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Aperi MPEG Transport Stream ASI over IP (SMPTE 2022-1,-2,-7)

Encoding and multiplexing for distribution and re-distribution

The Aperi ‘ASI Transport Stream to IP Network Adapter App’ is an FPGA based app that has been designed to run on Aperi’s SDMP microserver. The app can be downloaded to an SDMP from an app store. An Aperi license is needed to create an entitlement to run the app. The app consists of a 4 channel uni-directional transport stream encapsulator and a 4 channel uni-directional de-encapsulator for ASI video signals compliant with DVB and ISO/IEC MPEG-2 transport stream standards. The encapsulation process is compliant with SMPTE 2022-2. The Encapsulator app will automatically detect any valid 188 byte or 204 byte ASI video input on each channel for processing. The Encapsulator app aggregates IP encapsulated MPEG-2 single or multi-program transport streams into a 10GbE interface and also provides a duplicate 10GbE signal for protection purposes. The inverse functions are applied to all receive channels and a PDV buffer is included on each receive channel to absorb network jitter. FEC can be added to each of the 4 IP flows created at the encapsulator which is compliant with SMPTE 2022-1 and the two flows received at the de-encapsulator can be temporally aligned, validated and selected to provide a SMPTE 2022-7 capability. The ASI outputs are presented in packet mode as defined in the DVB-ASI specification. The app can be used in application where it is necessary to connect a standards compliant ASI signal to an Ethernet network or vice-versa. This could be at the ASI output of any Encoder that uses MPEG-2 transport streams. The app is also ideal for transporting ASI singles from over an Ethernet network as a service in a contribution or distribution broadcast network. The user interface is built above an Open RESTful API that exposes all monitoring and configuration parameters. The API has been designed to adhere to the standard cloud model and to enable compliance with the evolving industry standards for device registration and discovery. The API can also be accessed by higher level management systems to allow integration within a single network control platform.

Technical Information

  • Detection of 4 uni-directional channels of ASI compliant with EN 50083-9 carrying single or multi-program transport streams.

  • Extracts 188 byte or 204 byte transport streams from ASI inputs.

  • Encapsulation and de-encapsulation into RTP/UDP/IP packets per SMPTE 2022-2.

  • FEC protection compliant with SMPTE 2022-1.

  • Dual presentation of packets via two separate physical interfaces for optimum per-channel hitless protection in compliance with SMPTE 2022-7.

  • Dual path IGMP V2 and V3 Multicast with fast leave.

  • De-encapsulator PDV buffer for network jitter, configurable up to 200ms. – ASI transport stream outputs linearized in packet mode.

  • RESTFUL HTTP open media API, automatically discoverable, exposing all primitives.

  • Intuitive, automatically discoverable user interface via integrated web server.

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