The Selenio SEL-1DEC1 module is a full-featured multiformat video decoder that handles both H.264 and MPEG-2 video streams and their commonly associated audio and metadata streams. The decoder is built with the latest silicon architectures and provides a high level of compatibility with the Selenio SEL-1ENC1 encoder module and other industry encoders.
The Selenio decoder supports the decoding of a single video signal from a variety of sources — using either the MPEG-2 or H.264 standards — and supports up to eight audio streams, as well as the processing of any supporting data insertion via VBI or VANC.
The flexibility of the Selenio decoder makes it ideal for production and distribution applications. Coupled with other modules in the Selenio series, this multifunction decoder works to address applications such as multiformat satellite decoding, confidence monitoring and much more.
The Selenio decoder module provides the flexibility of decoding multiple standards of video from standard-definition (SD) and low-resolution formats through to 3 Gb/s and other high-definition (HD) formats. It also supports all the latest audio standards to provide a single-card solution for every need without resorting to a variety of card types.
Up to eight channels of MPEG-1 Layer 2, Dolby® AC-3, AAC-LC, HE-AAC, Dolby® E or SMPTE 302 (uncompressed) audio can be supported. Audio outputs are provided as unbalanced AES or embedded audio.
In addition, VANC and VBI data are re-inserted back into the video signal.
Front Module Connectivity
The SEL-1DEC1 decoder application module is interconnected with the two controller modules for SDI/ASI, 100Base-T for control and monitoring and 1000Base-T for data applications. The primary and backup reference signals are distributed as well.
Back Module Connectivity
The SEL-1DEC1 decoder application module offers two choices for back module external connectivity ― one with HD-BNC electrical connections for input and output, and one with two dual SFP optical outputs. Both back modules provide AES-3 connections by utilizing HD-BNC connectors and a GPI/serial port connector.
SDI and ASI interfaces utilize a Belden-type 1505A, 1694A or 1695A cable with HD-BNC connectors, and AES-3 interfaces utilize a Belden-type 1855 cable with HD-BNC connectors. A cable removal tool is provided for these types of HD-BNC connections. For optical output connectivity, an SFP transmitter can be added to the appropriate back module.
Block Diagrams
Electrical to Electrical (EES)

Electrical to Optical (EOS)

Back Modules
![]() | ![]() |
Specifications and designs are subject to change without notice.
| ASI Input | |
| Number of Inputs | 1 |
| Standard | EN 50083-9 |
| Connector | HD-BNC |
| Data Rate | 0 to 210 Mb/s |
| Minimium Sensitivity | 200 mV |
| Maximum Input Voltage | 88 mV pk-pk |
| Minimum Discrete Connector | -15 dB (0.3 MHz to 1 GHz) |
| SERIAL VIDEO OUTPUT (SDI, HD-SDI, 3 Gb/s) | |
| 3 Gb/s HD-SDI Outputs | |
| Number of Outputs | 2 |
| Standard | SMPTE 424M |
| Connector | HD-BNC |
| Impedance | 75 ohms |
| Signal Level | 800 mV ±10% |
| DC Offset | 0 V ±0.5 V |
| Rise and Fall Time | <135 ps (20% to 80%), differ by no more than 50 ps |
| Overshoot | <10% of amplitude |
| Jitter | Timing jitter: 2 UI pk-pk
Alignment jitter: 0.3 UI pk-pk |
| 1.5 Gb/s HD-SDI Outputs | |
| Number of Outputs | 2 |
| Standard | SMPTE 292M (1.485, 1.485/1.001 Gb/s) |
| Connector | HD-BNC |
| Impedance | 75 ohms |
| Signal Level | 800 mV ±10% |
| DC Offset | 0 V ±0.5 V |
| Rise and Fall Time | <270 ps (20% to 80%) |
| Overshoot | <10% of amplitude (all outputs terminated) |
| Jitter | Timing jitter: <1 UI pk-pk
Alignment jitter: <0.2 UI pk-pk |
| SD-SDI Outputs | |
| Number of Outputs | 2 |
| Standard | SMPTE 259M-C (270 Mb/s, 525/625 component video) |
| Connector | HD-BNC |
| Impedance | 75 ohms |
| Signal Level | 800 mV ±10% |
| DC Offset | 0 V ±0.5 V |
| Rise and Fall Time | 400 to 1500 ps (20% to 80%) |
| Overshoot | <10% of amplitude (all outputs terminated) |
| Jitter | <0.2 UI pk-pk |
| DIGITAL AUDIO OUTPUTS | |
| Unbalanced AES Output | |
| Standard | AES-3, SMPTE 276M |
| Type | Unbalanced, AC coupled |
| Connector | HD-BNC |
| Impedance | 75 ohms |
| Signal Amplitude | 1 V pk-pk @ 10% into 75 ohms load |
| Audio Rate | 48 kHz |
| Rise and Fall Time | 30 to 44 ns (10% to 90%) |
| Bits | 24, 20 or 16 |
| Channel Status and User Bit | Maintained, but professional mode, 48 kHz |
| ASI Outputs | |
| Number of Outputs | 2 |
| Standard | EN 50083-9 |
| Connector | HD-BNC |
| Data Rate | 0 to 210 Mb/s |
| Output Voltage | 800 mV ±10% pk-pk |
| Clock Rate | 270 MHz ±100 ppm |
| Deterministic Jitter | 10% pk-pk |
| Random Jitter | 8% pk-pk |
| Maximum Rise and Fall Time | 1.2 ns (20% to 80%) |
| Power Consumption | 40 W maximum |
| Decoder Hardware Only | |
| SEL-1DEC1-EES | Multi-standard decoder includes decoding of a single channel of video and 4 stereo pairs of audio on the front module, includes single back module with HD-BNC connectors for ASI input, 2 ASI outputs, 2 SDI video outputs, 8 AES (unbalanced) outputs and socket/plug for 4 GPI inputs, 4 GPI outputs and 2 serial data connections |
| SEL-1DEC1-EOS | Multi-standard decoder includes decoding of a single channel of video and 4 stereo pairs of audio on the front module, includes single back module with HD-BNC connector for ASI input, dual SFP optical output (order 1 or 2 SFP dual-output option separately), 8 AES (unbalanced) outputs and socket/plug for 4 GPI inputs, 4 GPI outputs and 2 serial data connections |
| Decoder Module Types | |
| SEL-SK-DE-STD | MPEG-2/H.264 4:2:0 video profile |
| SEL-SK-DE-PRO | MPEG-2 4:2:0 and 4:2:2 video profiles, H.264 4:2:0 up to 1080P 3G support |
| Decoder Options | |
| SELOPT-SK-DE-AUD4 | Software-keyed option for additional 4 stereo pairs of audio available on-board |
| SELOPT-SK-DE-DED | Software-keyed option for support for Dolby® E on 4 stereo pairs of audio |
| SELOPT-SK-DE-DDD | Software-keyed option for support of Dolby® AC-3 2.0 and 5.1 (uses 3 existing stereo pairs of audio) |
| SELOPT-SK-DE-S302 | Software-keyed option to support for up to 8 stereo pairs of SMPTE-302 pass-through audio |
| SELOPT-SK-DE-BISS | Software-keyed option for DVB Fixed-key Scrambling modes BISS-1 |
| Decoder Front Module Only | |
| SEL-FM-1DEC1 | Multi-standard 4:2:0 decoder, front module only |
| Decoder Back Modules | |
| SEL-BM-DEC-EES | Single back module for DEC front module with HD-BNC connectors for ASI input, 2 ASI outputs, 2 SDI video outputs, 8 AES (unbalanced outputs) and socket/plug for 4 GPI inputs, 4 GPI outputs and 2 serial data connections |
| SEL-BM-DEC-EOS | Single back module for DEC front module with HD-BNC connector for ASI input, dual SFP optical output (order 1 or 2 SFP dual-output option separately), 8 AES (unbalanced outputs) and socket/plug for 4 GPI inputs, 4 GP outputs and 2 serial data connections |
| SFP Dual-Output Options | |
| OP+SFP+TT+13+13 | Small Form Factor Pluggable (SFP) for Harris Fiber Optic products; 1310 nm and 1310 nm wavelength dual transmitter with pathological support for baseband video |