General Product Overview; Input; Encoding And Output - Extron electronics SMP 300 Series User Manual

General Product Overview

Input

The SMP 300 Series can accept up to three HDMI inputs and one component or
composite video input. The SMP 351 3G-SDI and SMP 352 3G-SDI are identical to the
SMP 351 and SMP 352 with the addition of the 3G/HD/SDI input (input 5). All models
accept digital audio embedded on HDMI signals or analog audio input via captive screw
connectors.
•
•
•
With firmware v3.04 or higher, two additional virtual inputs are available, allowing the SMP to
record up to four inputs. A virtual input must be selected before recording starts and cannot
be changed until the recording is completed (see the SMP 300 Series Embedded Web
Pages Help File to configure the virtual inputs).
NOTES:

Encoding and Output

The SMP models support multiple simultaneous stream encoders. Additionally, the
SMP 352 supports channel A and channel B archive streaming. Each can have a different
resolution, frame rate, bit rate, and independent streaming protocol methods. The output
defaults to both record and stream the selected input.
•
•
In composite mode, signals from the two input channels, a background image, and
metadata (descriptive information about data content) are combined in a user-configurable
layout and encoded into streams. The SMP 300 Series has two encoding types (see
Encoding & Layout
high quality streams (for recording and optional live streaming), and on Confidence encoding
mode for lower resolution streams (for preview within its embedded web pages and optional
live streaming). The video output can be scaled and its aspect ratio modified. The SMP 300
Series also outputs high quality encoded HDMI video with embedded audio on a single
output for display on any HDMI display, supporting resolutions up to 1920x1080 at 60 Hz.
NOTE: Signal flow for both channel A and channel B can be followed from input to
Input 1 (HDMI) and input 2 (HDMI) are grouped as channel A.
Input 3 (component or composite video), input 4 (HDMI), and optional input 5
(3G/HD/SDI) are grouped as channel B.
One video and one audio input can be selected and active per input channel.
The SMP accepts up to two RTSP or Push ES/RTP multicast streams. It records
•
the two virtual inputs at its native resolution into m4v/mp4 files, and allows
re-streaming. In Dual channel mode, the SMP can record up to 4 files plus an
audio-only file.
• The SMP does not decode and composite virtual inputs into a layout.
• For this initial release of the virtual inputs, the SMP cannot connect to a virtual input
stream that requires password authentication.
• Once the virtual input is turned on, the SMP connects with the incoming streams.
The virtual input status can be monitored from the web UI.
• Some RTSP IP camera streams do not include RTCP packets and its packet
received or dropped status is always shown as zero on web UI.
Archive (channel A and channel B in dual channel mode) — Highest quality for both
recording and streaming.
• Channel A default: Pull, unicast RTP/UDP
• Channel B default: Not enabled
Confidence — For streaming only (default: Pull, unicast RTP/UDP).
on page 81). The SMP can encode on archive encoding mode for
output in the block diagram in figure 3 on page 7.
SMP 300 Series • Introduction 6