D300 4K UHD

D300 4K UHD Video Decoder


D300 4K UHD H.265 video decoder is professional hardware decoding device that can decode multi-channels network video stream (such as IP-Camera, RTSP/RTMP/RTP unicast or multicast media stream). It supports both SDI and HDMI output with resolution up to 4K, and 9 channels video stream decoding to display wall with screen splitting and dynamic switching.

  • SRT
  • 4K H.265
  • Low latency decoding
  • Adjustable resolution
  • Image and text overlay 
  • SDK/API provided
  • Multi-stream switching
  • 9 channels video split to the screen


4K network stream decoding, simultaneous decoding of multiple network streams and multi-screen split output, network stream to the screen/ to switcher, SRT video point-to-point transmission (receiving end), program shooting monitoring (receiving end), monitor to the screen, audio and video projects, conference projects, etc.


Powerful decoding function, support 4k H.265 decoding, support 9 channels video simultaneous decoding output, split display, dynamic switching.

  • Support 4K H.265/H.264 IP stream decoding;
  • Support 9 channels of video simultaneous decoding output (9 channels 1080P30, 8 channels 1080P60 or 4channels 4kP30);
  • Up to 9 channels video decoding and output for 1/2/3/4/6/9 split display, and dynamic switching;
  • Multiple video sources can be added, and 9 video streams dynamic switching output;
  • It can resist 10% network packet loss, and the parameters of decoding delay is adjustable (about 200ms).


SDI and HDMI dual interface outputand support image and text overlay output

  • SDI and HDMI dual interface output, and output the same or different content;
  • HDMI output up to 3840*2160@60Hz and SDI up to 1920*1080@60Hz output, and the output resolution is adjustable;
  • Support SDI and HDMI embedded audio output, or 3.5mm analog audio output;
  • Support for logo, image and text overlay.

Support full protocols, especially NDIHX/SRT
●Support for NDI HX and SRT decoding;

  • Support for RTMP/HLS/TS over UDP/RTSP protocol.


Model No.



2*100M/1000M RJ-45 adaptive Ethernet ports

Video output

1 SD/HD/3G-SDI, up to 1080P60,1 HDMI 2.0, up to 3840*2160@60Hz


Output formats

SDI up to 1080P60Hz; HDMI up to 4k, as follows:


1080i60/59.94/50, 720P60/59.94/50, 576i/50, 480i/60;

HDMI:4K 3840×2160@60/50/30/25,1080p60/50,1080p24/25/30, 1080i60/50,720p60/50, compatible with VESA standard format.

Audio output

SDI/HDMI embedded or analog audio output

Media protocols

NDI|HX/SRT/RTMP/HLS/TS over UDP/RTSP (Note: NDI|HX means NDI|HX Version 2.0)

Video decoding

H.265 /H.264

Audio decoding


Decoding latency


Decoding capability

4K 30Hz: up to 4 channels;

1080P 50Hz/60Hz: up to 8 channels simultaneously;

1080P 30Hz or 1080i 50/60Hz or 720P and below: up to 9 CH simultaneously.

Split screen display

Support 1/2/3/4/6/9 split screen


Web page


12V, 1A /6W


140*105*28mm (5.51*4.13*1.10”)


380g (13.4oz)

Operating temperature



Kindly note: NDI|HX means NDI|HX Version 2.0)

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Quick Comparison

Product Type

Product Model

Output Interface


Decoding Performance

H.265 4K Video Decoder



SDI: up to 1080P60Hz;
HDMI: up to 4KP60;

Up to 9 Video Streams Simultaneously Decoding, 1/2/3/4/5/6/7/8/9 Splitting Screen and Dynamic Switching Supported

H.264 HD Video Decoder


(Compatible with HDMI/VGA)

SDI/HDMI: up to 1080P60Hz;
VGA: UXGA Supported;

Up to 4 Video Streams Simultaneously Decoding, 1/2/3/4 Splitting Screen and Dynamic Switching Supported


(Compatible with HDMI/VGA)

SDI/HDMI: up to 1080P60Hz;
VGA: UXGA Supported;
1920×1080 at 59.94 not supported;

Single Video Stream Decoding