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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Gefen HDMI Wireless Solution for 999$

Gefen HDMI Wireless Solution for 999$

  • YES

    Votes: 5 83.3%

  • NO

    Votes: 1 16.7%
  • Total voters
    6
Vigen Vartanov

Vigen Vartanov

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Good day . At this moment i was checking Gefen web page for some extenders , and found new Wireless for HDMI (UWB Technology)
http://www.gefen.com/kvm/dproduct.jsp?prod_id=4318

Dimensions: 6" W x 2" H x 4" D , is not small , but you can mount it on tripod or even on camera . Power is 5V , i thing that it will not be problem to power it from Brick .

Sow question is will it work with RED :) If it will work , it looks like it best solution for low cost HD play back , because you can use any DVI monitor on set .
If it will not work , please answer me why ? i am very interest in this product.

Specifications:
Up to 30 feet line-of-sight wireless operation with 65 Mbps throughput
Frequency band range: 3.1 - 4.8 GHz
Resolutions: 480i, 480p, 720p, 1080i and 1080p@24Hz, 25Hz, and 30Hz
HDMI 1.3 Compatible, HDMI 1.2 Compliant
Consumer Electronics Control (CEC) compliant
ADI JPEG 2000 visual lossless compression
Operating temperature: 0 to 40 degrees C
Operating humidity: 10% to 90% relative humidity, non-condensing
Power Supply / Consumption: 5V DC / 12.5W max.
FCC Compliant Part 15
Dimensions: 6" W x 2" H x 4" D
Shipping Weight: 6 lbs.

Features:
Real-time, visually lossless HD video compression
Two HDMI inputs and one Component Video / Analog Audio input
Support for Dolby 5.1 Surround Sound
Fully HDMI and HDCP compliant
Supports HDMI 1.3 Lip Sync features for source devices
2-ch Audio and PCM @ 32KHz, 44.1KHz, 48KHz supported as well as multichannel compressed 5.1 audio
IR Blaster and IR Receiver jacks
Input Selector Switch
 
It's true that 30' isn't terrifically far, but that's way more than enough if you were attempting to use it as a "video village" in the same space. I actually contacted Gefen about a year ago and it wasn't available in time for principle photography for our first film, but now that you've reminded me of it, I just might give it a try. I'm especially interested in it for doing remote focus pulls. Apparently, latency isn't much of an issue.

Stephen
 
I've been looking at this unit for a while, not for use with RED, but for another purpose. If I get a chance I'll see if I can test it with the output from RED as it could make a nice wireless option.

For remote video village, connecting the output onto the receiver to a UTP or fiber optic balun system would make it ideal for sending longer distances. Just have to keep the receiver within about 30ft of the camera.

My only concerns with this unit is that most wireless HDMI solutions out there have serious compression schemes and all I have tested thus far for AV install purposes have been a disappointment. I have not seen any real reports on this Gefen unit thus far, so I'm still curious. But the "real-time visually lossless compression" has kept me from making a serious effort to try it.
 
They claim:
"Real-time, visually lossless HD video compression"

however they also state...
"Up to 30 feet line-of-sight wireless operation with 65 Mbps throughput"

That is a fairly large reduction in a 1080p signal even for an 8-bit one (I doubt it supports 10-bit).
8bit@1920x1080@24fps=760Mbps.

760Mbps down to 65Mbps(Max)... visually lossless?!?... at an almost 88.5% data rate reduction that term may best be described as subjective. I believe I have the math right, let me know if I don't.
 
The question isn't whether it is truly visually lossless. . . the question is if it is simply "good enough."

My AppleTV system isn't visually lossless, but I am very pleased with its simplicity and ease of use, and it's a 10 to 1 compression, as well. If this thing is almost as good as AppleTV, I'd consider it a homerun. I mean, come on, for less than $800? I'm really intrigued, and am only sorry I had forgotten about it.

There is a comparable Sony unit, but it was rated poorer in stability than the Gefen unit by CNet (for what that's worth).

Stephen
 
Chris. said:
They claim:
"Real-time, visually lossless HD video compression"

however they also state...
"Up to 30 feet line-of-sight wireless operation with 65 Mbps throughput"

That is a fairly large reduction in a 1080p signal even for an 8-bit one (I doubt it supports 10-bit).
8bit@1920x1080@24fps=760Mbps.

760Mbps down to 65Mbps(Max)... visually lossless?!?... at an almost 88.5% data rate reduction that term may best be described as subjective. I believe I have the math right, let me know if I don't.
Click to expand...

Yes but for 999 you even can not buy AJA to downconvert. Then send wireless PAL signal to Play back . I thing that HDMI signal must be better ? VS AJA Downconverting.
 
Another option for distance HDMI transmission might be, although not wireless, an HDMI to optical converter box. You can send an HDMI signal on some of those to about 100 Meters on two optic cables. Though the optic cabling is expensive the boxes only cost a couple hundred. Also the HDMI to Cat-5 boxes is another option if you don't have to go quite so far and both the boxes ($100) and cable are cheap!
 
W-I-R-E-L-E-S-S. . .

That's what we crave. . .

:-)

Think pulling focus on a stabilizer of some sort. Granted, you can't go to far (30 feet), but a lot of steady runs aren't terribly far away (although some clearly are).

In a worst-case scenario, if this thing works at all, that is (and I'm just thinking out-loud here), it might make sense to put the receiver in the middle of a steady run, then run a longer cable off the receiver to the monitor being watched by the focus-puller. Convoluted, yes. Workable? I think it just might.

I sure as heck don't want to spend $5000 for a fancy wireless system if I don't have to.

Stephen
 
Chris. said:
Another option for distance HDMI transmission might be, although not wireless, an HDMI to optical converter box. You can send an HDMI signal on some of those to about 100 Meters on two optic cables. Though the optic cabling is expensive the boxes only cost a couple hundred. Also the HDMI to Cat-5 boxes is another option if you don't have to go quite so far and both the boxes ($100) and cable are cheap!
Click to expand...

Can you share link for any HDMI Cat-5 Extenders for 100 USD :) I am looking for one , on gefen web page i did not found any solution under 600 USD.
 
Ah, Vigen, that new one is even better! 100' (which means 50', but who's counting?)! Same price.

And the best part? I think the box is even smaller!

When is it due????

Stephen
 
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