| General > General Technical Chat |
| Running HDMI signal over ethernet twisted pair |
| (1/1) |
| Axk:
There are these cheap RJ45 -> HDMI, HDMI -> RJ45 adapters on Aliexpress like this one - https://www.aliexpress.com/item/1005001577157733.html Looks like they are just connecting the HDMI pairs to the twisted pairs without any smarts in them (I guess just impedance matching) - there's a teardown photo in one of the comments in the feedback. Is there a standard for this type of thing or is it just kind of works but is not standardized? I cannot find a standard for this, there's ethernet over HDMI, more complex adapters which actually convert it to ethernet packets, but nothing for these dumb passive connectors. |
| thm_w:
Attached the photos you are talking about. I don't think there would ever be a standard for something like this, as its not HDMI compliant. |
| NiHaoMike:
A proper HDMI over CAT6 adapter has chips to boost the signal. |
| Algoma:
Such passive adapters could operate over short distances at best, Even HDMI seems to need active cables for any remarkable length (30ft+) Any signal integrity problems would cause HDMI to renegotiate its data rate, causing intermittent video issues. Longest (active) HDMI cable I've used was was 50ft active cable to a rear classroom camera as AUX input for a Conference system. |
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