Title :
Quality impact due to initial loading, stalling, and video bitrate in progressive download video services
Author :
Garcia, M.N. ; Dytko, D. ; Raake, A.
Author_Institution :
Telekom Innovation Labs., Tech. Univ. Berlin, Berlin, Germany
Abstract :
The paper targets the audiovisual quality assessment of progressive download type video services such as Video on Demand (VoD) and YouTube. To this aim, we investigate the quality impact due to initial loading, stalling, and video bitrate for High Definition (HD, 1920×1080 pixels) audiovisual sequences. The analysis is based on the results of three audiovisual subjective tests conducted in a laboratory environment. The paper extends the work described in previous studies by looking at high video resolution (HD) for short (30 s) and longer (45-60 s) test sequences, and by addressing the combined effect of initial loading, stalling and video bitrates on perceived quality. The distribution of stalling events within a video sequence and the recency effect are also analysed.
Keywords :
audio-visual systems; image resolution; image sequences; quality of experience; video streaming; HD audiovisual sequences; audiovisual quality assessment; high definition audiovisual sequences; high video resolution; initial loading effect; progressive download type streaming; progressive download video services; recency effect; stalling effect; video bitrate effect; video sequence; Bit rate; Complexity theory; Conferences; Loading; Silicon; Streaming media; Video sequences; Quality of Experience; Video on Demand; YouTube; adaptive streaming; initial loading; progressive download; quality assessment; stalling; video streaming;
Conference_Titel :
Quality of Multimedia Experience (QoMEX), 2014 Sixth International Workshop on
Conference_Location :
Singapore
DOI :
10.1109/QoMEX.2014.6982308
