Streaming media playback method and equipment

Abstract

The invention relates to a streaming media playback method and streaming media playback equipment. The playback method comprises the following steps of: pre-cutting a video frame of a streaming media to form a plurality of small block frames, and distributing a frame number to each small block frame, so that the numbered small block frame number comprises a frame sequence identifier of an original video frame and a position identifier in the original video frame; then compressing the small block frames respectively, and storing the small compressed block frames into the same file of a hard disk sequentially; and decompressing the small block frames to corresponding positions of corresponding video frames by a plurality of threads of a multi-core central processing unit (CPU) according to the frame sequence identifier and the position identifier of the original video frame of each small block frame so as to synthesize a video frame to be played. According to the method, the decompression speed of the CPU can be increased greatly, and a phenomenon that a picture shakes can be avoided.

Description

technical field [0001] The present invention relates to the technical field of streaming media playing, and more specifically, to a streaming media playing method and playing equipment. Background technique [0002] DirectX is a widely used application programming interface (API) developed by Microsoft, which includes Direct Graphics (Direct 3D+Direct Draw), Direct Input, Direct Play, Direct Sound, Direct Show, Direct Setup, Direct Media Objects, etc. With multiple components, it provides a complete set of multimedia interface solutions. DirectX has now developed into an interface that has a decisive influence on all aspects of the entire multimedia system. [0003] Microsoft DirectDraw supports fast access to the accelerated hardware capabilities of your computer's video adapter. It supports the standard method of displaying graphics on all video adapters and provides faster and more direct access when using accelerated drivers. Microsoft DirectX 9.0c DirectShow provides...

AI Technical Summary

Problems solved by technology

[0005] Since the current CPU has developed to a multi-core CPU, multi-core simultaneous decompression is generally used to solve the problem of CPU decompression speed, so that the CPU decompression speed can keep up with the playback speed, but this will cause a new problem: For the playback of giant screen movies 4K resolution video frame needs to be output in the whole frame, so that the output video does not need to be spliced ​​on the giant screen, otherwise the giant screen playback loses its fundamental meaning

Ordinary players decompress the entire frame and output the entire frame, which makes the operating system unable to evenly distribute the burden of decompression of the entire frame to multiple cores inside the CPU for simultaneous processing. As a result, one core inside the CPU is overloaded while other cores have no burden or In the case of very little burden, as long as one core inside the CPU is overloaded, it will cause the player to drop frames, thus making the playback not smooth;

[0006] 2. The reading speed of the computer hard disk cannot keep up with the playback speed

[0007] To solve the problem that the reading speed of the computer hard disk cannot keep up with the playback speed, a compression algorithm with a high compression rate is generally used, such as: h.264 or MPEG4, etc., but this method will encounter new problems: 1) The video frame is a little distorted, The video quality is not up to the best effect; 2) Due to the high compression rate, it takes time to decompress during playback, and the CPU decompression speed cannot keep up

If the MJPEG2000 standard advocated by today's digital film industry is used for compression, the video quality is good, and the compression rate is also moderate. However, due to the wavelet transform decompression algorithm, decompression is time-consuming and requires the support of a dedicated decompression chip. Pure software cannot solve the CPU problem. Decompression speed bottleneck problem

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