![Hollyland Cosmo C1 [Official] 1000ft Wireless HDMI/SDI Video Transmission System 40ms 1080P 12-20Mbps 5G Image&Audio Transmitter Receiver, Embedded UVC Live Stream Seamless Channel Switch SDI-Loopout](https://m.media-amazon.com/images/I/61JAC1WUv4L.jpg)

🚀 Elevate your live production game with Hollyland Cosmo C1 — wireless freedom, flawless streaming.
The Hollyland Cosmo C1 is a professional-grade wireless HDMI/SDI video transmission system delivering up to 1000ft range with ultra-low 40ms latency. Featuring 1080P60 HD streaming via 5GHz frequency and adaptive frequency hopping technology, it ensures stable, interference-free video feeds. With embedded UVC support, it enables seamless live streaming through a single USB-C connection. Designed for versatility, it offers multiple power options and flexible mounting, making it ideal for live sports, news, and electronic field production.



















| ASIN | B09K75Q533 |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #25 in Video Transmission Surveillance Systems |
| Customer Reviews | 4.6 4.6 out of 5 stars (175) |
| Date First Available | October 25, 2021 |
| Item Weight | 4.26 pounds |
| Item model number | COSMO C1 |
| Language | English |
| Manufacturer | Hollyland |
| Product Dimensions | 11.42 x 5.39 x 10.43 inches |
B**N
You need to learn how to use it
Great product
I**S
Great for live truck cameras, news, etc.
Very impressive! We are using this system for live sports from an outfield camera. No more long cable runs!!! No glitches, solid signal!
A**R
This is a great piece of kit
Despite the video latency if that is a factor for you then probably look at another brand but if it isn’t this is a very excellent piece of kit. I do production sound so latency was not at all an issue for me. It’s like the Shure Axient of Wireless video transmission, changing frequencies when disrupted.
P**R
Works very well
Works well, we haven’t seen many problems in the way of RF interference. It’s very automatic, just turn it on and use it.
J**E
Impressed but with an asterisk
I’ll start off by saying I haven’t used these extensively, really 2 days of on-set testing. I work on big budget movies and tv shows and we only use SDI cables, so I cannot comment on any HDMI capability. That said, on a professional set nowadays you have an incredible amount of signals being bounced around and that was a huge worry of mine about the C1. My feed being wireless in this way is one of the last things that needs to be wireless (behind sound’s various antennae, wireless focus pullers, wireless iris controls, wireless feeds for AC’s & DP, wireless streaming iPad monitoring like QTake) but it would be so much more helpful if I could be. I plugged these in and expected various other depts to start complaining about things malfunctioning. But nothing happened. Everything worked! I didn’t truly get to test distance. I was never too far from the transmitter but I was far enough and through some walls where I expected less. Keep in mind I’m used to using Teradek systems that are much, much more expensive than this and I’m used to those being quirky. The video quality was good, the lag was not noticeable (this is the reason I don’t use a QTake or other streaming monitor system, I can’t have the lag). I’m not a focus puller so I can’t speak to if it’d work for them as advertised but I did put my laptop right next to a focus monitor and to my eye couldn’t see a difference. The image was a little dark, there’s many reasons for this so I’m not going to blame the device for that. I bought a few 970 batteries and I was able to run the receiver off of one for almost a full 13 hour shooting day, turning it off for lunch and when there’d be some downtime between setups. So far so good. It comes in a hard shell case that has all the foam cut to size, with 2 different types of antennas (with more types available), a DC adapter, a USB A to USB C adapter and a mini magic arm. Which is a nice array of stuff. I do think it would make more sense to have 2 DC adapters however. And you might be close to throwing that USB adapter away since you’re just gonna plug it straight into a USB C port anyway right? Here’s the rub. This thing is super picky about what cables it’ll let power it and provide video (one of the biggest advertised features is how you can just plug it into your computer). I haven’t heard of anyone being able to use a pure USB C to USB C cable of any kind (though you’ll see that in their ads). I’ve tried A LOT and not even the one that powers my Blackmagic Ultrastudio Recorder 3G and takes a video feed from it works. According to the actual company, you need a USB A on one end (this the adapter) to supply enough power. Also you won’t see the device in any device list unless it is receiving an image. The other thing is the support is less than stellar, mostly directing you to a Facebook page that mostly has people asking unanswered questions.
L**T
5 Finger Death Punch + Brantley Gilbert camera options.
We are on tour and opening for the headliner. Our front of house camera needs to be struck and on the truck before 5 finger death punch needs the dock. We couldn't wait to strike a camera cable from under the feet of the audience. This option has been flawless. We added a second unit to our photographers camera. It has added wonderful options for our imag.
L**I
Me encanta lo estable y facil de usar que son estos Productos de Hollyland. ●Con el Mars 400S Pro envio señal de video y audio al proyector de la Iglesia. ●Con los Cosmo C1 recibo 2 señales de video de 2 cámaras en el AtemMiniPro Tengo 4 meses usando estos productos, 3 veces por semana. El grupo en facebook es una herramienta de ayuda en todo momento. Hollyland es el siguiente nivel en mis trasmisiones en vivo y me permite moverme con mis equipos a cualquier lugar, "no mas cables", wireless te permite nuevas formas de ver tu imagen en tiempo real.
I**S
Perfecto
C**N
Really good quality very happy
C**N
Lavoro nel broadcast dal 1988 e non ho trovato un prodotto pro consumer come il cosmo C1.... Versatile, ottima la resa, minima latenza di trasmissione, insomma sono sbalordito dal suo funzionamento
J**O
La facil conectividad
K**S
Having used a number of the previous Hollyland products over the last couple of years I was really intrigued when the C1 was launched as the published range was an outstanding 1000 ft . Plus some of the additional features like auto channel switching and direct usb streaming from the receiver to usb connection on computer. (I was a little sceptical of the last point as I have never been able to get it to work as advertised on the previous Mars 400s pro) I have only been using it a couple of weeks now but must say how impressed I am with this new model for a number off reasons. Firstly the picture quality and near non existent latency is outstanding. We use this set on one of our roaming cameras and the picture quality is almost indistinguishable from the other cabled camera feeds we use. This really helps in a live mix situation. Secondly the additional range means we have now been able to connect in places where we have been previously limited. I don’t expect to quite get to the 1000 ft range especially in solid brick listed buildings where we often stream, but the additional range means that we have stayed connected where previously would have lost connection for lesser distances- the difference is huge. Thirdly the USB stream pull actually worked for us on this model which is a significant gain, the one thing we discovered was that we could not get USB C to USB C to work but using USB c to USB A and then the included usb a to USB c adapter included with pack worked perfectly (not sure why or if its just our set up) The ruggedised case it comes with is a great bonus so you can safely pack away and keep all the accessories together is an added bonus. The C1 cost more than than the previous 400s pro and Cosmo 600 but in my opinion was worth the extra investment because of the additional reach, reliability and picture quality. Will come back to update as we continue to use this over the next few months but so far so good. - Well done Hollyland. Just an additional note I have said this previously but I have found the technical support and customer service team outstanding in particular Livia who helped us get through some of the initial issues in the early days of using Holllyland products -thank you!
C**.
I ordered this set to use for my live-stream mobile rig at church and I’m super happy with it. Having previously used the Mars 4K and experiencing signal loss when not in direct sight or further than 120 feet, I had high hopes for this one and it delivered. The mushroom antennas work like a charm even when there’s obstacles in between the TX and RX or they are not in direct line of sight. The range is no longer an issue either. This one also has lower latency compared to the Mars 4K and it’s quite noticeable. If you live stream on a regular basis or want to monitor a camera from a distance, this is a great investment.
Trustpilot
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