Webcast to multiple rooms in a building

russellhltn · Post by **russellhltn** » Sun Aug 26, 2012 1:58 am

BarkerAJ wrote:Use a couple of Composite splitters to give me 4 feeds (one for chapel, 3 for other rooms).

That's not going to work. You can't split a video feed. Not without messing up the quality. You'll need a distribution amp. Something like this.

BarkerAJ wrote:Hope the video got here quick, since I'd like to use the church speakers for the audio. Otherwise I'll need to send audio too, which jumps the units up to the $45/each range and I have to use tiny tv speakers or get multiple crabs to go into mic ports for room speakers.

Not sure as I understand the issue. There's no delay in the composite video system. (But there may be one in the TV.) I assume you'll be taking the audio off the laptop and feeding the main chapel. Hopefully that will feed the other rooms as well through the existing sound system. But you should be able to test that now and not wait for your order to arrive. Just have your laptop play some music, feed it into the chapel and see if you can get it everywhere.

You can probably test for TV delay by connecting a video feed to the TV composite and sending the audio direct to a speaker. See if it's in sync.

If you do need to distribute the audio, then you'll probably want a amp like the one I linked to that can do the audio as well.

Post by **Mikerowaved** » Sun Aug 26, 2012 3:53 pm

BarkerAJ wrote:5 - Connect cat5 to each of the balun and run them to the 3 clerk offices off of the chapel, since they are already wired into the building network.
6 - At the central hub for all the networking, use a short network cable to go from the clerk office to the desired room. I know the AV signal can't go through a network hub/switch, but I'm hoping they can make the jump at a dumb port. Else this whole crazy idea is dead in the water and I just have to run mega long cables down the hallway or outside and through the windows.

As you mentioned, you REALLY have to know your network topology to pull this off. For example, I happen to know one of our buildings has a network switch in the overhead that connects to several clerk's offices.

michaelfish · Post by **michaelfish** » Sun Aug 26, 2012 3:54 pm

I strongly recommend NOT using RCA splitters for additional video feeds. The proper way to get more video feeds is by using a video distribution amplifier.

Another way to feed audio to additinal locations in the building can be accomplished by using the hearing impared receivers and connect them to an amp
and speakers.

russellhltn · Post by **russellhltn** » Sun Aug 26, 2012 8:01 pm

michaelfish wrote:Another way to feed audio to additinal locations in the building can be accomplished by using the hearing impared receivers and connect them to an amp
and speakers.

As long as you are sure it's reliable. I've been plagued by a flaky transmitter in the past.

barkeraj · Post by **barkeraj** » Mon Aug 27, 2012 11:19 am

Thanks for the tips on the distribution amplifier. Not knowing the proper terminology makes it difficult to search for proper tools. Will add that to the list

barkeraj · Post by **barkeraj** » Sun Sep 09, 2012 9:50 pm

We did a full test of my crazy configuration tonight. It all worked great. Got the needed AV to the RS, YW and Primary rooms.

Here is a "schematic" of how everything is setup. I made this to make sure I thought through everything I needed, ordered the right stuff, and received it as well.

Hopefully it is of help to anyone else that needs to do something along these lines. I can come up with the specific items I ordered on Amazon if someone specifically wants it.

Here is the google drawing I made this on. https://docs.google.com/drawings/d/1US6 ... a2OhQ/edit

Video to non-AV rooms.jpg

michaelfish · Post by **michaelfish** » Tue Sep 11, 2012 11:52 am

Great diagram and very logical to me. Since you are using CAT5 for distribution, you will be able to use the cables for other types of distribution.

One thing to check for...when I connect the VGA signal from the laptop to the scan converter, and from the scan converter to the projector, I loose quality on the projected image.

I found the solution to this was to connect the projector directly up to the laptop (VGA) and use the VGA output port on the projector to feed the signal to the scan converter.

barkeraj · Post by **barkeraj** » Wed Sep 12, 2012 12:41 pm

michaelfish wrote: I found the solution to this was to connect the projector directly up to the laptop (VGA) and use the VGA output port on the projector to feed the signal to the scan converter.

Good tip. I'll have to give that a try. Thanks!

nathangg · Post by **nathangg** » Wed Sep 12, 2012 9:10 pm

BarkerAJ wrote: Hopefully it is of help to anyone else that needs to do something along these lines. I can come up with the specific items I ordered on Amazon if someone specifically wants it.

Here is the google drawing I made this on. https://docs.google.com/drawings/d/1US6 ... a2OhQ/edit

I'm in this EXACT situation for an important broadcast this month. Can you send me the list of things you bought on Amazon? Also, what is a "CRAB" and where can I buy one?

Thanks~!

aebrown · Post by **aebrown** » Wed Sep 12, 2012 9:46 pm

nathangg wrote:Also, what is a "CRAB" and where can I buy one?

"Crab" is the common term for the EJ-10 or EJ-8 Multi-Input Adapter. As far as I know, each building should have one. They are supplied by the FM Group.