HD Video Signal extension

[dottore]

using the shoutbox I asked suggestions regarding equipment to ensure an optimal video signal extension (in my case to bring HQ video from my graphic card on stage to the projector in the backstage).
I collect here the replies from users in case someone else is interested.
Any other suggestion or feedback is welcome.

keftaparty:
You can check blackmagic’s HDMI>SDI converters. If you’re lucky your projector has SDI input

manuel:
it has to be 6G-SDI to handle 4k

robotanton:
a friend of mine (mfx) suggested a pair of Kramer TP-580 transmitters and a HDBaseT cable. 4K at 100m.

catweasel:
Hd SDI, you can get HDMI-> SDi convertors easily, and BNC will run 100’s of meters

Cheers

[sunep]

also this: https://www.corning.com/optical-cables-by-corning/worldwide/en/products/thunderbolt-optical-cables.html

EDIT: haven’t tried it, added it for completeness

[sebl]

i always used dvi fiber optics extenders from different brands and never had serious problems. they can also be easily rented for testing purpose.

[antokhio]

I’m with sebl on that one

[circuitb]

regarding black levels be aware of cheap hdmi <-> sdi converter (blackmagic)

[dottore]

@circuitb: do you recommend a good quality product or brand?

[circuitb]

from my experience the previous (2012-2016) BM mini and battery converters shift the black levels
the teranex was ok and support 12G sdi up to 2160p60

just checked their website they’ve updated the mini&battery series to support the 6G sdi
not sure if they solve the black levels issue
https://www.blackmagicdesign.com/products/miniconverters