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Hardware decoding dynamic resolution seamless switching method and device and storage medium

A hardware decoding and seamless switching technology, applied in the direction of video signal spatial resolution conversion, standard conversion, electrical components, etc., can solve the problems of unsmooth video, easy switching, poor user viewing experience, etc., and achieve application cost. Inexpensive, easy to implement, and effective in improving user experience

Pending Publication Date: 2020-07-31
SHANGHAI BILIBILI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it takes a certain amount of time for the decoder to initialize, it is easy to freeze when switching, the video is not smooth, and the user's viewing experience is poor.
[0004] How to provide a seamless switching method for hardware decoding resolutions suitable for dash video, avoid stuttering during playback, and improve user experience has become an urgent problem to be solved in this field

Method used

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  • Hardware decoding dynamic resolution seamless switching method and device and storage medium
  • Hardware decoding dynamic resolution seamless switching method and device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The user uses a mobile terminal such as a mobile phone to play the dash video, and the mobile terminal is set to hardware decoding. The playback resolution set at this time is 480P. The dash video starts to decapsulate and obtain the corresponding video stream in H.264 encoding format. Initialize the H.264 hard decoder, and decode the video stream in the H.264 encoding format into frames, that is, the video can start playing at 480P resolution. When the user manually switches the image quality from 480P to 720P, the video encoding output by dash video decapsulation becomes H.265 format, and the first frame of the change needs to carry the extradata initialized by the codec, which is used to initialize the decoder data. After the decoder detects the encoding change, the H.264 hard decoder continues decoding and completes all the data in the buffer; then the H.264 hard decoder stops and recreates the H.265 decoder. Then the H.265 hard decoder starts to decode the video ...

Embodiment 2

[0061] The difference from the above Embodiment 1 is that the mobile terminal such as the mobile phone used by the user can detect the network bandwidth. In the process of playing dash video, after detecting the change of bandwidth, it can automatically judge whether the resolution needs to be adjusted. If adjustment is required, the switching process described in Embodiment 1 is applied to complete the automatic switching according to the current resolution and the target resolution. The automatic switching mode can adapt to the bandwidth to the greatest extent, avoid freezing, and ensure the user's viewing experience.

[0062] The hardware decoding dynamic resolution seamless switching method, device and computer-readable storage medium of the invention are adopted. During the dash video playback, when resolution switching is required, the original decoder continues to decode the video stream in the original encoding format in the cache in the original format. After the vid...

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Abstract

The invention relates to a hardware decoding dynamic resolution seamless switching method and device and a computer readable storage medium, and belongs to the technical field of the Internet. The invention discloses a hardware decoding dynamic resolution seamless switching method and device and a computer readable storage medium. When resolution switching needs to be carried out during the dash video playing process, an original decoder continuously decodes a video stream in an original coding format in the original format, wherein the video stream of the original coding format exists in thecache; and after the original coding format video stream is decoded, a second decoder corresponding to a target coding format is initialized, and a video stream with the target coding format is decoded, so that seamless switching between resolutions is realized, jamming in a playing process is avoided, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field, in particular to the technical field, and specifically refers to a hardware decoding dynamic resolution seamless switching method, device and computer-readable storage medium. Background technique [0002] Existing mobile players can usually provide two video decoding schemes, software decoding and hardware decoding. In general, the player client usually prefers to use hardware decoding, because hardware decoding occupies lower system resources and has higher computing performance. [0003] Dash video is a commonly used network video format. During the playback of dash video, switching video resolution involves changes in video encoding, and the video decoder needs to adapt to switching between H.264 and H.265. Since it takes a certain amount of time for the decoder to initialize, it is easy to freeze when switching, the video is not smooth, and the user's viewing experience is poor. [0004] How ...

Claims

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Application Information

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IPC IPC(8): H04N21/4402H04N21/647
CPCH04N21/4402H04N21/64738H04N21/440263H04N21/44029H04N21/440218H04N21/44209H04N19/188H04N19/423H04N7/0117
Inventor 崔红磊郑翰超陈辉
Owner SHANGHAI BILIBILI TECH CO LTD
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