Converting incoming Sat signal to IP then streaming...

[villait]

Ok so i have been working on this for a while and now have decided i need more brain power!

I am looking to 'catching' the signal directly from the LNB or switch in signal format, not video. Then converting this to a stream to stream over the net and then catch it and convert back!

Many people will come back and say ahh use the Slingbox, its great! yes i agree but this simply sends the video not the signal - so does not solve the concept.

In practice it will work like this - Dish set up in the Uk receiving - for arguments sake - Sky. Signal is 'caught' sent over the internet to a in IP format, this is then somehow converted back to the original signal via a gizmo and then a cable from the gizmo to a sky receiver.

The concept is aimed to deliver satellite signal to places where you cannot fit dishes but have a good internet connection, for example high rise flats.

i have simply used Sky as an example, it is the signal i am concerned about not the Tv content.

Hopefully this makes some sense and is not the ramblings of a mad IT installer!!!!

Any ideas!?

Cheers

 

[trigger]

Welcome to the Forum.
I can see advantages of what you are trying to do. Especially as the signal would still be encrypted where applicable as you stream it so I would have thought there would be no problems with uncle Rupert´s Lawyers.

Even if you get no joy on this forum keep us informed how you get on.

Good luck

 

[Robbo]

The bandwidth required for such a system would be immense, in the region of 1Ghz for just one H/L V/H combination. It can be done by a direct fibre optic link, but via the internet, I don't think so. Even to get a good picture on a Slingbox is difficult enough practically, let alone a whole IF.

 

[compufunk]

Welcome villait,
Nice idea, and the makings of an interesting thread. (putting my nerdy glasses on)

I'm sure it will become a possibility in the not so distant future (if it doesn't already exist).

One of the main problems would be with upstream data rates. A sling box or similar will only be uploading the required video and audio data.

My understanding is that if you want to upload a raw signal you are talking a lot of data. Any particular frequency an LNB is tuned to will be carrying enough data for multiple video/audio streams so, I would suspect that you would have an ammount of data that even the fastest internet connections (in this part of the world) would struggle to download quickly enough, let alone to think of uploading it.

I'm no sat signal expert, so if one of the more knowledgeable sat signal experts chimed in with some figures on data rates available on a sample transponder, that would be great.

The other thing would be that you would have to have exclusive access to and LNB, because it can only be tuned to one frequency at any given time.

If you were thinking of providing this as a service, you would need to have an LNB per frequency, per satellite along with servers and client side software to handle it all.

As trigger said. Let us know how you get on if you dont find a solution here.

PS: My comments are only to highlight the technical problems to see if anyone can think of a way around them, not to say its impossible.

C

EDIT:
:-slaphead
Robbo got in ahead of me with the main problem. I should not wander off to make a cup of tea while posting.

 

[BombedOne]

hm... why need to stream all bandwidth at same time? targeting multi-tv audience?

 

[HB13DISH]

You probably should look into the technology of IPTV or TV over IP and how this is done.
In your example you typed:

and then a cable from the gizmo to a sky receiver

Surely you would need another type of receiver, certainly not a satellite receiver.

 

[Chit Chat]

You probably should look into the technology of IPTV or TV over IP and how this is done.
In your example you typed:

and then a cable from the gizmo to a sky receiver

Surely you would need another type of receiver, certainly not a satellite receiver.

Maybe this USD 22,995 Niagara Pro II from Viewcast can do the job

You may visit their site to check it out: __http://www.viewcast.com/product_niagaraPro2.asp

 

[anishpsla]

It's a good idea. But only if we can afford this much bandwidth. It's leagal and can be saw any channel that's not available in our region. And can be use CS for encrypted channels.

 

[chaz6]

Sorry to dreg up an old thread, but I have some information that might be useful to other users.

Consider that for a full Ku-band feed you would need 4 coax cables (Hi/H, Hi/V, Lo/H, Lo/V). Given that each cable can carry about 1GHz max you would need to convert 4GHz of signal, which is just not practical. What you can do however is stream a multiplex that is received from each transponder on the satellite. In order to do this you will need a receiver (PCI or USB, DVB-S or DVB-S2) for each multiplex and some software. This will allow you to watch any channel that is contained within that multiplex. You can see the channel groupings as an example on Astra 28E at _http://www.lyngsat.com/28east.html.

There are two free applications I know of that fit the bill - getstream and mumudvb. These transport a multiplex to http unicast/udp multicast that can then be received over your network.

 

[malsat]

Very interesting chaz6,
how far have you got?

 

[LaKoTnIk]

hi!
i have been thinking about this too. It would be the best solution if we could somehow stream signal of our satellite provider over home IP network, so we could use somekind of setupbox, like xtreamer or something, to independently watch different channles on multi TV's, each having it's own setupbox. The main advantage of this is, that these cool setubox-es are enabling us to watch TV, surf the net, or viewing movies, that are stored on home network server, or even on a disk, if you have that kind of a setupbox, that uses one. and these setupboxes are very sexy to use...

I don't see any legal problems with this, since we're not distributing it to public, we're using it for ourselves.

 

[Terryl]

I too am jumping in a bit late for the pool party.

Very interesting idea, there are a few products out there that may fit into this application but they are far too expensive to be used for consumer applications.

Possible ways to do this.

There is a 10 gigabit (10 GbE) LAN system available, this uses CAT6 cabling, and there are RF to LAN receivers that can convert this high of a frequency to a 10 GB LAN output, (those are the expensive puppies) what is missing from this is the re-modulator end.

Theory of operation for Satellite end.

Satellite systems convert the 11 to 12 GHz signal from the satellite at the LNB to an IF ranging from 900 to 2.5 GHz, (“L” band, and depending on the satellite used) in this wide band signal are all the transponders from that satellite, there could be as many as 30, half at one polarity the other half 90 degrees out of phase with the other, the more transponders involved the wider the IF signal is.

At the receiver end (satellite downlink) you would have to down convert this “L” band signal to something that would be useable to a high frequency A to D (analog to digital converter) these A to D’s can only work up to 130 MHz, so with a 2 stage IF down conversion you could get the 900 to 2.5 GHz signal down to a 45 to 125 MHz IF this can be fed into the A to D and then converted to a 10GbE LAN output, 10 GbE switches can then feed the signal to the other end.

At the consumer end it would have to go the other way, 10GbE LAN in to an “L” band output, this “L” band would feed into the consumers satellite receiver, however this end would have to be in the ₤50 to ₤150 range or it would prove to be too costly for consumers to buy, it would be cheaper to get cable TV.

One other possibility would be a 10 GbE input to a RF, video or HDMI output then directly to the TV, no need for the 10 GbE to “L” band converter.

One problem with this is it would be dedicated to 1 satellite only, no way to switch to a different bird, the only way to do that would be to use fiber, it could carry several dozen satellites using this type of setup.

© 5/24/2011 by Terryl

 

[Purpose General]

I'd like to do something similar for Christmas as we will be away from the goggle box and I don't want to miss the good shows. How could I connect a satellite receiver and stream at least 1 tv channel over my router to Internet? Is this possible?

 

[Hixxy1]

I've come across these. Not sure if it's what you're after though.
_www.inverto.tv/products/product.php?section=2&id=242

 

[Analoguesat]

I'd like to do something similar for Christmas as we will be away from the goggle box and I don't want to miss the good shows. How could I connect a satellite receiver and stream at least 1 tv channel over my router to Internet? Is this possible?

A Slingbox will do that for you, although you need a decent upload speed.

SES are developing a new range of equipment called sat->IP which will allow signals to be streamed round your lan (and presumably elsewhere) with no extra gizmos required.

www.ses.com/satip

 

[Captain Jack]

If you wanted to send a whole TP via the Internet, you would need around 45mbit upload and download. It can easily be done locally using 2x Vu+ receivers with a PartnerBox plugin (or whatever replaced it) - but onto the Internet, it's probably less practical.