Sentry ABR • VNM-SABR

Video Quality Monitors Sentry ABR • VNM-SABR Datasheet
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Features & Benefits

  • Supports up to 250 Top Manifests
  • Supports Apple’s HTTP Live Streaming, Adobe's HTTP Dynamic Streaming and MPEG DASH Protocols with HTTP statistics
  • Proactively monitors all available ABR “media” and “network” from content acquisition (source) to the edge of the network
  • Fetches manifest files and fragments from any place on the network to simulate a subscriber’s request for content
  • Validates all assets, bitrate profiles and manifest files based on a highly parallel HTTP fragment fetching engine
  • Top level manifest file validation is used to automatically discover the sub-stream manifest URLs
  • Performs sub-stream manifest validation and fragment fetching in real time at the manifest-indicated rate
  • Alerts on any mismatch in the bitrate of the sub streams; missing segments (HTTP errors); and excessive segment-fetching latency
  • Reports on the availability of all input manifests (programs) over the network, and their sub streams in the familiar Sentry-product style
  • Supports both 1 GbE and 10 GbE interfaces allowing Sentry ABR to be placed throughout the network for maximum ABR monitoring coverage

Applications

  • Adaptive Bitrate video testing and monitoring at origin servers, CDN (caching servers), and last mile (streaming servers)
  • Quality assurance monitoring for multiscreen video delivery from Pay TV providers
  • Full 60-day historical reporting and real time alerting ideal for testing, proactive monitoring, and troubleshooting
  • Flexible configuration and throttling capability provides flexibility from initial network testing to live 24x7 monitoring of large scale multiscreen service roll outs

 

Sentry® ABR is part of Tektronix’ source-to-edge video quality and service assurance solution for monitoring OTT (Over The Top), TV Everywhere and multiscreen services. Sentry ABR provides a comprehensive and scalable monitoring solution for post-fragmented adaptive bit rate (ABR) streams and supports both 1 GbE and 10 GbE interfaces for maximum ABR monitoring coverage throughout the network.

Sentry ABR supports up to 250 top manifests which translates into a much higher monitoring capacity as each manifest can support up to 12 representations of each program. Sentry ABR supports Apple’s HTTP Live Streaming protocol with HTTP statistics and proactively monitors all available ABR “media” and “network” from content acquisition (source) to the edge of the network.

Manifest files and fragments can be fetched from any place on the network (e.g., origin servers or CDN caching servers) to simulate a subscriber’s request for content. Sentry ABR validates all assets, bitrate profiles, and manifest files based on a highly parallel HTTP fragment fetching engine. In addition, it supports all of the existing alert functionality and reporting capabilities offered in Sentry (including the alert dashboard, program availability and 60-day historical reporting and trending analysis). This enables proactive and comprehensive quality assurance monitoring of all video assets for ABR streaming giving users the ability to identify issues quickly and resolve them before their customers are impacted.

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For OTT, TV Everywhere and Multiscreen video service monitoring, customers typically use the Sentry Video Quality Monitor at the ABR video content preparation stage (pre- and post-transcode) for in-depth QoE (Quality of Experience) monitoring and analysis. Sentry ABR is used at the ABR Video Distribution stage for QoS (Quality of Service) monitoring of all ABR files and fragments.

Characteristics

Characteristic

Description

Browser Support

Firefox, Safari, and Internet Explorer

MPEG/IP Input Port

1000BASE-T Ethernet interface for VNM-SGE and VNM-SASI

10GBASE-(LR or SR) interface for VNM-SXG

Management Port

1000BASE-T Ethernet interface

Supported Protocols

Characteristic

Description

Video

MPEG-2, H.264, VC-1

Audio

Dolby AC-3 (5.1 Surround)

MPEG-1 Layer II (Mono, Stereo)

AAC, HE-AAC, and HE-AAC v2

SPTS or MPTS, multicast (IGMP v3) and unicast

SNMP trap and MIB support

Physical

Dimension

mm

in.

Height

50.8

2

Width

432

17

Depth

381

15

Weight

kg

lb.

Net

9.2

20.2

100-240 V AC, 50-60 Hz power supply

Environmental

Characteristic

Description

Max Storage Temperature

70 °C

Max Operating Temperature

35 °C

Max Humidity

85%

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