Parameters comparison of stored audio/video contents, transcoded using different compression algorithms

Importance of digitalization and compression of AV (audio/video) signals, produced in TV studios, and choose of optimal compression algorithm for different purposes, has been recognized long time ago, and in many countries, TV studios abandoned old analog transmission and storage of analog materials, leaving place for digital signal transmission and storage. In Bosnia and Herzegovina, TV studios are still producing, storing and broadcasting analog PAL signal, but according to recommendation, they should switch to DVB (digital video broadcasting) before 2012. One of DVB applications is VoD (video on demand), witch allows users to request specific AV material, stored on VoD servers, at any time they want. On order to provide that, TV studios must have VoD servers, with stored AV materials, witch they should stream to end users, on their request. Because of the actuality of this problem, the main idea of this paper was to make appropriate software solution for digitalization and trenscoding of analog PAL signal, or transcoding some digital formats, in order to produce AV file with optimal performance, according to QoS and file size, witch should be stored on VoD server. Using developed solutions, different types of compression algorithms, using different video transcoding bit rates, are tested, with the aim to recommend TV stations the solution for storage digital AV signals on VoD servers, with optimal performances, in future DVB network.