Polistream MSX Monitoring System

The channel monitoring module provides a sophisticated monitoring function to the MSX toolkit. The module creates a subtitle timing signature for each subtitle feed and displays this below each subtitle view.

This is represented as a horizontal bar chart displaying the length and spacing of the subtitles over time. In addition to the subtitle streams signatures can be generated from other sources including a network feed from a Polistream transmission system. These provide independent indications of when subtitles should be present.

In the channel monitor module, the user can set up comparisons between different signature so as to monitor subtitle presence and timing accuracy. This addresses one of the major challenges for subtitle monitoring in knowing if there should be subtitles present or not. By comparing actual subtitle timing against wither a similar language, the signature of the transmission output or the dialogue pattern in the audio stream an intelligent and automatic alarm can be generated.

If there is a mismatch between sources an alarm can be raised to alert the operator. In multi-channel, multi-language systems this removes the need to visually check multiple screens and so free up operator time. The comparison combinations and the level of matching required are all configurable. Once a system is set up for a specific channel(s) it will monitor the subtitle signatures and display the status as green or red bars on the timeline. If the match falls below the set level an alarm will be raised.