In this paper, the application for the subtitles support in the hybrid digital TV applications is designed and implemented. The application is written in the C programming language. The work describes various concepts of digital television and MPEG-2 system, DVB signalling tables, used libraries cURL and DirectFB, server thttpd, hardware and software, transport stream and process of creating the subtitles. In adition, it describes the solution, as the software application with all the developed modules, together with their interdependance characteristicks and conducted tests. The application consists of the main module, module for initialization, handling pressed keys, module for preparition of subtitles, module for subtitle processing, module for parsing signalling tables, module for initialization of remote and collecting inputs from the button pressed, module for downloading files from server, graphics module, module for processing of the asynchronous events from remote and module for alignment with the standard ASCII code. The subtitle files are downloaded from a server when channel is changed. In case when the respective language is selected, the subtitle file is parsed and the time that has elapsed from the beggining of the event is calculated so the subtitle is shown on time. The application tests were conducted in order to validate the proper work of the application and to guarantee to the end user the high-quality of services