SMP 351

H.264 Streaming Media Processor
Key Features
  • Process two high resolution AV sources from up to five available input signals
  • Stream and record simultaneously
  • High quality scaling with flexible two-window management
  • Produces MP4 media files that are compatible with virtually any media player
  • Dual Recording and Streaming with LinkLicense®
  • New RTMP streaming protocol supports popular third party hosting services
The Extron SMP 351
Model Version Description Part #
SMP 351 Standard Version – 80 GB SSD 60-1324-01
SMP 351 3G-SDI with 3G-SDI Input – 80 GB SSD 60-1324-02
SMP 351 Standard Version – 400 GB SSD 60-1324-11
SMP 351 3G-SDI with 3G-SDI Input – 400 GB SSD 60-1324-12
LinkLicense SMP 351 80 GB Dual Recording Upgrade 79-2547-01
LinkLicense SMP 351 w/ 3G-SDI 80 GB Dual Recording Upgrade 79-2547-02
LinkLicense SMP 351 400 GB Dual Recording Upgrade 79-2547-03
LinkLicense SMP 351 w/ 3G-SDI 400 GB Dual Recording Upgrade 79-2547-04

The SMP 351 is a high performance streaming and recording processor for capturing and distributing AV sources and presentations as live streaming or recorded media. It incorporates Extron’s FlexOS®, a flexible platform for automating system operation. Accepting HDMI, component, composite, and optional 3G-SDI signals, it applies two-window processing to the selected sources. The SMP 351 can record and stream simultaneously and can stream at two different resolutions and bit rates concurrently using a range of transport protocols and session management options. Comprehensive control and configuration features make the SMP 351 integration-friendly, and easy to control and operate. Requiring no licensing fees, the SMP 351 has a low cost of ownership, making it a cost-effective solution for delivering presentations to a larger audience.

Flexible Signal Support

The SMP 351 processes two high resolution AV sources from up to five available connections. One of two HDMI signals can be selected from Channel A along with analog or HDMI-embedded stereo audio. Channel A also provides a loop through HDMI and audio connection, which can be passed directly to a presentation display. Channel B inputs support common camera formats including composite, component HD, and HDMI. A second model, the SMP 351 3G‑SDI, accepts serial digital video signals supplied by cameras and other professional video sources. The Channel A and B input connections both support computer-video formats from 640x480 to 1920x1200, and video formats from 480p to 1080p/60. They can be switched live during a presentation.

Effective Multi-Window Processing

The SMP 351 offers highly flexible source presentation options. The Channel A and B input signals can be presented on the output individually at full screen or together in any two-window display arrangement including side-by-side. Up to sixteen customized window presets can be prepared, combining the Channel A and B inputs with a PNG background image and metadata. These flexible, multi-source processing features makes it easy to recreate the live presentation experience. They also provide viewers with greater insight into the event’s context, facilitating interpretation and retention of the information presented.

AV Recording with Enhanced Data

The SMP 351 produces an MP4 (M4V) container format, which is compatible with virtually any media player. It records at 480p, 720p, or 1080p resolutions, supporting a variety of quality, storage, and playback requirements. Recordings can include metadata with information such as: Title, Creator, Subject, Description, Publisher, Contributor, and Date, which makes searching, indexing, and managing multiple recordings more efficient. Set chapter marks during recording sessions for highly efficient searching and scanning during file playback. JPEG thumbnail images are captured periodically and for specially marked events. Thumbnail image size is selectable in order to meet the needs of the recording environment.

MP4 recordings can be saved to internal solid state storage, a USB storage device, or a defined network storage directory. USB storage devices connect easily to the SMP 351 from the front or rear panel. The approximate capacity in hours for a 32 GB thumb drive, the SMP 351 internal solid state storage and a 1 TB network drive is presented in the table below. Hours of storage capacity are calculated for video bit rates from 1 Mbps to 10 Mbps plus 192 kbps for audio.

Approximate Storage Capacity in Hours Based on Video Bit Rate and Storage Device
Video Recording Bit Rate 32 GB USB Thumb Drive SMP 351 - 80 GB SSD SMP 351 - 400 GB SSD 1 TB Network Storage
10 Mbps 7 16 80 220
5 Mbps 15 32 160 450
2.5 Mbps 27 64 320 850
1 Mbps 64 160 800 2,000
Storage capacity estimate is calculated using the video recording bit rate plus 192 kbps for audio.

Extensive Streaming Capabilities

The SMP 351 offers extensive streaming capabilities. It can stream concurrently with a recording session at two different resolutions and bit rates from 512x288 to 1080p/30. High resolution, high bit rates can be used to deliver superior quality, presenting video on large screens in overflow applications, while a lower bit rate and resolution can be used for streaming distribution or confidence viewing applications. Streaming bit rates can range from 200 kbps to 10 Mbps for video and 16 kbps to 384 kbps for audio. Both push and pull streaming sessions are supported, offering a range of streaming transport protocols and session management methods. This range of capabilities provides the flexibility to stream from the SMP 351 to a variety of devices in different system configurations and network conditions.

Signal Processing Simplifies Source Management

Like many other Extron AV products, the SMP 351 offers comprehensive digital and analog signal processing features that make interfacing presentation sources easy. EDID Minder® automatically manages EDID communications to ensure sources power up properly and a reliable output signal is provided. Intelligent HDCP-compliant signal management passes encrypted signals to HDCP-compliant connected displays, while presenting a green screen with HDCP message on encoded media sent to non-compliant displays. All signal switching produces clean transitions, with no distracting visual jumps, glitches, or distortion that would distract from recordings and live streaming. Auto-Image™ automatically adjusts source sizing, centering, and filtering and Auto Input Memory saves the size, position, and picture settings of incoming signals, ensuring that sources present properly. Comprehensive picture controls and aspect ratio controls produce quality and accuracy for every application.

Dual Recording and Streaming with LinkLicense

The LinkLicense® for SMP 351 upgrade enables the creation of independent recordings from two different video sources and provides independent archive stream settings for each channel. Users can choose to create a single layout for simultaneous streaming and recording, or create synchronized recordings and streams of two video channels with the dual recording feature. A confidence stream provides a composite of two video sources to monitor both channels from a single stream. To further enhance the capabilities of the SMP 351, LinkLicense enables advanced audio DSP features for level control, filtering, and dynamics as well as streaming presets that increase functionality and provide a simplified workflow.

Highly Adaptable FlexOS Platform

FlexOS is Extron’s flexible, embedded operating system that manages and controls functional systems within the SMP 351. FlexOS makes the SMP 351 easily-adaptable to new requirements over time for a multitude of streaming, recording, processing, control, and presentation applications. A number of Extron applications are available for uploading to the SMP 351 that help automate various system operations via the control ports.

Flexible System Control Options

Many different control capabilities are available from the SMP 351. The front panel buttons and LCD display provide a simple interface to manage, configure, monitor, and control the unit for a wide variety of applications. The SMP 351 also features an RS‑232 port that interfaces with serial devices and control systems and the Ethernet port provides an additional control interface. Using Extron FlexOS programs installed on the SMP 351, specific presentation, streaming, and recording scenarios can be automated using four digital I/O ports.

A USB control port is available on the front panel of the SMP 351 to support direct configuration from a PC. Alternatively, two USB ports on the rear of the unit are available for connection to a keyboard and mouse, to serve as the interface for a web browser that operates from the FlexOS platform. The browser can be viewed from the SMP 351 HDMI output connection and serves as a convenient method to access the SMP 351 embedded web page.

Streaming and recording presets simplify control and management of the SMP 351. Source window layouts and encoding configurations both incorporate many parameter settings that would be challenging to manage independently. Up to sixteen different presets can be saved for source window layouts and sixteen presets can be saved for encoding configurations. They can be recalled easily from the front panel, embedded web page, or an external control system when the SMP 351 is adapted to support different application requirements.

Optional Remote Control - RCP 101 Series

Extron RCP 101 Series remote control panel can extend both front panel control as well as USB connectivity for thumb drive recording media. Available in decorator-style, MK, and EU versions; the EU version is compatible with Flex55 enclosures or EU junction boxes. The included USB and power cables provide up to 15 feet (4.5 meters) of extension to the RCP 101 Series Remote Control Panel. Alternately, a USB extension such as Extron’s USB Extender Plus series can extend signals up to 330 feet (100 meters).

Powerful Tools for Scheduling, Monitoring, and Management

Recording schedules can be automatically updated by configuring the SMP 351 to integrate with Microsoft Exchange or periodically upload a centrally managed iCalendar file. Simple Network Management Protocol - SNMP traps, email and Simple Mail Transfer Protocol - SMTP can be used to deliver messages to AV and IT support staff or monitoring systems when signal errors or encrypted sources are detected and when storage is near capacity, allowing proactive service to be initiated. Operational system data is logged continually, identifying recording sessions, storage directory use, file names, metadata, and storage capacity. This information provides valuable data for evaluating usage patterns and operating concerns.

Content Management and Publishing Options

The SMP 351 produces MP4 (M4V) media files with chapter marks, JPEG thumbnail images, and metadata supporting a data rich playback experience. It can be configured to integrate directly with the Opencast Matterhorn lecture capture AV content management system, commonly used by many higher education institutions or the Kaltura Hosted Video Platform. SMP 351 AV recordings can also be manually uploaded to third party content management systems such as iTunes-U, Blackboard LMS, SharePoint, CaptionSync, YouTube, Moodle, and RSS feeds.

Quality Multi-Source Audio Processing

The SMP 351 provides mixing and basic audio DSP features. The SMP 351 mixes the Channel A and B input signals based on the selected source layout and input configurations. Audio output signals are adjusted automatically during source switches to eliminate potential clicks, pops, or undesired effects, producing a quality audio experience without the need for external processing equipment.

Applications

The SMP 351 is ideal for use in virtually any professional environment where AV sources can be streamed live or recorded for future reference, especially when combining multiple AV sources will enhance the message. Streaming and recording AV presentations allows an organization to communicate and train employees and students that cannot be present at an event. Event recording provides everyone with the opportunity to review and gain insight into the live experience. The SMP 351 can be adapted to many applications, documenting virtually any meeting, conference, or activity that uses an AV source as a reference. The SMP 351 is ideal for use in corporate, education, government, healthcare, courtroom, house of worship, and rental and staging applications. Applications include:

  • Presentation Streaming: Stream presentations to remote viewers
  • Corporate Training Systems: Record training events and publish them for on-demand access
  • Lecture Capture: Record course lectures and upload them to Learning Management Systems
  • Meeting and Conference Recording: Record meetings and videoconferences to document important decisions and agreements
  • Visual Data Recording: Document technical systems that use AV sources as reference data
  • Rehearsal Systems: Practice and evaluate rehearsals and presentations

Features

OPTIONAL ACCESSORIES
  LinkLicense Upgrade Extron Products With Enhanced Features
  CSM 6 Captive Screw to Female 3.5 mm Mini Stereo Jack Adapter
  HDMI Ultra Series Ultra Flexible Premium High Speed and High Speed HDMI Cables
  MBU 149 Low-Profile Mount Kit for Full Rack Width, Four-Piece Enclosures
  USB CFG Cable USB A Male to USB Mini B Male Configuration Cable
RELATED PRODUCTS
  Entwine EMP Enterprise Media Platform for Lecture Capture
  SMD 202 H.264 Streaming Media Player and Decoder
  SMD 101 H.264 Streaming Media Decoder
  SME 100 H.264 Streaming Media Encoder

Specifications

SMP 351 Series
Input
   Number/signal type 3 HDMI digital video (HDCP compliant), 1 component video (Y, R-Y, B-Y; interlaced, progressive, HD), or composite video
Optional: 1 SDI, HD-SDI, or 3G-SDI digital component video
   Connectors 4 female HDMI type A, 3 inputs and 1 loop-through
3 female BNC; component video, composite video
Optional: 1 female BNC: 3G-SDI, HD-SDI, SDI
   Nominal level 1 Vp-p for Y of component video and for composite video
0.7 Vp-p for RGB and for R-Y and B-Y of component video
0.8 Vp-p for 3G-SDI
   Minimum/maximum level Analog: 0.0 V to 1.0 Vp-p with no offset
   Impedance 75 ohms
   Horizontal frequency 15 kHz to 100 kHz
   Vertical frequency 24 Hz to 75 Hz
   Resolution range 640x480 to 1920x1200 (reduced blanking), 480p, 480i, 576p, 720p, 1080i, 1080p, NTSC, and PAL, sampled pixel for pixel
   Return loss (input 3) <-30 dB @ 5 MHz (input 3)
   Return Loss (Input 5, 3G-SDI) >15 dB @ 5 MHz to 1.5 GHz
>10 dB @ >1.5 GHz to 2.97 GHz
   DC offset (max. allowable) 0.5 V
   Input cable equalization Automatic for up to -30 dB of cable loss
      3G-SDI 60 m (200 ft) using Extron RG 6 cable
45 m (150 ft) using Extron RG 59 cable
      HD-SDI 120 m (400 ft) using Extron RG6 cable
  90 m (300 ft) using Extron RG59 cable
      SDI 150 m (500 ft) using Extron RG6 cable
120 m (400 ft) using Extron RG59 cable
Video processing
   Analog sampling 12 bits per color, 13.5 MHz standard (low resolution video), 165 MHz standard (RGB, YUVp, DVI)
   Digital sampling 8-, 10-, or 12-bits per channel
   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 
      SMP 351, SMP 351 3G-SDI 2 H.264/AVC digital video over Ethernet
1 HDMI digital video (HDCP compliant)
      Models with LinkLicense 3 H.264/AVC digital video over Ethernet
1 HDMI digital video (HDCP compliant)
   Connectors 1 female RJ-45 (streaming)
1 female HDMI type A
   Scaled resolution Archive/record: 480p, 720p, 1080p, 512x288, 1024x768, 1280x1024, custom
Confidence: 480p, 720p, 1080p, 512x288, 1024x768, 1280x1024, custom
   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.
Sync
   Input type Tri-level or bi-level component video
   Standards Input: NTSC 3.58, NTSC 4.43, PAL
SDI (SMPTE 259M-C, 270 Mbps), HD-SDI (SMPTE 292M, 1.485 Gbps),
3G-SDI (SMPTE 424M, 2.97 Gbps)
   Input level 0.6 Vp-p for component video tri-level sync
0.3 Vp-p for component video bi-level sync
   Maximum level 5 Vp-p
   Input impedance 75 ohms
Recording and storage
   File system for USB storage FAT32, NTFS, VFAT long file name extensions, EXT2, EXT3, EXT4
   File types H.264 and AAC in an MP4 container, JPEG, JSON, XML
   File transfer protocols FTP, SFTP, CIFS
   Network file share protocols CIFS/SMB, NFS
   Resolution Same as primary streamed resolution: 480p, 720p, 1080p, 512x288, 1024x768, 1280x1024, custom
   Recording frame rate support Same as primary streamed frame rate, up to 30 fps for all output rates
   Internal storage capacity 80 GB (75 GB for recording files) or 400 GB (400 GB for recording files)
   External USB ports 1 (front panel), 1 (rear panel), USB 2.0 (Each port is current limited to 1.5 A.)
   Background image format PNG
Audio input
   Analog 
      Number/signal type 
         SMP 351, SMP 351 3G-SDI 2 stereo, balanced or unbalanced, 1 with loop-through
         Models with LinkLicense Ch. A: 1 stereo, balanced or unbalanced, with loop-through
Ch. B: 1 stereo, balanced or unbalanced, or 2 mono, unbalanced
      Connectors (3) 3.5 mm captive screw connectors, 5-pole
   Digital 
      Number/signal type 3 stereo, digital de-embedded from HDMI
1 loop-through from HDMI
      Connectors 4 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, 1 dB steps, adjustable per input
Audio system (line input to line output)
   Gain -6 dB unbalanced, 0 dB balanced
   Frequency response 20 Hz to 20 kHz, +0.5 dB
   THD + Noise <0.03%, 20 Hz to 20 kHz at maximum output
   S/N >90 dB, at maximum balanced output (unweighted)
   Stereo channel separation >90 dB @ 1 kHz
   Crosstalk < -103 dB, at 20 Hz to 20 kHz, full loaded
   Bass LinkLicense models only: +12 dB to -24 dB @ 100 Hz
   Treble LinkLicense models only: +12 dB to -24 dB @ 8 kHz
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 — analog
   Number/signal type 1 stereo, balanced/unbalanced
   Connectors (1) 3.5 mm captive screw connector, 5 pole
   Impedance 50 ohms unbalanced, 100 ohms balanced
   Maximum level (Hi-Z) >+18 dBu balanced, +12 dBu unbalanced
   Gain error +0.1 dB channel to channel
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output — digital
   Number/signal type 1 stereo, HDMI (re-embedded local preview)
1 AAC-LC digital audio over Ethernet
   Connector 1 female HDMI type A
1 female RJ-45
Digital I/O control
   Number/signal type 4 digital input/output (configurable)
   Connector (1) 3.5 mm captive screw connector, 5-pole
   Digital inputs 
      Input voltage range 0 to 24 VDC, clamped at +30 VDC
      Input impedance 29k ohms
      Programmable pullup 1k ohms to +5 VDC
      Threshold low to high >2.8 VDC
      Threshold high to low <2.0 VDC
   Digital outputs 250 mA sink from 24 VDC maximum
   Pin configurations 1, 2, 3, 4 = digital I/O numbers 1, 2, 3, 4. 5 = Gnd
Communication
   USB 
      USB configuration ports 1 front panel female mini USB B
      Mouse and keyboard port 2 rear panel USB type A
      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 68 - 1500 MTU, adjustable
      Protocols 
         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
         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)
          NOTE     *Indicates that portions of the RFC and other standards may apply.
      Ethernet default settings IP address = 192.168.254.254
Subnet mask = 255.255.0.0
Default gateway = 0.0.0.0
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.)
General
   Power supply Internal
Input: 100-240 VAC, 50-60 Hz
   Power consumption 30 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 Fans, air flow left to right
   Thermal dissipation 96 BTU/hr
   Mounting 
      Rack mount Yes, with pre-installed brackets
   Enclosure type Metal
   Enclosure dimensions 1.7" H x17.5" W x 11.5" D (1U high, full rack wide)
(4.3 cm H x 44.4 cm W x 29.2 cm D)
(Depth excludes connectors.)
   Product weight 6.0 lbs (2.7 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, KCC, VCCI
       NOTE     CE and FCC testing is conducted with STP (shielded, twisted pair) cable.
   Warranty 3 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
(8.1-072016-D6)
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1324-01 4.25" (10.8 cm) 15.5" (39.4 cm) 21.5" (54.6 cm) 9.0 lbs (4.08 kg)
    60-1324-02 4.25" (10.8 cm) 15.5" (39.4 cm) 21.5" (54.6 cm) 9.0 lbs (4.08 kg)
    60-1324-11 4.5" (11.4 cm) 21.5" (54.6 cm) 15.75" (40.0 cm) 9.0 lbs (4.08 kg)
    60-1324-12 4.5" (11.4 cm) 21.5" (54.6 cm) 15.75" (40.0 cm) 9.0 lbs (4.08 kg)

Diagram












Panel Drawing

Panel Drawing
© 2017 Extron Electronics. Specifications are subject to change without notice.