Study On Open-frame Media Player Based On Linux System

With the wide use of video and audio media, the coding technology and format of the media have diversified and complicated. Farther more, the development of the steaming-media techonology causes the progressing of the transmission protocols. In this situation, how to develop an open-frame media player which can supports kinds of formats and protocols is an important research direction in the field of media application. Especially the prevalence of Linux system and the requirement of improved performance of multimedia, to research and develop an open-frame media player base on Linux system is becoming a significant and emergent problem.Aims at playing media with kinds of formats and kinds of transmission protocol, this article describes the progress of develop an open-framed and high scalable media player which can run in Linux system based on existing technology of media player .The main content is as follows:(1) Analyzes the principal and key technology of coding technology, mainstream file format and its decoding technology and then the protocols of mainstreaming media, which provides a foundation of supporting the open-framed media player has the scalability in media file format and transmission protocol from the aspects of the composition and transmission.(2) Proposes the frame of the open media player, which may enable the player to support new media format and new transmit protocol, the player can also play the media locally and distantly. Then, divide the player into modules.(3) Introduces the realization mechanisum of the open-framed player from the aspects of the acquisition of data sources, decoders packaging and selection, audio video playback, player main control module as well as the combination with browser for playing embedded in the browser. The encapsulation and self-adaptation selection of the decoding program and of the transmit protocol are explained in details.(4) Clarifies the real use of the player in an E-learning project and then tests the player in the aspects of function and performance. The testing results show that the player has good performance in the scalability in supporting media file formats and transmmision protocols.This article attaches importance to the combination of theory and practice, start on related theory, analyses and compares prepared theory and achievements, expatiation...