Patent
Bit rate control for motion compensated video compression system
Siu-Leong Yu,Yi Liu +1 more
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TLDR
In this article, it was shown that a portion of the number of bits allocated for encoding some of the frames of a group of pictures (GOP) is accumulated in a bit bank and is subsequently used to encode other frames that may require a larger number of bit to encode than those initially allocated for these frames, and when a scene change P frame is detected in a first GOP, a second GOP is formed.Abstract:
A portion of the number of bits initially allocated for encoding some of the frames of a group of pictures (GOP) is accumulated in a bit bank and is subsequently used to encode other frames that may require a larger number of bits to encode than those initially allocated for these frames. Furthermore, when a scene change P frame is detected in a first GOP, a second GOP is formed. The second GOP includes the scene change P frame as well as the remaining unencoded frames of the original GOP. The P frame of the first GOP is changed to an I frame in the second GOP. Furthermore, the frame to be displayed after the I frame of the second GOP is also changed to a duplicate of the I frame of the second GOP.read more
Citations
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Efficient rate control techniques for video encoding
TL;DR: In this article, rate control techniques that can improve video encoding are described, exploiting the relationship between the number of bits encoded per frame and the non-zero coefficients of the video blocks after quantization.
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TL;DR: In this article, a method and apparatus for controlling bit-rates in which an amount of generated bits is adjusted according to the complexity of each frame, and a bit-rate within a frame can be further effectively adjusted by applying different quantization parameter (QP) values to respective macro blocks.
References
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Patent
Method and apparatus for encoding video information
TL;DR: In this article, a method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF structure and, optionally, a bit budget are modified in response to, respectively, information discontinuities and the presence of redundant information in the video stream.
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Video encoding method and apparatus
TL;DR: In this paper, an exemplary video encoder that quantizes pel blocks of a video signal based upon one or more of the following: (i) an actual bit distribution of a previously encoded video frame, (ii) a required decoding delay for a splice point, and (iii) an activity measure of a pel block being encoded.
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System and method for automatically detecting shot boundary and key frame from a compressed video data
TL;DR: In this paper, a system for detecting shot boundary in a compressed video data without decompression includes a difference detector that detects content difference between frames and a threshold selection unit coupled to the difference detector to select the thresholds in accordance with the content difference detected.
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Apparatus and method for allocating bits temporaly between frames in a coding system
TL;DR: In this paper, a method and apparatus for temporally allocating bits between frames in a coding system such that temporal fluctuations are smoothed out is presented, where an average distortion measure is derived from previous picture frames and that average is compared to the distortion measure of a current frame.
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Picture encoding method, picture encoding apparatus, picture transmitting method and picture recording medium
Takashi Kojima,Motoki Kato +1 more
TL;DR: In this paper, a picture encoding method in which an input picture signal is encoded in a pre-set sequence by one of a plurality of encoding modes including at least the intra-frame coding and forward predictive coding for generating encoded data is presented.