Hollyland Cosmo C2 Video Transmission 2TX/1RX

Hollyland Cosmo C2 Video Transmission 2TX/1RX

Cosmo C2 has been developed by experts with in-depth knowledge and market expertise and features a powerful 2TX and 1RX design for enhanced wireless capability, an ultra-long LOS range of 1,000m and ultra-low latency of just 33ms. Thanks to the newly developed HEVO 2.0 technology, it supports seamless frequency hopping for a smooth and immersive experience. Combined with other powerful features such as NDI support, UVC and RTMP streaming, this innovative kit proves to be a great help for multi-camera live streaming, broadcasting and more.

2x TX & 1x RX

Cosmo C2 enables transmission between two transmitters and one receiver. This configuration reduces the number of devices and cables needed, reduces wireless interference and guarantees better synchronization of video transmissions, all of which contribute to a more productive workflow.

Longer range

Cosmo C2 has an ultra-long LOS (Line-of-Sight) range of up to 1,000 m, making it ideal for professional use in large venues, open areas and complex buildings.

Lower latency (1)

Cosmo C2 achieves an extremely low latency of just 33 ms*. The latency remains the same even over longer distances, ensuring smooth and reliable transmission.

(1) Data based on Hollyland lab results.

Seamless frequency hopping

Thanks to the in-house developed HEVO 2.0 technology, Cosmo C2 automatically detects frequency interference in the environment and seamlessly switches to a clean channel, ensuring uninterrupted transmission and an immersive experience.

NDI protocol support

Cosmo C2's receiver supports the Network Device Interface (NDI) protocol, allowing video streams to be transmitted over a single network cable. This eliminates the complexity and clutter of connections and creates a cleaner production environment.

UVC streaming (2)

Cosmo C2 also supports UVC streaming. With a USB-C to USB-C or USB-C to USB-A cable(3), you can connect the receiver directly to any computer without the need for capture cards, simplifying real-time transmission of video in the field.

(2) Mac only supports receiving one of the UVC videos.
(3) The cable must be a data cable.

RTMP streaming

Cosmo C2 enables RTMP streaming, a streaming method that is widely used due to its low latency and compatibility with a variety of live streaming platforms such as YouTube and Twitch.

FPS Booster (4)

Using a brand new frame rate compensation algorithm, the RX can convert low frame rate input such as 24/25/30P to high frame rate output (60P), resulting in a smoother display.

(4) The FPS Booster is disabled by default. When enabled, "FPS Booster" is displayed on the RX end screen.

Comprehensive ports

The Cosmo C2 transmitter has an HDMI input, an SDI input and an SDI loopout. The receiver has HDMI output A, SDI output A, HDMI output B and SDI output B.

Fractional frame rate

Cosmo C2 can transmit HDMI/SDI fractional frame rate inputs and outputs to meet your flexible recording requirements.

Versatile power options

The Cosmo C2 transmitter supports DC (with latch) and NP-F batteries, while the receiver supports DC (with latch) and V-mount batteries to ensure your production keeps running at all times.

Frozen frame

If the transmission is interrupted, Cosmo C2 freezes the last frame of the video transmission, preventing the manufacturer's logo from being displayed. You can also customize the logo image with a USB flash drive.