Alta™ IP Video Caption Encoder

Alta is the answer for any broadcaster planning closed captioning / subtitling in IP video production environments. The virtualized technology connects these modern workflows to the iCap Network - making live captioning / subtitling a seamless and natural part of your programming. Alta powers your application with 24/7 connectivity to thousands of iCap certified captioners across the globe. Additionally, a SCTE-35 insertion component can be licensed for any Alta instance making it possible to inject SCTE-35 Digital Program Insertion Cues directly into your MPEG transport streams. Supports USA / EU / UK standards.

Alta Offers Broadcasters:

Seamless Transitioning - With Alta, modern IP and legacy SDI workflows are unified under the same iCap Cloud - allowing a seamless transition from hardware-driven caption insertion.

Flexible Deployment - Deployed as a standalone virtual machine on VirtualBox, Cisco, or Microsoft Controllers. The technology is also available as a software library for custom integration.

Software Driven Control - Controlled through a web browser interface or via scripting automation tools.

SCTE-35 Insertion Component - Licensed add-on for injecting SCTE-35 program insertion cues directly into MPEG transport streams.

*The SCTE-35 broadcast standard allow broadcasters to place real-time messages into their video stream with a wide range of essential signals for distributors, including when to insert local advertisements into programming, archiving/repurposing restrictions, and indexing information.

Closed Captioning / Subtitling Output Standards:

  • ATSC User Data : (USA broadcast) CTA-708 caption user data in MPEG-2 or AVC/H264 video streams
  • SMPTE 2038 (RDD-11) : CTA-708 captions in VANC wrapper within a transport stream - for use with 4K, HEVC, or JPEG2000 mezzanine streams 
  • DVB Subtitles : (EU/UK broadcast) ETSI EN 300 743 - broadcast carriage of graphically coded subtitles
  • DVB Teletext : (legacy/supplemental EU/UK broadcast) ETSI EN 300 472 - carriage of Teletext coded data in a configurable page for subtitling