Decontis - Solutions for Analysis and Monitoring of Mobile DTV and Digital TV broadcasts


Video / Audio Mosaic Wall

ATSC • DVB • ISDB – Audio/Video Mosaic Wall


  • SAMitor is a feature-rich mosaic wall for rendering all video and audio content of Digital TV and Mobile DTV broadcasts.
  • By using SAMcorder as I/O processor and de-multiplexer the SAMitor mosaic wall receives its audio/video inputs from various interfaces, such as live RF reception, live ASI inputs, live IP network inputs and from recorded transport stream files.

At a Glance:

  • support of Digital TV standards
    • ATSC • QAM
    • DVB-T • DVB-T2 • DVB-S • DVB-S2 • DVB-C
    • ISDB-T • ISDB-Tb
  • support of Mobile DTV standards
    • ATSC-M/H
    • DVB-H
    • ISDB 1seg
  • support of a wide range of video codecs and audio codecs
  • SNMP based monitoring of Audio/Video processing (e.g. decoding status, freeze conditions etc.)
  • display of program service states
  • Transport Stream status and info display
  • Audio/Video transcoding + streaming
  • Audio/Video recording
  • Video thumbnail streaming
  • along with SAMspread the whole mosaic wall can be re-encoded as combined video stream at configurable dimensions, a configurable bandwidth and provided via HTTP Live Streaming (HLS) for visual confidence monitoring on any HLS enabled device (HLS is supported e.g. on Android, iOS, Windows, Linux, …)

Video / Audio Mosaic Wall
The Audio/Video content of Digital TV and Mobile DTV services gets displayed in monitor tiles.
The number of tiles displayed within the monitor window is only limited by the memory and CPU resources of the machine where it is running on.
The size of the monitor wall is configurable.
Beside the Audio/Video monitor tiles a tile with date, time and location info and a tile with Transport Stream status info can be displayed, all arbitrarily adjustable.

Video / Audio Mosaic Wall

Program Status Indicators

For each Audio/Video tile of the monitor wall additional program status indicators can be displayed:

  • Program Bitrate
  • EPG
  • Subtitle / Closed Captions
  • Teletext
  • MHP

In case of errors the appropriate tile gets framed in red color.
Also the number of received, decoded and erroneous video/audio frames of the past second can be displayed tile-wise.

A/V monitor tiles with additional status indicators

TS Status and Info Tile

In a separate tile of the monitor wall additional information about the current Transport Stream as well as TS relevant status indicators can be displayed.


  • ID
  • Name


  • ID
  • number of services
  • Bitrate
  • Input interface
  • Broadcast Standard / Mobile DTV indicator

MPEG Status

  • Prio1, Prio2, Prio 3 acc. TR 101 290
  • PID Bitrates
  • DSM-CC carousels

RF Status

  • Frequency, Channel, Bandwidth
  • Rx Level
  • C/N
  • BERaV
  • MER
  • PER

TS info + status tile

SNMP based Monitoring

The status of Audio and Video can be monitored via SNMP.

  • Video Signal Loss
  • Video Freeze
  • Audio Signal Loss
  • Audio Freeze
  • Audio Silence

SAMitor Main Window

Audio/Video Transcoding + Streaming

SAMitor can transcode the Video and/or Audio content of a program to lower dimensions and lower bitrates. The low bitrate Audio/Video content can be streamed via IP to remote locations. This permits e.g. to perform visual confidence monitoring of audio/video content broadcasted at any remote location in the country directly within the central network operation center, thereby utilizing only very less IP bandwidth.

In the sample image an MPEG video with a bitrate of approximately 3 MBit/s gets downscaled and transcoded to H.264, resulting in a video bitrate of appr. 150 kBit/s, whose quality and size is suited very well for playback in the mosaic wall.

Audio/Video Transcoding + Saving

SAMitor can save the audio/video streams onto the local HDD, optionally after downscaling and transcoding them to lower dimensions and bitrates. The recording time can be configured for each service individually from few seconds up to endless.

This feature is especially suited for long-time recording.

E.g. an original 3 MBit/s video needs appr. 32 GByte per day, the transcoded+downscaled video needs only 1,5 GByte per day.

SAM-MT 1000 – A/V Monitoring + Streaming
  • SAMitor on the Monitoring Probe analyses, transcodes and streams the Audio/Video content to Operation Center.
  • In the Operation Center all Audio/Video streams get displayed in the SAMitor mosaic wall.
Video Server
  • from several Monitoring Probes either the entire Transport Stream or already de-multiplexed Audio/Video components are sent to a Video Server running the SAMitor mosaic wall
  • SAMcorder instances on the Video Server receive Transport Streams, de-multiplex the Audio/Video components and feed SAMitor with them
  • SAMitor instances on the Video Server process the Audio/Video streams and stream these downscaled and transcoded to the Operation Center at very low bitrates.
  • SAMitor in the Operation Center displays all Audio/Video streams in the mosaic wall.