Screen Systems (Hall1, C49) will be offering a real-time demonstration of its live web video subtitling solution at IBC.
Last year, the company started developing a method for served web video playback.
This was to ensure that subtitles are always displayed in the position and style intended on web and OTT content, whilst allowing viewers to select from several language streams without the need to re-encode the video or host multiple copies of media.
Now, Screen Systems has developed a live web video subtitling solution.
In it, some low bandwidth timing information is added to the video stream and used to synchronise subtitles to the frames of video the viewer is watching.
The ‘script’ at the viewer’s device can obtain the current frame’s time value from the video stream and use it to determine when subtitles should be displayed from the subtitle server.
One advantage of the solution is that the same general mechanism of image-based subtitles held on a separate server can be used for consistent broadcast quality subtitling of both VOD and live web video.
