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Rate Adaptation Transcoding for Precoded Video Streams

Rate Adaptation Transcoding for Precoded Video Streams. Jhijun Lei, Nicolas D. Georganas School of Information Technology and Engineering University of Ottawa Proceeding of the 10 th ACM internation conference on Multimedia, 2002 10 th January, 2007 Dongmahn Seo. Contents. Transcoder

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Rate Adaptation Transcoding for Precoded Video Streams

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  1. Rate Adaptation Transcoding for Precoded Video Streams Jhijun Lei, Nicolas D. Georganas School of Information Technology and Engineering University of Ottawa Proceeding of the 10th ACM internation conference on Multimedia, 2002 10th January, 2007 Dongmahn Seo

  2. Contents • Transcoder • Rate control • Rate control for H.263+ Video Transcoding

  3. Transcoder • CPDT • Cascaded Pixel Domain Transcoder

  4. Transcoder (cont’d) • OLT • Open-Loop Transcoder

  5. Transcoder (cont’d) • DDT • DCT-Domain Transcoder

  6. Rate Control • Frame-Layer bit Allocation • Rate-Quantization Model Based Macroblock-Layer Rate Control • Scene Variation and Scene Change Detection

  7. Rate Control for H.263+ Video Transcoding • Scene Context Dependent Frame Layer Bit Allocation • Macroblock Layer Rate Control mpeg2enc

  8. Rate Control for H.263+ Video Transcoding (cont’d)

  9. Thank You! Any Question?

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