Abstract
Hybrid Broadcast Broadband TV (HbbTV) became very popular during the last few years, because it provides the users with some new services when watching TV. This paper describes the new proposed application for the subtitle support in the hybrid digital TV applications with relatively simple hardware equipment. The subtitle files are downloaded from the server. Once the respective language is selected, the downloaded subtitle file is parsed and the time that has elapsed from the beginning of the event is calculated and the subtitle is shown just on time. Graphical elements are displayed by DirectFB library and the process of downloading subtitle files from the server is realized using thttpd server and cURL library. The application is written in the C programming language and consists of main module, module for parsing of service information (SI) and program-specific information (PSI) tables, module for graphics, module for handling inputs from remote controller, module for downloading of the.srt file from the server and module for parsing of the.srt file. Apart from the basic TV utilities, the proposed application offers the selection of the subtitles language to the user. By pressing the SUBT button on the remote controller, the subtitle menu is shown on the screen and the user can select the appropriate language of subtitles.
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