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Video decoding method and device

A technology of video decoding and decoding algorithm, applied in the field of video decoding methods and devices, can solve the problems of video picture freezing, users cannot obtain video viewing experience, and video pictures are discontinuous, etc.

Active Publication Date: 2015-06-24
BEIJING QIYI CENTURY SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, during the video playback process, the discarded video data will cause discontinuity in the video picture, and the video picture will freeze, and the user cannot obtain a smooth video viewing experience.

Method used

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Embodiment approach

[0091] Optional way 1: In the case of t>the first threshold of decoding time, judge whether the frame type of the current video frame is a non-reference frame: if yes, then use the decoding algorithm set in the simplified video stream to decode the current video frame The chroma component is decoded, and the luminance component of the current video frame is decoded with the decoding algorithm set in the video stream, and if not, the current video frame is decoded with the decoding algorithm set in the video stream.

[0092] Optional way 2: When the second threshold of decoding time < t ≤ the third threshold of decoding time, according to the frame type of the current video frame, judge whether to decode the current video frame with the decoding algorithm set in the simplified video stream : If the current video frame is a non-reference frame, decode the chrominance component of the current video frame with the decoding algorithm set in the simplified video stream, and decode th...

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Abstract

The embodiment of the invention provides a video decoding method and device. The method comprises the steps that firstly, the frame type of current video frames is acquired; secondly, the average decoding time t of the previous N frames among the current video frames is acquired, wherein the average decoding time t is used for showing the current decoding pressure state; thirdly, whether t is larger than a preset decoding time threshold value or not is judged, if yes, whether the current video frames are decoded through a decoding algorithm set in a simplified video stream or not is determined according to the frame type of the current video frames, and if not, it is directly determined that the current video frames are decoded through the decoding algorithm set in the video stream. By adopting the video decoding method and device, the video decoding speed of an intelligent terminal can be effectively increased on the basis of guaranteeing the subjective quality of videos, and smoothness of the videos in the playing process is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of video coding and decoding, in particular to a video decoding method and device. Background technique [0002] The new-generation codec standard H265 has excellent compression performance and can save about half of the bandwidth compared to H264 while ensuring the same subjective picture quality. However, the complexity of H265 encoding and decoding is much higher than that of H264. Therefore, in the current situation where video hardware decoding acceleration is far from popular, it becomes an urgent need to improve the decoding speed of video software decoding. [0003] In the prior art, when the decoding complexity of the video exceeds the decoding capability of the smart terminal, it is usually solved by discarding certain video data. [0004] However, during the video playing process, the discarded video data will cause discontinuity of the video picture, and the video picture will freeze, an...

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Application Information

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IPC IPC(8): H04N19/44H04N19/156
Inventor 费伟唐宇陆骏
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD