Monetise your Live Ultra HD Channel with InStream Ad Insertion

Xylosteam has partnered with General Dynamics Mediaware to bring you InStream for HEVC: a cost effective, digital ad insertion and program splicing technology that is ready to work with Ultra HD content encoded in HEVC.

The InStream suite provides a complete compressed domain ad insertion and program splicing workflow including ingest, format conversion, file management and splicing. InStream can be used to cost effectively upgrade an existing baseband workflow or to create a new end-to-end compressed domain workflow.

There are two primary components to the solution: InStream Splice performs stream-to-file and stream-to-stream splicing, and InStream Convert transcodes file-based source material to match on-air video profiles. InStream Convert is tailored to InStream Splice to provide a complete content preparation and delivery solution.

InStream with HEVC is perfectly suited for operators testing or launching Ultra HD channels who are seeking ways to localise and monetise content, enabling a one-time investment in Ultra HD to be re-used across multiple target audiences and with advertising assets created in Ultra HD or upconverted from HD.

Key benefits from using InStream

Monetize your Ultra HD investment by inserting commercial content such as advertisements with true frame accuracy directly into a “live-to-air” stream

Minimise expenditure on Ultra HD baseband switching systems

High quality program payload insertion

Simplify Ultra HD content production and transmission

Runs on standard IT hardware reducing total cost of ownership

InStream Features

With formidable strength in transport stream processing, GD Mediaware’s InStream is now first with support for HEVC and Ultra HD

High quality digital ad insertion and program

Supports HEVC main-8 and main-10 profiles including resolutions up to Ultra HD

Insert long and short form content with true frame accuracy directly into "live-to-air" digital broadcast

Seamlessly switch between live digital broadcast streams

InStream Specification


  • MPEG-2 SD/HD 4:2:0 and 4:2:2
  • MPEG-4 AVC SD/HD 4:2:0
  • Long and Short GOP
  • Video bit rates up to 15Mbits/s1
  • Teletext (EN 300 472)
  • Frame accurate switch in and out points
  • Stream-to-stream splicing
  • Stream-to-file splicing

System Control Options

  • Web-based Configuration & Management
  • SCTE35 triggering
  • Industry Standard Video Disk Interfacing Protocols2
  • Grass Valley TenXL
  • ASCP

Input & Output Options

  • MPEG-2 Transport Stream over UDP/IP
  • MPEG-2 Transport Stream over DVB ASI
  • MPTS or SPTS Input Streams


  • MPEG-1 and 2 Layer-I and II
  • Dolby© Digital (AC-3)
  • AAC-LC
  • HE-ACC

InStream Convert

  • SD/HD up and down conversion
  • Bit rate adaption
  • Audio format coversion
  • Push or pull file transfer
  • Faster than real-time file conversion for batch file conversion tasks


  • Network Attached Storage (NAS) options
  • Redundancy options


Follow the link to Download the Datasheet for Instream