New Build TV Distribution Spec

Johnboy1951

Laney Eager Yo-yo wrote: »

It not using IP. It's a different technology.



from

https://installers.hdbaset.org/faqs-our-frequently-asked-questions-for-the-whats-wheres-and-whys-of-hdbaset-installations-coming-soon/

Also Cat6 will do traditional IP at 10Gb/s up to 55m

Yes I know it is not using IP, but regardless of that it still has to send the data, which for a HDMI 1080p stream is approx 6.5 Gb/s.

Cat6a is rated at 10Gb/s ....... but Cat6? Here is one source for that information



In any case with intelligent encoders/decoders the Matrix devices maybe could dynamically adjust the encoding/compression to suit the ethernet capabilities ..... and no I have no idea if they do that

Johnboy1951

Cyrus wrote: »

im not sure if i am answering a different thing or if HDBASET is different than HDMI over ethernet? but i can send 4k material via the matrix without issue.

I expect the HDMI source is re-encoded/compressed to suit the Cat6 cable by the Matrix. It has a matching decoder at the client display as I understand it.

Yes, in the case of HDMI over ethernet, the uncompressed signal would be sent, thus requiring the full bandwidth of the HDMI ..... 6.5 Gb/s for 1080p approx.

Cyrus

Johnboy1951 wrote: »

HDMI over ethernet is quite heavy, data-wise, I believe. (~6.5Gb/s for 1080p IIRC)
So using a matrix, Cat7 would be required directly from source to destination, for each 'tuner/device' to each 'display'.

Compared to a Sat>IP type set up,

the costs are reduced hugely, as no matrix is required
there is no requirement for Cat7, nor for direct cabling through matrix
Cat5e can handle multiple streams
an existing LAN can be used.

For most home use Sat>IP is much the better option it seems to me.

are either of these the all in one box that you were saying it would be good if someone came up with or not?

https://www.amazon.co.uk/Megasat-0600207-Sat-IP-Server/dp/B01DKP28O2

https://www.grooves.land/dream-multimedia-dream-multimedia-dm520-sat-server-dvb-dvb-tuner-dreambox-adapter-cable-pZZa1-2097896527.html?language=en&currency=EUR&utm_source=froogle_ie&utm_campaign=froogle_ie&gclid=Cj0KCQiAk7TuBRDQARIsAMRrfUZB4ouzZJNzis0lKDqNnj06J0VUG5Ik9hwai-fEer0McQkmB0w12R4aAlZzEALw_wcB

Johnboy1951

Cyrus wrote: »

are either of these the all in one box that you were saying it would be good if someone came up with or not?

https://www.amazon.co.uk/Megasat-0600207-Sat-IP-Server/dp/B01DKP28O2

https://www.grooves.land/dream-multimedia-dream-multimedia-dm520-sat-server-dvb-dvb-tuner-dreambox-adapter-cable-pZZa1-2097896527.html?language=en&currency=EUR&utm_source=froogle_ie&utm_campaign=froogle_ie&gclid=Cj0KCQiAk7TuBRDQARIsAMRrfUZB4ouzZJNzis0lKDqNnj06J0VUG5Ik9hwai-fEer0McQkmB0w12R4aAlZzEALw_wcB

The Megasat device is a Sat>IP quad tuner box, which would do a similar job to the Digibit I use, for reception of Satellite TV signals.

The DM520 seems to be a fairly standard single tuner DVBT/C box to attach to a TV with the addition of SAT>IP capability for its tuner.
I have also seen it advertised with a single DVB-S tuner for satellite.

So, in answer to your question about what my wish would be .... no.

What I would like to be able to buy is one server device, with both quad DVB-S and quad DVB-T tuners on board, and either have SAT>IP network output for those tuners, or else have on board the capability of running tvheadend or equivalent, so that all that would be required is a small client device running suitable software to use any of those tuners. It would require just two coax cables ...... one from Unicable LNB and the other from an aerial.

Essentially put three devices from my pic above into one case ...... HDHomerun, Digibit and Backend server.

I do not expect to see it TBH.

tsue921i8wljb3

Johnboy1951 wrote: »

I expect the HDMI source is re-encoded/compressed to suit the Cat6 cable by the Matrix. It has a matching decoder at the client display as I understand it.

Yes, in the case of HDMI over ethernet, the uncompressed signal would be sent, thus requiring the full bandwidth of the HDMI ..... 6.5 Gb/s for 1080p approx.

It's not using encoding to reach 10Gb/s. It uses encoding to enable the HDMI 2.0 bandwidth of 18Gb/s.

https://community.cedia.net/blogs/david-meyer/2018/05/31/4k60-hdr-through-hdbaset

Johnboy1951

Thanks for that ref link.

So in its standard format it uses the full 10 Gb/s capability of Cat6, and compresses UHD and others that require greater bandwidth.

Honestly, it all seems to be a bit uncertain, as different manufacturers can use whatever they wish as they do not need to interface with any other manufacturers devices.

tsue921i8wljb3

Johnboy1951 wrote: »

Thanks for that ref link.

So in its standard format it uses the full 10 Gb/s capability of Cat6, and compresses UHD and others that require greater bandwidth.

Honestly, it all seems to be a bit uncertain, as different manufacturers can use whatever they wish as they do not need to interface with any other manufacturers devices.

As I said I looked into it myself but in my own opinion it isn't really suitable for a multi-user household as you can only watch one output from each source. I can see it's place in large commercial venues where you need the same output on multiple dispersed screens. It's also eye-wateringly expensive for larger units.

Johnboy1951

Laney Eager Yo-yo wrote: »

As I said I looked into it myself but in my own opinion it isn't really suitable for a multi-user household as you can only watch one output from each source. I can see it's place in large commercial venues where you need the same output on multiple dispersed screens. It's also eye-wateringly expensive for larger units.

Yeah I got that impression .... but was interesting to read about it so thanks again for the references above.

One thing it did for me ..... made me extremely happy that I went Sat>IP here

Cyrus

Johnboy1951 wrote: »

Yeah I got that impression .... but was interesting to read about it so thanks again for the references above.

One thing it did for me ..... made me extremely happy that I went Sat>IP here

sorry to ressurect this and bring it off point a little

have just realised that i can watch my zgemma box on an ios device over IP using the openwebif plugin.

Obviously its not the same as what you are doing, but is it some variant of it?

Johnboy1951

Cyrus wrote: »

sorry to ressurect this and bring it off point a little

have just realised that i can watch my zgemma box on an ios device over IP using the openwebif plugin.

Obviously its not the same as what you are doing, but is it some variant of it?

Most (?) of the Linux boxes will allow you to access their functions/channels/media over the LAN.
You should be able to use DLNA to watch TV channels for instance.

In so far as the box makes its media available to other client devices yes it sounds similar, and should be available to all devices attached to the same LAN.