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D300 4K HDMI HEVC Hardware Decoder

Kiloview's Powerful Hardware Video Decoder with Dual Outputs

A Powerful H.265 Hardware Video Decoder

Kiloview D300 decoder is a professional 4K H.265 (HEVC) hardware decoder that brings multiple video streams to both SDI and 4K HDMI. Without relying on a computer, it decodes any IP streams including NDI®|HX2/SRT/RTSP/RTMP/TS-UDP/HLS etc and output the video to display wall in up to 9 grids or free layout, and dynamic switching is supported. It also supports RTMP server for direct connection with encoders, and up to 16 sources for preview on its web page.

Superior IP Video Decoding Performance

It supports decoding up to 4K H.264/ H.265 IP streams and decode the streams to output 3G-SDI and 4k HDMI. It supports decoding up to 9 channels of videos simultaneous.

*Note: 9 channels with 1080P30, or 8 channels of 1080P60, or 4 channels of 4KP30.

All Protocols Supported

It’s compatible with NDI®|HX (2.0) , SRT , RTMP, RTMPS, RTSP, TS-UDP, and HLS, etc. Decoding with the same or different protocol is available.

Low latency and high quality

Intelligent delay control technology to achieve a less than 200ms decoding delay in network environment.

Image enhancement and fault-tolerant technology for low code-encoded video, 10% of network packet loss video, etc., clear and distortion-free decoding output.

RTMP Server Supported

RTMP Server Supported

With RMTP server, the encoder can directly transmit the video to Kiloview decoder using RTMP protocol for decoding without a RTMP platform, to make it easy and convenient.

Dual Output, Same or Different

3G-SDI and 4K HDMI dual interface for outputting, output content can be either the same or different.

(Note:HDMI output up to 3840×2160@60Hz, SDI up to 1920×1080@60Hz.)

Customize Your Output Display

Free Layout: The output display can be either in grids or a free layout with customized design, PIP, PBP, POP, all as you wish.

Free Resolution: The output resolution is adjustable, it also supports de-interlace and frame rate is adjustable

16 Preview + 9 Output with Dynamic Switching

With updated feature, 16 streams of real-time video streams or images can be previewed on its web page, from which you can choose 9 of the streams for output on displaying screen.

Unlimited video sources can be added and freely choose any video source to be decoded, the switching is dynamic and seamless. .

Real-time Intercom

Both embedded and analog audio encoding are supported. What’s more, with Kiloview voice intercom software (optional),
it can realize multi-party voice intercom function. Learn more

Free output background and OSD

D300 can be customized to set a background subject, which supports LOGO, frame, graphic overlay. At the same time, you can preview the customized information..

Product Appearance


D300 can decode 9 channels of network stream and split-screen output at the same time, network stream on-screen/to the switcher, SRT video point-to-point transmission, program shooting, and monitoring, audio and video engineering, conference, etc.

Network Program Production

SRT Remote Transmission

Program Production Monitoring

Audio/Video Engineering

Compatible with TriCaster, vMix, OBS and other platforms, so your video production can be carried out anytime, anywhere.

NDI® is a registered trademark of NewTek Inc.


2*100M/1000M RJ-45 adaptive Ethernet ports
Video output
1 SD/HD/3G-SDI, up to 1080P60,1 HDMI, 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 3840x2160@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/RTP (Note: NDI|HX means NDI|HX Version 2.0)
SDI Transmission Distance
Belden 1694A: SD SDI ≥ 350m; HD SDI ≥ 180m; 3D SDI ≥ 100m
Video decoding
H.265 /H.264
Audio decoding
Decoding latency
<200ms (adjustable)
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 1/2/3/4/5/6/7/8/9 split screen
Web page
12V, 1A /6W
Operating Temperature
140*105*28mm (5.51”*4.13”*1.10”)
380g (13.4oz)
NDI|HX means NDI|HX Version 2.0

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Rackmount Codec

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Quick Comparison of our Decoders

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
3G-SDI + DVI-I (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
H.264 HD Video Decoder
3G-SDI + DVI-I (Compatible with HDMI/VGA)
SDI/HDMI: up to 1080P60Hz; VGA: UXGA Supported; 1920x1080 at 59.94 not supported;
Single Video Stream Decoding
H.264 HD Video Decoder
Encoding Modules: SDI/HDMI/NDI|HX input Decoding Modules: H.265/H.264 Video Decoding, 3G-SDI+4K HDMI Dual-Port Output
A Free Mixture of 4/8/16 Channels, Dual-Power Design