Satu Jumisko-Pyykkö
ABSTRACT
Subjectively perceived video quality is a critical factor when adopting new mobile video applications. When video is used in mobile networks the most important requirements are related to low bitrates, framerates and the screen size of mobile device. In two tests we investigated the effects of codecs and combinations of audio and video streams with low bitrates and different contents on the perceived video quality of mobile devices. The first test showed that the codec H.264 produced the most satisfying video quality, but the quality was not high enough for the presentation of textual information. In the second test, the audio-video ratio 32/128kbps was found to be the most pleasant, but there were content dependent variations.
- ANSI T1.801.02, Digital Transport of Video Teleconferencing/Video Telephony Signals - Performance Terms, Definitions, and Examples. New York: ANSI 1996.Google Scholar
- Apteker, R.T., Fisher, J.A.,Kisimov, V.S., Neishlos, H. Video Acceptability and Frame rate. IEEE Multimedia, 3(3):32--40, 1995. Google ScholarDigital Library
- Beerends, J.G. & de Caluwe, F.E. The influence of video quality on perceived audio quality and vice versa. Journal of the Audio Engineering Society, 47 (5), 355--362, 1999.Google Scholar
- Brandenburg K, MP3 and AAC explained, AES 17th International Conference on High Quality Audio Coding. Italy: September 1999.Google Scholar
- Casey, B., Casey, N., Calvert, B., French, L., Justin, L. Television Studies - The Key Concepts. London: Routledge, 2002.Google Scholar
- Finnpanel. Television audience measurements. http://www.finnpanel.fi. (visited 05/2004).Google Scholar
- Fukuda K. Integrated QoS Control Mechanisms for Real-Time Multimedia Systems in Reservation-Based Networks, PhD Thesis. Osaka University; 2000.Google Scholar
- Hands, D. S. A Basic Multimedia Quality Model. IEEE Transactions on Multimedia, Vol. 6, No. 6, December (2004). pp. 806--816. Google ScholarDigital Library
- ISO Standards Handbook 35. Acoustics. 1st ed. p.386. Switzerland; International Standardization Organization, 1990.Google Scholar
- ITU-R BT.500-11 Methodology for the subjective assessment of the quality of television pictures, International Telecommunications Union - Radiocommunication sector, 2002.Google Scholar
- ITU-T P.910 Subjective video quality assessment methods for multimedia applications, International Telecommunications Union - Telecommunication sector, 1999.Google Scholar
- McCarthy, J. D., Sasse M. A. and Miras D. "Sharp or Smooth?: Comparing the Effect of Quantization vs. Framerate for Streamed Video", 2004, Proc. of the 2004 conference on Human factors in computing systems. Vienna: 2004. p. 535--542. Google ScholarDigital Library
- McGurk, H. and MacDonald, J. Hearing lips and seeing voices. Nature, 264, 746--748, 1976.Google ScholarCross Ref
- Reeves, B. & Nass, C. The media equation: How people treat computers, television, and new media like real people and places. Cambridge University Press. 1996 Google ScholarDigital Library
- Van Wassenhove V., Grant K.W., Poeppel D. Visual speech speeds up the neural processing of auditory speech. Proceedings of the National Academy of Sciences of the United States of America, 102(4),1181--6, 2005.Google ScholarCross Ref
- Wiegand T., Sullivan G. J., Bjøntegaard G., Luthra A., Overview of the H.264/ AVC Video Coding Standard, IEEE Transactions on Circuits and Systems for Video Technology, Vol.13,No.7( 2003). pp. 1--19. Google ScholarDigital Library
- Winkler, S. & Faller, C. Audiovisual quality evaluation of low-bitrate video. Proc. SPIE/IS&T Human Vision and Electronic Imaging, vol. 5666. San Jose, United States of America: January 2005. pp. 139--148Google ScholarCross Ref
- Winkler, S. & Faller, C. Maximizing audiovisual quality at low bitrates. Workshop on Video Processing and Quality Metrics for Consumer Electronics. Scottsdale, United States of America: January 2005.Google Scholar
Index Terms
- Evaluation of subjective video quality of mobile devices
Recommendations
"I would like to see the subtitles and the face or at least hear the voice": Effects of picture ratio and audio---video bitrate ratio on perception of quality in mobile television
In new mobile video applications, the subjectively perceived visual and audiovisual qualities are critical factors in the wide audience adoption of mass products. The critical factors in mobile video coding are related to low bitrates, framerates and ...
Subjective Evaluation of Sound Quality for Mobile Spatial Digital Audio
CSSE '08: Proceedings of the 2008 International Conference on Computer Science and Software Engineering - Volume 03In the past decades, technical developments have enabled the delivery of sophisticated mobile spatial audio signals to consumers, over links that range very widely in quality, requiring decisions to be made about the tradeoffs between different aspects ...
Objective and Subjective Video Quality Assessment in Mobile Devices for Low-Complexity H.264/AVC Codecs
WebMedia '17: Proceedings of the 23rd Brazillian Symposium on Multimedia and the WebThis paper discusses results from a quality evaluation experiment involving videos on mobile devices encoded with different configurations of H.264/AVC. The impact of not employing the Fractional Motion Estimation (FME) and the Deblocking Filter (DBF) ...
Comments