TARA Systems offers flexible software decoders for DVB, IPTV and OTT subtitles standards as part of our Media Player solution and also allows easy integration of the important subtitling feature into existing CE device software.
Subtitling, which is used to display text information for hearing impaired people or translations into several languages, has become an important feature of CE devices. Moreover, supporting subtitles has become mandatory in certain countries.
For the various subtitling standards, TARA Systems offers several flexible, platform-independent decoder solutions, which can easily be integrated into existing software on various embedded platforms.
WebVTT Subtitle Decoder
Web Video Text Format (WebVTT) is a standard for displaying timed text tracks over video content. This is a W3C standard, originally defined for subtitles used for video playback with HTML browsers. Streaming standards like HLS and DASH have adopted WebVTT for supporting subtitles.
With our Inaris WebVTT Decoder, we support WebVTT subtitles with our Inaris Media Player. The WebVTT decoder is a lean implementation without dependency on any HTML browser. The TrueType font used for text rendering can be freely selected by the application. Markup embedded in the subtitles for text styles (bold, italic) as well as text foreground and background colours are supported.
The WebVTT Decoder allows the application to choose from many different text styling options. The text size, color, and background color can be defined by the application. The position of the text can be changed dynamically to avoid overlapping the subtitles by UI elements. Further, the application can apply text shadow or outline effects to the characters for better readability against contrasting backgrounds. This extensive range of configurable properties makes the Inaris WebVTT Decoder a highly flexible solution for presenting subtitles.
DVB Subtitle Decoder
DVB subtitling is the captioning standard in digital television. The decoding and display of DVB subtitles as a feature for CE devices is currently of increasing importance, and will become mandatory in various European countries within the next years.
TARA Systems offers a decoder for DVB SD subtitles and DVB HD subtitles, compliant to the ETSI EN 300 743 V1.3.1 definition. The decoder enables CE manufacturers to integrate the DVB subtitle feature into their applications in a fast and easy way. Compared to other DVB subtitle decoders available in the market today, TARA’s decoder solution produces an improved and robust output and corresponds to all the latest ETSI definition changes. It is designed platform-independent and can therefore easily be ported to various suitable chipsets.
Optional ‘Binding Classes’ for interconnection with TARA’s GUI Tool Embedded Wizard facilitate the integration of the DVB subtitle decoder into a user interface, developed with Embedded Wizard, and allow easy UI customisation and full UI prototyping on PC. The DVB Subtitle Bindings are available for the DVB SD Subtitle decoder only.
Teletext Subtitle Decoder
Teletext is a well-known feature in analogue TV and because of its popularity, it is also available in DVB. Within Teletext, character-based subtitles can be broadcast on specific Teletext pages. TARA Systems offers a Teletext Decoder for Level 1.5 & 2.5 for analogue TV and DVB.