Implementing dynamic GOP in video encoding
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
A novel approach to fast multi-block motion estimation for H.264 video coding
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Fast motion estimation within the H.264 codec
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 3 (ICME '03) - Volume 03
Adaptive scene-detection algorithm for VBR video stream
IEEE Transactions on Multimedia
Low-delay rate control for DCT video coding via ρ-domain source modeling
IEEE Transactions on Circuits and Systems for Video Technology
A sequence-based rate control framework for consistent quality real-time video
IEEE Transactions on Circuits and Systems for Video Technology
On Lagrange multiplier and quantizer adjustment for H.264 frame-layer video rate control
IEEE Transactions on Circuits and Systems for Video Technology
Optimum bit allocation and rate control for H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology
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To reduce the complexity of the bit allocation scheme for real-time video codec and keep an acceptable video quality, an effective rate control scheme combined with the fast mode decision is proposed. The length of each GOP(group of pictures) is dynamically determined according to the content of the video clip. The algorithm employs a MAD-tracing based model to allocate bit budget between frames within the same GOP. More motional and active macroblocks(MBs) get more bits than other MBs in the same frame. The median result then can be reused to accelerate fast mode decision procedure. Experimental results show the proposed methods can enhance the overall quality of compressed video.