SME 211

Streaming Media Encoder
Key Features
  • New Stream video at up to 1080p/60
  • New Bit rates up to 25 Mbps
  • New Enhanced encoding control
  • Process live, high resolution HDMI video and audio
  • Stream at two resolutions and bit rates simultaneously with independent stream control
  • Simultaneous multicast and unicast streaming
The Extron SME 211
Model Version Description Part #
SME 211 Streaming Media Encoder 60-1763-01

The SME 211 is a high performance H.264 streaming media encoder for streaming audio and video signals over IP networks. It accepts an HDMI signal with embedded audio and an analog audio signal. Extron high performance scaling and flexible signal processing facilitate superior display of content from different sources. The SME 211 supports unicast and multicast streaming protocols, including RTMP for streaming directly to major Content Delivery Networks – CDNs, or social media platforms like Facebook and YouTube. Presets allow a quick recall of system configurations. The SME 211 can stream at two different resolutions and bit rates concurrently, supporting up to six simultaneous streams with push and pull streaming. Built in audio mixing and DSP features enable enhanced audio processing without requiring external mixing and DSP equipment.

Extensive Streaming Capabilities

The SME 211 offers extensive streaming capabilities with two simultaneous, independent streams, each with individual control of streaming protocol, bit rate, and stream resolutions ranging from 512x288 to 1080p. The dual encode functionality supports streaming at high resolution to an SMD-series decoder in an overflow room while simultaneously streaming at a lower resolution for remote viewing applications, such as FaceBook Live. Bit rates can range from 200 Kbps to 10 Mbps for video and 80 Kbps to 384 Kbps for audio. A range of streaming transport protocols and session management methods are supported. These capabilities provide flexibility to stream from the SME 211 to a variety of devices in different system configurations and network conditions.

Signal Processing Simplifies Setup and Operation

Like many other Extron AV products, the SME 211 offers comprehensive digital and analog signal processing features that make it easy to connect with various presentation sources. EDID Minder® automatically manages EDID communications to ensure sources power up properly and a reliable output signal is provided. When an encrypted source is detected, intelligent HDCP signal notification presents a green screen with HDCP message to the stream and HDMI confidence output. Comprehensive picture, aspect ratio, size, and position controls provide quality images.

Flexible System Control Options

Many different control capabilities are available on the SME 211. The front panel buttons and LED indicators provide a simple interface to manage, monitor, and control the stream for a wide variety of applications. The unique MASK function triggers a transition from HDMI input to a pre-defined still image, effectively concealing what happens during breaks or set-up without stopping the live stream. The SME 211 also features an RS‑232 port and an Ethernet port to interface with remote devices and control systems.

A USB port on the rear and on the front of the unit are available for connection to a keyboard and mouse, to serve as the interface for the embedded web browser. The browser can be viewed from the HDMI output connection and serves as a convenient method to access network setup and control.


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SME 211
Video input
   Number/signal type 1 HDMI digital video (HDCP content not supported)
   Connectors 1 female HDMI type A
   Horizontal frequency 15 kHz to 100 kHz
   Vertical frequency 24 Hz to 75 Hz
   Resolution range 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 640x480 to 1920x1200*
​*reduced blanking
   Standards DVI 1.0, HDMI 1.4a
   Format RGB and YCbCr digital video
Video processing
   Digital sampling 8-, 10-, or 12-bits per channel, 165 MHz pixel clock (HDMI)
   Digital processing 4:2:2, 8-bits per color
   Compression H.264/AVC (ITU H.264, ISO/IEC 14496-10) 4:2:0, 8-bit color
Encoding profiles: High, Main, Baseline;
Encoding levels: 4.1, 4.0, 3.2, 3.1, 3.0; configurable GOP
   Bit rate 200 kbps to 10 Mbps
   Bit rate control Selectable (variable, constrained, or constant)
   Latency 130 msec* (encode), 600 msec* (encode/decode)
*Indicates minimum latency. Encoder, decoder, and network dependencies apply.
Video output
   Number/signal type 1 H.264/AVC digital video over Ethernet
1 HDMI digital video
   Connectors 1 female RJ-45 (streaming)
1 female HDMI type A
   Scaled resolution HDMI output: 480p, 720p, 1080p, 512x288, 1024x768, 1280x1024
Stream: 480p, 720p, 1080p, 512x288, 1024x768, 1280x1024
   Frame rate Up to 30 fps for all output rates
   Formats H.264/AVC (Profile type: High, Main, Baseline. Profile level: 4.1, 4.0, 3.2, 3.1, 3.0)
    NOTE     Appropriate HDMI to DVI-D cables or adapters are required for DVI signal output.
Audio input
      Number/signal type 1 stereo (balanced or unbalanced)
      Connectors (1) 3.5 mm captive screw connectors, 5-pole
      Number/signal type 1 stereo, digital de-embedded from HDMI
      Connectors 1 female HDMI type A
   Impedance >10k ohms unbalanced, >20k ohms balanced
   Nominal level +4 dBu (1.23 Vrms), -10 dBV (316 mVrms), adjustable via input gain
   Maximum level +18 dBu, (balanced or unbalanced)
   CMRR >70 dB @ 20 Hz to 20 kHz
   Input gain adjustment -18 dB to +24 dB, 0.1 dB steps, adjustable per input
Audio processing
   Sampling rate 16 bit, 48 kHz or 44.1 kHz sampling
   Compression AAC-LC MPEG-4 (ISO/IEC 14496-3:2005)
   Bit rate 80 kbps to 320 kbps, stereo
Audio output — digital
   Number/signal type 1 stereo, HDMI (re-embedded audio)
1 AAC-LC digital audio over Ethernet
   Connector 1 female HDMI type A
1 female RJ-45
      USB configuration port 1 front panel female USB Mini-B
      Mouse and keyboard port Connect via any USB ports on SME 211.
      USB standards USB 1.1, USB 2.0, high/full/low speed hosts
   Serial control 
      Serial control port 1 bidirectional RS-232, rear panel 3.5 mm captive screw connector, 3-pole
      Host control Host control (Extron SIS), bidirectional
      Protocols Data bits: 7 or 8 (default)
Stop bits: 1 (default) or 2
Parity: odd, even, or no (default)
Flow control: no flow control (default)
      Baud rates 9600 (default), 19200, 38400, 57600, 115200
      Serial control pin configurations 1 = Tx, 2 = Rx, 3 = Gnd
   Ethernet control 
      Ethernet host port 1 female RJ-45
      Ethernet data rate 10/100/1000Base-T, half/full duplex with autodetect
      Maximum Transmission Unit 1000-1500 MTU, adjustable
         Streaming Pull: RTP/RTCP (RFC 3550), RTSP (RFC 2326), Interleaved RTSP (RTP/RTSP), RTP/RTSP tunneled through HTTP unicast or multicast
Push: MPEG2-TS/UDP* (ISO/IEC 13818-1), MPEG2-TS/RTP* (RFC 2250, IPTV‑ID-0087, ETSI TS 102 034), Direct RTP (RFC 3984), SAP (RFC2974), SDP (RFC4566), unicast or multicast, RTMP
         Transport TCP, UDP, multicast IGMPv3 (RFC 3376) or unicast
         All supported IGMPv3 (RFC 3376), IP, UDP, SSL, DHCP, HTTP, HTTPS, RTP, RTSP, SNMP V2 (RFC 1213), SAP (RFC2974), SDP (RFC4566), QoS (RFC 2474), NTPv4 (RFC 4330)
      Ethernet default settings IP address =
Subnet mask =
Default gateway =
DHCP = off
   Program control Extron Simple Instruction Set (SIS) Extron DataViewer, Microsoft® Internet Explorer®, Apple® Safari®*, Mozilla® Firefox®*, Google®* Chrome
(*Certain browser dependencies may apply.)
    NOTE     *Indicates that portions of the RFC and other standards may apply.
   Power supply Internal
Input: 100-240 VAC, 50-60 Hz
   Power consumption 23 watts typical
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Cooling Fan, air flow front to rear
   Thermal dissipation 50 BTU/hr
      Rack mount Yes, with optional rack shelf
   Enclosure type Metal
   Enclosure dimensions 1.66" H x 8.68" W x 9.5" D (1U high, half rack wide)
(42 mm H x 221 mm W x 216 mm D)
(Depth excludes connectors.)
   Product weight 2.5 lbs (1.1 kg)
   Vibration ISTA 1A in carton (International Safe Transit Association)
   Regulatory compliance 
      Safety CE, c-UL, UL
      EMI/EMC CE, C-Tick, FCC Class A, ICES, VCCI
       NOTE     CE and FCC testing is conducted with STP (shielded, twisted pair) cable.
      Environmental ​Complies with the appropriate requirements of RoHS and WEEE.
   Product warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.


Panel Drawing

Panel Drawing
© 2021 Extron. Specifications are subject to change without notice.