Abstract
Nowadays band-limited terminals are very popular in wireless networking environments, with the result that frame-skipping technology is applied to reduce frame rate for video transmission. In this paper, we propose a dynamic frame-skipping transcoding scheme, where a frame being skipped or not is based on its activity. Whether a frame has relatively drastic motion activities or soft motion activities is evaluated among a certain number of its neighboring frames, which keeps the continuity of the transcoded sequence logically. To reduce the drift errors caused by locating overlapping blocks during the motion vector re-construction process in multi-frame skipping, we propose a new efficient overlapping block location method. A transcoder structure with the proposed dynamic frame-skipping scheme is also designed for hardware application. Simulation shows that the proposed dynamic frame-skipping scheme obtains lower complexity and higher performance, which is especially useful for real-time transcoding.
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Zheng, Y., & Zheng, S. B. (accepted). An efficient overlapping block selection method in multi-frame skipping transcoding. Journal of Circuits, Systems, and Computers.
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Zheng, Y., Zheng, S. A Frame-Activity-Based Dynamic Frame-Skipping Transcoder. Wireless Pers Commun 50, 257–274 (2009). https://doi.org/10.1007/s11277-008-9588-9
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DOI: https://doi.org/10.1007/s11277-008-9588-9