S2 H.265 4K Video Encoder

4K HDMI input with lower bandwidth and better image quality

S2 H.265 4K Video Encoder

• 4K HDMI Input
• Lower Bandwidth
• Better Image Quality

S2 4K Video Encoder

S2 is an UHD 4K video encoder which is designed to meet the needs of all 4K video transmission applications. The input resolutions is up to 4Kp60 and encoding resolutions is up to 4Kp30. It supports H.265 (HEVC)/H.264 high-performance encoding. Also, it supports the most protocols including NDI|HX/SRT/RTMP/RTMPS/HLS/UDP/RTSP/Onvif, etc.

Adopt H.265 to save over 50% bandwidth

With H.265 HEVC encoding, S2 realizes lower encoding bitrate and save more than 50% bandwidth with same image quality comparing with H.264. (Typical encoding bitrate: H.265: [email protected],H.264: [email protected])

4K transmission to ensure better image quality

With HDMI 2.0 input, S2 supports real 4Kp60 HDMI input and encodes up to 4Kp30. Besides, it is compatible with SD/HD/VESA resolution etc., to meet your needs for a high-quality image.

More Protocols Supported

S2 supports RTSP/RTMP/RTMPS/HLS/TS-UDP/Onvif1.1/2.0/ and NDI|HX, so users can live stream with RTMP/RTMPS, live production with NDI|HX and remote production with SRT, all can be handled at the same time with one device.

Support SRT/NDI/NDI|HX etc

S2 supports RTSP/RTMP/RTMPS/HLS/TS-UDP/Onvif1.1/2.0/ and NDI|HX, so users can live stream with RTMP/RTMPS, live production with NDI|HX and remote production with SRT, all can be handled at the same time with one device.


Audio & Intercom

Both embedded and 3.5mm analog line in audio supported.

Together with Kiloview intercom software, S2 can support intercom functions for better communication. (Supported in software version 2.0+)

Real-time monitoring and preview of the video

The newly-designed Web UI works perfect to preview the video source in real-time, allowing you to monitor the video status at any time.


Live streaming to 16 platforms simultaneously

Dual stream output (main stream and sub stream) , each stream can be sent to 8 platforms with the same or different protocols, altogether S2 can simultaneously live stream to 16 streaming platforms. Main stream resolution up to 4KP30Hz, sub stream resolution up to 1080P60.


It's a Recorder!

S2 features with either by USB for local recording or NAS recording, storage and playback for video while streaming.

Image and text overlay, wherever you like

You can overlay LOGO/text/pictures to any position of the screen. At the same time, professional operations such as rotation/cropping, mirroring, and color adjustment are also available. ( Supported in software version 2.0+).


Powered by PoE & DC 12V

Driven by PoE/5-18V DC/camera battery

S2 is easy to use since it can be powered by PoE and DC 12 V. One ethernet cable can supply power and transmit signals at a time.

Powered by PoE as well as DC5-18V wide range voltage power supply, makes S2 convenient to use.

Application scenes

S2 is widely used in broadcast/conference/program/live streaming and other video IP transmission, interactive connection, video network recording, integrated media projects etc..


Other functions

Embedded audio

SDK/API available

3.5mm Analog Audio Input

High-end Chip

Loop Through

Vertical live streaming

Big-sized Tally

7*24h working

Product parameters

Video interface1 x HDMI 2.0 Input
Analog audio interface1 x 3.5mm
USB interface1 x USB 2.0 Type-A female
Transmission typeEthernet
Video loop1 x HDMI 2.0 loop
Input Video resolutionUp to 4KP60Hz
Video encoding algorithmH.265/HEVC/ H.264/AVC, Motion-JPEG, up to 4KP30
Audio encoding algorithmAAC/G.711
Encoding latency2 frames
Media protocolsSRT/RTMP/ RTMPS/HLS/TS over UDP/RTP/RTSP /Onvif/, NDI|HX/SIP
Tally Supported
Image / Text overlayCustom defined text and picture overlay supported, which can be set to any position on the screen
Video storageUSB extended storage, with NAS storage available
ManagementAPP/ Web/IMS
Power SupplyDC 12V 1A
Power Consumption9w
Working Temperature-20℃~45℃

Related products

S2 H.265 4K Encoder
HDMI 2.0 SRT/NDI|HX, with Intercom
G1/G2 H.264 Wireless Encoder
Wi-Fi/USB Extended 4G / Wired Transmission
P1/P2 H.264 4G Bonding Encoder
SDI/HDMI Input, 4x4G Network Bonding
E1/E2 H.264 Wired Encoder
SDI/HDMI Input/Loop, SRT Supported
SDI/HDMI Rackmount Codec
Mixed Insertion 4/8/16 Channels, Dual Power
M2 H.264 Dual Port Encoder
HDMI+VGA Input, 1080P 60Hz Supported

Quick Comparison of our Encoders

Product TypeModel No. Input InterfaceNetwork ConnectionsResolutionRemark(s)
H.265 4K EncoderS2HDMIEthernet/Satellite4KP60
H.264 4G EncoderP13G-SDI4G/WiFi/Ethernet/Satellite1080P60Built-in Battery, Cold-shoe Installation, Compatible with Outdoor Activities
P2HD HDMI4G/WiFi/Ethernet/Satellite1080P60Built-in Battery, Cold-shoe Installation, Compatible with Outdoor Activities
Rackmount Codec1U-1/2/3/43G-SDI +HDMIEthernet/Satellite1080P60Mixed Insertion of 1-4 Channels of Codec Modules, Dual Power
3U-1/8/163G-SDI +HDMIEthernet/Satellite1080P60Mixed Insertion of 8/16 Channels of Codec Modules, Dual Power
H.264 Wireless EncoderG13G-SDIWiFi/Ethernet/USB Extended 4G/Satellite1080P60
G2HD HDMIWiFi/Ethernet/USB Extended 4G/Satellite1080P60
H.264 Wired EncoderE13G-SDIEthernet/Satellite1080P60