernet from the library to the gym goes through a router. I will check if it's just a patch panel, as that would be ok. The library is actually in the opposite direction of the gym, although the two are linked up. unfortunately, the church is not wired to any of the other rooms.

I will investigate the Kramer and Camplex systems, thanks for the info!!
 
How are the Library and the Gym linked up?

Would getting a signal to one, then get you a signal to the other?

- Mikko
 
Yeah, the library and gym have ethernet between the two and I'm not sure if they are hooked up via a patch panel or router yet so I have to investigate that. So I can do this two ways, get the signal to the library, which is 300 feet away, split the signal so it projects in that room and then over ethernet to the gym 1800 feet away.

Or I can just split the signal at the switcher I'll be using and then send off a signal to each destination. Hoping right now that option 1 will work.
 
Oops- and I'm not sure if they are linked via CAT 5 or fiber, so if it's fiber I'm probably screwed as well.....
 
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