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Efficient transcoding video decoding method

A video decoding and transcoding technology, applied in the field of video decoding, can solve problems such as long network transmission time, inability to extract parameter information by the hard decoding module, affecting decoding time, etc.

Pending Publication Date: 2021-11-30
TIANJIN JINHANG COMP TECH RES INST
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Problems solved by technology

[0005] However, Hi3559AV100 belongs to the hard decoding category. When the protocol frame does not fully conform to the decoding protocol, or there are many error frames, the decoding efficiency is relatively low or cannot be decoded, and for the image information with parameter frames, the hard decoding module cannot extract parameter information.
In addition, when the amount of image data is relatively large, the network transmission takes a long time, which seriously affects the decoding time

Method used

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  • Efficient transcoding video decoding method

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Embodiment Construction

[0096] combine figure 1 , in order to solve the video decoding problem under the linux system, a method based on the combination of ffmpeg soft decoding and HiSilicon chip module hard decoding is adopted. The content of the present invention will be further described below.

[0097]1) Configure the compilation properties and parameters of ffmpeg, and transplant the ffmpeg dynamic library to the HiSilicon platform

[0098] First, configure the ffmpeg compilation properties. Then, modify the ffmpeg source code so that it has the function of returning the parameter frame, and cross-compile the ffmpeg source code. Finally, obtain the ffmpeg decoding dynamic library and copy it to the HiSilicon development board.

[0099] 11) First, configure ffmpeg compilation properties, and configure parameters according to platform type, cpu type, codec properties, format conversion properties, and cross-compilation properties.

[0100] 12) Modify the acodec.h file, add variables: parameter...

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Abstract

The invention relates to an efficient transcoding video decoding method. The method comprises the following steps: transplanting an ffmpeg to a Hisilicon platform, and carrying out source code modification on the ffmpeg to enable the ffmpeg to be adaptive to a Hisilicon chip; receiving compressed data transmitted by the host by using a PCIE channel; starting an ffmpeg dynamic library to combine parameter frames and image frames of data transmitted by a network to obtain complete image information, then establishing a filtering mechanism, dynamically screening error frames, analyzing a coding rule, adjusting a data frame sequence in an error data packet, and transmitting a decodable data packet to a hard decoding module of the Hisilicon chip; creating an image acquisition thread, acquiring decoded image data from the decoding channel, and performing format conversion on the image so as to complete a decoding task; finally, creating a sending task of the PCIE channel, and sending the decoded target image data to a host.

Description

technical field [0001] The invention belongs to the video decoding technology under the linux system, in particular to an efficient transcoding video decoding method. Background technique [0002] Hi3559AV100 is a professional 8K Ultra HD Mobile Camera SOC, which provides digital video recording with 8K30 / 4K120 broadcast-level image quality, supports multi-channel Sensor input, supports H.265 encoding output or video-level RAW data output, and integrates high-performance ISP processing, while adopting advanced low-power technology and low-power architecture design, provides users with excellent image processing capabilities. [0003] Hi3559AV100 supports industry-leading multi-channel 4K Sensor input, multi-channel ISP image processing, supports HDR10 high dynamic range technical standard, and supports multi-channel panoramic hardware splicing. Supporting 8K30 / 4K120 video recording, Hi3559AV100 provides hardened 6-Dof digital image stabilization, reducing the dependence on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/44H04N19/40H04N19/42G06F13/42G06F13/28
CPCH04N19/44H04N19/40H04N19/42G06F13/4282G06F13/28G06F2213/0026
Inventor 高娟
Owner TIANJIN JINHANG COMP TECH RES INST