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Broadcast Wirelessly to Multiple Televisions


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Old 29-08-2013, 14:28
Lord_Liverpool
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Hello DigitalSpy

I have a video on my computer that I want to broadcast simultaneously to multiple televisions.
[LIST=1][*]Can it be done?
[*]Can it be done wirelessly?
[*]Can it be done cheaply?[/LIST]Thanks.
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Old 29-08-2013, 14:38
Nigel Goodwin
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Depends what you mean by 'broadcast'?.

With in a home you could do it with a wireless sender, and multiple receivers - not 'cheap' though.

I'm presuming your computer signal is a UK TV signal?, and not a computer one?.
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Old 29-08-2013, 14:54
Deacon1972
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My son was looking into something similar, they were looking at Intel WiDi software and an adapter.

Adapter connects to the HDMI port on a tv/tv's, the PC/laptop requires Intel software.

The software is here..... https://downloadcenter.intel.com/Det...?DwnldID=19782

A compatible adapter here..... http://www.amazon.co.uk/Belkin-Scree.../dp/B005626UPG

May/may not be suitable but worth looking into - more info here....

http://www.intel.co.uk/content/www/x...s-display.html

http://en.m.wikipedia.org/wiki/WiDi
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Old 29-08-2013, 14:58
Lord_Liverpool
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Hi Nigel

Thanks for replying.

It would be showing a video that I captured on a camcorder. So I presume it would be an AVI or a MP4???

My computer has a HDMI out. So I could buy HDMI cables and a HDMI 1-to-4 splitter. But that would mean trailing cables through the building. Drilling holes in walls and ceilings. Plus I believe HDMI cables have a maximum length of 10m??? Which is why I considered going wireless.

Thanks
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Old 29-08-2013, 15:11
Chris Frost
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Doesn't WiDi require a certain level of Intel processor with specific support for the feature, or was that some other bit of Intel technology for multiple displays?

How cheap is "cheap"? And how many TVs. And what distance. And through what materials? Are we looking at a couple of hundred quid or a couple of grand?


"Broadcast" is a word that has specific connotations. To me it suggests that the same image goes to each TV simultaneously. If that's the case then surely the cheapest way is to convert the file to video on a DVD, then play out from a DVD player attached to either a wireless transmitter, or to go cabled by using a video distribution amp.

Any sort of signal distribution direct from the PC will involve either very bandwidth-hungry VGA (not really an option) or IP over a wireless network. That won't be cheap though.

If you can relinquish control and allow the TV viewer to control when the file is seen then some wireless streaming players would do. WDTV Live for example. Of course that does rely on the viewers then selecting the correct source file and pressing play. That might be a tall order.
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Old 29-08-2013, 15:24
Lord_Liverpool
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Hi Chris

Thanks for replying

I looked at Deacon1972's suggestion and I agree with you that his solution requires the purchase of a computer that is WiDi enabled. (It's something to consider)

When I say broadcast I simply mean I click play on my computer and the video gets transmitted to 4 or more Televisions at the same time. So everyone in the building sees the same video at the same time.

No I don't want people to pick and choose what they watch, I want them all to see the same thing. They wouldn't have access to the remote controls and the televisions would be wall mounted. (implying do not touch)

All the TVs are in the same building. Its an old building with breezeblock, brick and stone walls. The televisions are scattered throughout the building.

The cheaper the solution the better (of course) but I want the images to be crisp i.e.720p (am I asking too much?)

So you can get a handle on what I mean. Imagine the venue was a theatre and I wanted to broadcast live what was on stage to televisions upstairs in the bar and downstairs in the lobby.

Thanks very much.
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Old 29-08-2013, 15:27
Deacon1972
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Doesn't WiDi require a certain level of Intel processor with specific support for the feature, or was that some other bit of Intel technology for multiple displays?

How cheap is "cheap"? And how many TVs. And what distance. And through what materials? Are we looking at a couple of hundred quid or a couple of grand?


"Broadcast" is a word that has specific connotations. To me it suggests that the same image goes to each TV simultaneously. If that's the case then surely the cheapest way is to convert the file to video on a DVD, then play out from a DVD player attached to either a wireless transmitter, or to go cabled by using a video distribution amp.

Any sort of signal distribution direct from the PC will involve either very bandwidth-hungry VGA (not really an option) or IP over a wireless network. That won't be cheap though.

If you can relinquish control and allow the TV viewer to control when the file is seen then some wireless streaming players would do. WDTV Live for example. Of course that does rely on the viewers then selecting the correct source file and pressing play. That might be a tall order.
Device needs i3/i5/i7 processor, (compatible generation).
Intel HD graphics card (Iris Pro/Iris/HD).
Compatible network card.

My son just needs to upgrade their graphics card.

May/may not be suitable for the op depending on their pc.
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Old 29-08-2013, 15:41
chrisjr
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Hi Chris

Thanks for replying

I looked at Deacon1972's suggestion and I agree with you that his solution requires the purchase of a computer that is WiDi enabled. (It's something to consider)

When I say broadcast I simply mean I click play on my computer and the video gets transmitted to 4 or more Televisions at the same time. So everyone in the building sees the same video at the same time.

No I don't want people to pick and choose what they watch, I want them all to see the same thing. They wouldn't have access to the remote controls and the televisions would be wall mounted. (implying do not touch)

All the TVs are in the same building. Its an old building with breezeblock, brick and stone walls. The televisions are scattered throughout the building.

The cheaper the solution the better (of course) but I want the images to be crisp i.e.720p (am I asking too much?)

So you can get a handle on what I mean. Imagine the venue was a theatre and I wanted to broadcast live what was on stage to televisions upstairs in the bar and downstairs in the lobby.

Thanks very much.
Does this building have CAT5 (or similar) cabling for a computer network in place? If so that might be a potential solution to the distribution problem.

I have used a unit that distributes VGA over CAT5, it has a single transmit unit that plugs into the computer and four CAT 5 ports on the back that you plug into the network cabling. And receive units that plug into the other end of the cable and convert it back to VGA to feed the monitor/TV.

I have also seen units that claim to do the same with HDMI such as this

http://cpc.farnell.com/pro-signal/ps...rxs/dp/AV21357

Not used one so wouldn't like to comment about how it performs. But if there is network cabling installed then that might be an option.
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Old 29-08-2013, 18:38
Chris Frost
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Deacon1972, thanks for confirming what I thought on the WiDi stuff.


Okay, everyone else. Before we get too far in to this let's just clarify what's going on with the TVs. These are existing TVs. Are they hooked in to some sort of central display network? If so, then isn't that the route to distribute the video feed? However, if they're autonomous then potentially there's a bigger problem: How to switch to an alternate source. You can do that with RS232 easy enough... if the TVs have RS232. So, what TVs or monitors are we dealing with (exact make and model number or a link to the manual on the manufacturer's support page would be useful). Also, if they are connected to some sort of in-building messaging system then what is it and can it be used to distribute your video?
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Old 29-08-2013, 21:18
mrprosser
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I haven't tried yet? But hope to be getting another smart TV soon to try.

The LG smart TV I currently have will access the contents of my Mac using the Plex media server app. I haven't been able to try and connect more than one device wirelessly yet though. I'll update as soon as I know (unless someone answers first)
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Old 29-08-2013, 22:15
evil c
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Old 30-08-2013, 16:47
jjne
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Linux PC, VLC in multicast mode, multiple cheap 20 Android 'mini-PC' dongles.
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