NDLI: A novel algorithm for synchronizing audio and video streams in MPEG-2 system layer

Content Provider	IEEE Xplore Digital Library
Author	Mosharafa, Shereen M. Ebrahim, Gamal A. Zekry, Abdelhalim A.
Copyright Year	2014
Description	Author affiliation: Electronics and Communications Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt (Mosharafa, Shereen M.; Zekry, Abdelhalim A.) \|\| Computer and Systems Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt (Ebrahim, Gamal A.)
Abstract	Audio-video synchronization is a very common quality issue that has a direct effect on the end-user's experience. Audio and video streams are supposed to be synchronized at the transmitter. However, they might be received out of synchronization. In general, loss of synchronization between audio and video streams may be attributed to several factors such as incorrect time-stamping at the transmitter, frame loss, and the different delays introduced by the signal processing and post-processing functions on each stream. Unfortunately, the video pipeline is much complicated as compared with the audio pipeline. Hence, during the journey of the streams from the transmitter to the presentation unit at the receiver, they may be susceptible to different processing delays. These different delays can make the two streams finally presented out of phase. Different algorithms were developed for preserving synchronization at the receiver side in order to provide the best possible perceptual quality. However, most of these algorithms rely on the encoded data of the bit streams. Hence, this paper introduces a new audio-video synchronization algorithm that exploits some features in MPEG-2 system layer. It addresses the misalignment of audio and video streams occurred due to the different processing and post-processing delays. The proposed algorithm relies on both the system clock reference and the relative alignment between the audio and video streams.
Starting Page	142
Ending Page	147
File Size	2480679
Page Count	6
File Format	PDF
e-ISBN	9781479965946
DOI	10.1109/ICCES.2014.7030945
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-12-22
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	transport stream ISO Pipelines Transform coding MPEG-2 FAA Synchronization digital video braodcasting audio-video synchronization Digital video broadcasting
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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