Title :
Estimating decoding times of MPEG-2 video streams
Author :
Burchard, Lars-Olof ; Altenbernd, P.
Author_Institution :
Center for Parallel Comput., Paderborn Univ., Germany
Abstract :
This paper is motivated through the advantages offered by employing real-time (priority-driven) scheduling (RTS) for efficiently implementing quality-of-service guarantees. For employing RTS (e.g. for conferencing), a-priori knowledge about worst-case execution times (WCET) of the decoding process is required. With our new approach (focussing of MPEG-2 with variable bit rates) the resource usage compared to fixed-bandwidth allocation can be significantly decreased. Solutions for the WCET analysis are presented for two scenarios (video-on-demand (VoD), live-video). A significant reduction of overestimations during WCET analysis of the live scenario can be achieved by using our new technique. In a VoD scenario it is even possible to predict the exact execution times
Keywords :
code standards; data compression; decoding; parameter estimation; quality of service; telecommunication standards; video coding; video on demand; MPEG-2 video streams; QoS guarantees; VoD; conferencing; decoding time estimation; exact execution time prediction; fixed-bandwidth allocation; live video; priority-driven scheduling; quality-of-service guarantees; real-time scheduling; resource usage reduction; video compression standard; video on demand; worst-case execution times; Bit rate; Computer networks; Decoding; Parallel processing; Processor scheduling; Quality of service; Resource management; Streaming media; Timing; Videoconference;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.899507
