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Content-aware error-resilient transcoding using prioritized intra-refresh for video streaming

Chiou, Hung-Jyh ; Lee, Yuh-Ruey ; Lin, Chia-Wen

Journal of Visual Communication and Image Representation, 2005, Vol.16(4), pp.563-588 [Tạp chí có phản biện]

ISSN: 1047-3203 ; E-ISSN: 1095-9076 ; DOI: 10.1016/j.jvcir.2004.11.009

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  • Nhan đề:
    Content-aware error-resilient transcoding using prioritized intra-refresh for video streaming
  • Tác giả: Chiou, Hung-Jyh ; Lee, Yuh-Ruey ; Lin, Chia-Wen
  • Chủ đề: Video Coding ; Video Transcoding ; Error-Resilient Coding ; Intra-Refresh ; Video Streaming ; Video Coding ; Video Transcoding ; Error-Resilient Coding ; Intra-Refresh ; Video Streaming ; Engineering ; Journalism & Communications
  • Là 1 phần của: Journal of Visual Communication and Image Representation, 2005, Vol.16(4), pp.563-588
  • Mô tả: Transmitting video data over wireless networks can be very unreliable due to packet-loss, leading to serious video quality degradation which is annoying to human perception. The lost packets not only affect the quality of current frame, but also lead to error propagation to subsequent frames due to motion-compensated prediction techniques used in standard video codecs. Adding error-resilience to a video bitstream for robust video delivery to users thus becomes a very important issue. In this work, we propose a two-pass intra-refresh transcoding scheme for inserting error-resilience features to a compressed video at the media gateway of a three-tier streaming system. The proposed transcoder can adaptively vary the intra-refresh rate according to the video content and the channel’s packet-loss rate to protect the most important macroblocks (MBs) against packet loss. In the first-pass encoding, the encoder estimates the amount of error propagation at MB level, and then generates...
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1047-3203 ; E-ISSN: 1095-9076 ; DOI: 10.1016/j.jvcir.2004.11.009

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