HDMI over Network Cable through an EoP adaptor?

Discussion in 'Audio Visual' started by Stooge007, Apr 24, 2017.

  1. Stooge007

    Stooge007 Member

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    hi all

    would an HDMI over network cable adaptor work where the network points are joined by EoP adaptors?

    or will they only work with a straight network connection?

    cheers :)
     
  2. chip

    chip Member

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    HDMI over network cable adapters just use the network cable to carry an HDMI signal, not an ethernet signal, so it's probably a no. (You can't run them through an ethernet switch, for example.)

    You also need decent quality cables to give you the bandwidth that HDMI needs.

    There are expensive HDMI to IP units that could conceivably do it, but EoP doesn't really have enough bandwidth.
     
  3. Zee

    Zee Member

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    Depends - there are HDMI over Ethernet adaptors that do use your ethernet network, and can be run through a switch. Works well for distributed video/matrix switches etc - but usually set up as its own network, also, tends to be at the high end of the market.

    Z...
     
  4. gibbz

    gibbz Member

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    check out HDBaseT
     
  5. Pugs

    Pugs Member

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    it isn't IP traffic so no
     
  6. Renza

    Renza Member

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    It doesn't have to be IP, other protocols can work over an ethernet connection. As long as the device uses ethernet frames, and there is enough bandwidth between the two endpoints, then there's no reason it shouldn't work.

    And you can get HDMI over IP converters, but the bandwidth of EoP is likely to be the limiting factor.
     
  7. OP
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    Stooge007

    Stooge007 Member

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    thanks guys, will keep researching

    wasn't looking to spend the earth, might try an HDMI signal transmitter first and see how it goes

    cheers :)
     
  8. tree86ers

    tree86ers Member

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    i have seen HDMI to Ethernet work with a hub to do digital signage on a floor. i dont see why the conversion to EOP would change much. you would have to worry about the bandwith of the EOP but if it is the same as the ethernet cable used it could be fine.

    If you have the equipment there whats to loose by trying.
     
  9. OP
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    Stooge007

    Stooge007 Member

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    i don't have the HDMI -> ethernet adaptors
     
  10. tree86ers

    tree86ers Member

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    ah

    ebay have some listed, looks like a pair under $20 AUD.
     
  11. Renza

    Renza Member

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    doubt they are HDMI to ethernet for $20
     
  12. cvidler

    cvidler Member

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    bingo.


    There's lot of incorrectly named gear out there.

    Most of them (especially the cheap ones), just use the cable as a high bandwidth cable.

    There's no ethernet or IP happening, these devices won't be compatiable with anything else between them (switch, EoP, etc.), they just expect some quality copper between them.

    The more expensive units, then start doing actual conversions of the HDMI data into something more like real network traffic, either ethernet frames (as covered above), which a hub/switch can probably handle, or full on IP traffic.

    Even the most basic level of HDMI (1.0) runs at 5Gbps, so you're going to need a high speed network, or the devices do some fancy transcoding to get the HDMI across lesser cabling.

    HDMI 2.1 touts 48Gbps.
     
  13. tree86ers

    tree86ers Member

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    yeah but to test a proof of concept it would be ok

    2 X 1080P 3D HDMI Extender to RJ45 Over Cat 5e/6 Network LAN Ethernet Adapter

    i highly doubt that these would be fantastic quality


    this being said, this would have to be the only thing on that network for the EOP.. otherwise as above you would need the gear the converts the signal.
     
  14. cvidler

    cvidler Member

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    those are the dumb, just using the copper type adapters.

    same as if you wired up a switch on one end and a light on the other to send morse code, doesn't make it Ethernet just cause you're using RJ plugs on it.
     
  15. Renza

    Renza Member

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    Completely wrong. EoP ain't gonna help you unless the device uses ethernet. Just because it uses ethernet cabling does NOT mean that it uses ethernet. If you buy this expecting it to work, you're going to be disappointed.
     
  16. flain

    flain Member

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    As some mentioned most are not IP, there are however some HDMI over IP products out there but they are pricey if you want good ones, and it should be noted most of them (bar 1 or 2 super expensive ones) do not have very low latency so playing game consoles/PC games is out of the question due to lag.

    In order to support HDMI 2.0+ these devices need to transcode on the fly and decode at the other end as raw HDMI requires too much bandwidth.

    See here
    http://www.lindy.com.au/hdmi-over-gigabit-ethernet-extender-transmitter/
    http://www.lindy.com.au/hdmi-over-gigabit-ethernet-extender-receiver

    $400 for the transmitter and $450 for the receivers, not exactly cheap!

    These are also the real deal:
    http://justaddpower.com/
    http://www.gefen.com/kvm/ext-hd2irs-lan2.jsp?prod_id=15132

    Hopefully with hardware HEVC encode/decode coming we can see things like this come down in price in the next few years. These are basically displacing the HDMI matrix switch market which usually those devices are $2k-$12k.

    Another thing to note is many of these require or strongly recommend you have a switch that supports vlans so you can put these in a separate vlan. This is because some of them work using broadcast traffic and basically flood the LAN. There is research to do if you want to get a good quality one.
     
  17. MR CHILLED

    MR CHILLED D'oh!

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    At that price certainly not worth it for the application I need it for.
     
  18. NerfDude

    NerfDude Member

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    Does it need to be low latency ? I bought a device from Alibaba that encodes a hdmi signal to a 1-10mbps h264 stream which I feed back into my network and can watch it on any computer or raspberry pi etc. was a couple of hundred dollars. There's a couple of seconds lag though.

    Edit: like this https://m.aliexpress.com/s/item/32242100864.html
     
    Last edited: Apr 28, 2017
  19. OP
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    Stooge007

    Stooge007 Member

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    just looking to stream tv etc. from my study PC to my loungeroom TV (~ 10m away) but haven't got Cat 6 in the walls, currently using EoP adaptors
     
  20. flain

    flain Member

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    Streaming from a TV card or saved TV shows? If you only need video just get a raspberry pi 3, put kodi on it and share the network drive :)
     

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