Screen has developed innovative solutions to the production and display of quality subtitles for OTT & Web content.

Most standard web-video players use a simple timed-text file for OTT subtitling (e.g. SRT for YouTube, DFXP for Flash and QuickTime and SMIL for Windows Media Player), all of which are easily created in WinCAPS and/or MediaMate. However these solutions rely on this timed-text file being interpreted by the video player and the appearance of the subtitles can therefore differ between players and between devices – with positioning being particularly inconsistent. (Early implementations did not even overlay the subtitles within the video picture area, instead positioning text within a black box beneath the main video.) This means that the subtitle-author cannot be sure as to how the subtitles will appear in font, style or position. Therefore for accurate and consistent presentation these uncertainties need to be overcome.

Screen’s subtitle overlay layer solution for web video involves not only the engine to create the subtitles but also a means to display them in the player. It’s an image based approach to ensure consistent presentation of the subtitles on all players while also improving the visual quality of the subtitles on low-bandwidth connections as the subtitles are not subject to the same compression as the underlying video picture.

Open-source Java plug-ins for each media player allow clients to implement this form of subtitling into their website systems with ease. The plug-in displays the PNG subtitle sequence as an overlay to the main video in synchronisation with the video playback. The subtitles can be turned on/off at the viewer’s control and will even allow the user to select from multiple languages where available.

For a demonstration of our VOD, Live and Real-time web subtitles click the button below.

Subtitling Web Video Informaton

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Web Subtitling Whitepaper

3.82 MB | 1541 downloads