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A Study of the Effects of H.264 Encoding Parameters on Video Streaming Quality Over Lossy Networks

Azad Disfany, Reza | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41807 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Pakravan, Mohammad Reza; Shirmohammadi, Shervin
  7. Abstract:
  8. Due to the expansion of Data Networks and the ubiquity of high speed Internet, new services especially multimedia services have become more popular. Video streaming is one such service, but video data are quite bulky and need to be compressed for transmission since the network has limited bandwidth. This compression is achieved through a video encoder, such as H.264, which is currently the most advanced video encoder. In addition, the network introduces lag in the form of packet loss, delay and jitter which adversely affect real-time video applications.
    In this thesis, we try to answer the following question in the context of a video streaming application: what encoding parameters should we use in H.264 in order to achieve better video quality in the presence of various network lag parameters. In the first part of the thesis, we analyze the H.264 encoder and explain its important parameters for video streaming. Then we describe various network parameters and we explain related works that try to overcome the influence of network lag on multimedia data. We then do an analysis of a sample public network, and we try to find the imfluence of the encoder parameters on video quality when the video is streamed over those networks. At the end, we present a method for choosing the video encoder’s parameters for such lossy networks to enhance the quality of the streamed video
  9. Keywords:
  10. H.264 Video Codec ; Waste ; Video Content ; Multimedia Streaming ; Packets Loss ; Video Streaming Quality ; Network Parameters

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