H.264 Transcoding of B to P slices by Reusing Motion Vector and Residual Data
We propose a transcoding scheme for converting B to P slices in the H.264 video coding standard without spatial resolution change. When a receiver such as portable player of baseline profile wants to show contents of main profile encoded in the bi-predictive mode, it is desirable to convert B to P s...
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Format: | Tagungsbericht |
Sprache: | eng |
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Zusammenfassung: | We propose a transcoding scheme for converting B to P slices in the H.264 video coding standard without spatial resolution change. When a receiver such as portable player of baseline profile wants to show contents of main profile encoded in the bi-predictive mode, it is desirable to convert B to P slices instead of just discarding the B slices. The proposed scheme makes use of motion vector and its refinement. To utilize previous coding modes and residual data, we develop two mode decision methods of probability-based and neighbor mode-based ones. The experiment results shows that the proposed method speeds up by approximately 54-68% while minimizing quality distortion, as compared to fully re-encoding method. |
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ISSN: | 1738-9445 |
DOI: | 10.1109/ICACT.2007.358554 |