A dynamically adjusted video coding method and related device
A video coding and video technology, applied in the field of video coding, can solve the problems of reducing coding efficiency, unable to realize real-time coding, unable to ensure the memory bandwidth of video encoder, etc.
Inactive Publication Date: 2011-12-21
MEDIATEK INC
View PDF1 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the case of limited system memory bandwidth, once the memory bandwidth required by the video encoder suddenly increases, the method of Maturi et al. cannot ensure that the memory bandwidth used by the video encoder will not exceed the system The maximum memory bandwidth that can be provided, therefore, the system memory will not be able to load and reduce the performance of encoding, and cannot meet the requirements of real-time encoding
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] Please refer to image 3 . image 3 It is a schematic diagram of the video encoding device 200 of the present invention. The video encoding device 200 is used for encoding a digital video data (Digitized Video Data) to generate an encoded bit stream. The video encoding device 200 includes a video interface (Video Interface) 202 for receiving a digital video data; a displacement predictor 204 electrically connected to the video interface 202 for displacing a macroblock in the digital video data Prediction; and an encoding circuit 206, electrically connected to the video interface 202 and the displacement predictor 204, for controlling the entire encoding process and encoding the digital video data through displacement prediction, such as performing discrete cosine transform (Discrete CosineTransform), quantization Operation (Quantization), and variable length coding (Variable LengthCoding) to generate a coded bit stream and perform inverse quantization (InverseQuantiza...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method for a video encoding device to encode video data into a video bit stream. The video data includes at least one picture, and the picture includes a plurality of blocks. A coding and decoding system includes the video coding device, and the coding and decoding system Multiple devices in the system share a memory. The method includes: receiving an available memory bandwidth value currently allowed by the encoding and decoding system; comparing the available memory bandwidth value with the first threshold value and the second threshold value to determine the The encoding type of a block among the plurality of blocks; and encoding the block in the encoding type; wherein if the available memory bandwidth value is not less than the first threshold value, comparing the available memory bandwidth value with the second critical value.
Description
technical field [0001] The present invention relates to a video encoding method, in particular to a method for dynamically adjusting the encoding type of an encoded bit stream when the memory bandwidth allowed by the system changes. Background technique [0002] With the improvement of the calculation speed of electronic circuits, calculations that consume a lot of system resources (such as video processing) have become one of the development priorities of electronic devices. General video processing specifications usually include several encoding types to meet the encoding requirements of various video data. Taking the Moving Picture Coding Experts Group 2 (MPEG 2) standard as an example, it mainly eliminates redundant information in the space and time of the video frame to achieve the effect of video compression. [0003] Generally speaking, there will be some common characteristics on the same video image, which may be in color, may be in geometry, or obtained from other...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32G11B20/10H04N19/50
Inventor 朱启诚
Owner MEDIATEK INC