A video decoding method and device
A technology of video decoding and video resources, which is applied in the field of video decoding methods and devices, can solve the problems of low video playback frame rate and freezing during playback, and achieve the effects of increasing decoding speed, increasing video playback frame rate, and improving user experience
Active Publication Date: 2020-10-13
ALIBABA (CHINA) CO LTD
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[0005] In view of this, the embodiments of the present invention provide a video decoding method and device, which can improve the decoding speed based on the data processing capability of the mobile terminal, thereby solving the problems of low frame rate during video playback and freezing during playback, and further enabling Improve user experience
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[0023] In the process of video playback, video decoding is an extremely important link, and it is also the link that consumes the most CPU. In the process of video decoding, since the process of pixel-by-pixel interpolation is not only computationally intensive, but also operates frequently, the process of pixel-by-pixel interpolation It is the link with the largest CPU overhead during the video decoding process. Therefore, by reducing the CPU overhead of sub-pixel interpolation, more CPU resources can be liberated, further, the speed of video decoding can be improved, and the frame rate of video playback can be improved. Therefore, the technology of the embodiment of the present invention is proposed plan.
[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all...
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The invention discloses a video decoding method. The video decoding method comprises steps that a to-be-decoded video resource is determined; the to-be-decoded video resource is decoded according to an original algorithm; a frame rate of video playing is calculated, when the to-be-decoded video resource is decoded according to the original algorithm; when the frame rate is smaller than the first standard frame rate of the to-be-decoded video resource, the original algorithm is switched to a first preset algorithm; and the to-be-decoded video resource is decoded according to the first preset algorithm. The invention also discloses a video decoding device. Compared with the prior art, according to the technical scheme provided by the invention, a mobile terminal is provided with at least two decoding algorithms, and when the playing frame rate cannot reach a smooth playing value, when the video is decoded according to the original algorithm, the decoding algorithm is switched, and therefore when the data processing capability of the mobile terminal is not changed, decoding speed is accelerated, the video playing frame rate is improved, the smooth playing of the video is guaranteed, and user experience is improved.
Description
technical field [0001] The present invention relates to the field of Internet technologies, and more specifically, to a video decoding method and device. Background technique [0002] At present, as the functions of mobile terminals are becoming more and more perfect and the screen size is getting larger and larger, there are more and more items that can be run by mobile terminals, so that people can use mobile terminals to read, play games, watch videos, etc. project. [0003] Take using a mobile terminal to watch a video as an example, where each segment of video includes multiple frames of images, and each frame of images consists of multiple macroblocks. Wherein, the macroblock is composed of one luma pixel block and two additional chrominance pixel blocks. Usually, the luma pixel block is a pixel block with a size of 16*16, and the size of the two chrominance pixel blocks is determined according to the sampling format of the image. In order to facilitate the storage a...
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IPC IPC(8): H04N21/4405H04N19/44
CPCH04N21/4405
Inventor 王进波
Owner ALIBABA (CHINA) CO LTD