Integrated Design of an Embedded Real-Time Multimedia System for H.264/MPEG-4 AVC
Date Issued
2005-07-31
Date
2005-07-31
Author(s)
DOI
932215E002010
Abstract
With the recent development in stream
media, scalable H.264 video encoding is
designed to be used in real-time video
communications systems. The method is
based on the Fine Granular Scalability (FGS)
video coding method. It provides a
framework to adapt to variations in the
channel bandwidth and was recently
standardized in the Streaming Video Profile
of MPEG-4. In this project we proposed and
implemented a simple and effective
real-time layer-based scalable video
communication system. In this system we
use Progressive Fine Granularity Scalable
(PFGS) scheme to encode the enhancement
layer and H.264 to encode the base layer.
This scheme is a direct implementation of
FGS onto H.264 and does not employ any
H.264-specific features for FGS. We also
use the adaptive Layer-Based Least-Laxity-
First (LB-LLF) scheduling algorithm to
improve the output quality of video on
network and to achieve synchronized
playback effect. The experimental results
show that subjective quality of the video
stream is significantly improved using our
methods.
Subjects
Real-Time Operating System (RTOS)
Scheduling
Embedded System
Multimedia
Application
Application
Publisher
臺北市：國立臺灣大學電子工程學研究所
Type
report
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