Method and system for configuring buffer area at streaming media server side based on MPEG (Moving Picture Experts Group)-4

A streaming media server, MPEG-4 technology, applied in the field of communication, can solve the problems of image and video distortion, affecting the quality of streaming media, etc.

Inactive Publication Date: 2012-03-14
江西省南城县网信电子有限公司
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Problems solved by technology

The existing technology solves the danger of buffer overflow, but affects the qual

Method used

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  • Method and system for configuring buffer area at streaming media server side based on MPEG (Moving Picture Experts Group)-4
  • Method and system for configuring buffer area at streaming media server side based on MPEG (Moving Picture Experts Group)-4
  • Method and system for configuring buffer area at streaming media server side based on MPEG (Moving Picture Experts Group)-4

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] The method for configuring the buffer zone based on the streaming media server end of MPEG-4 in the implementation of the present invention mainly includes: calculating the cache occupancy rate of the cached video stream in the current buffer zone; judging that the cache occupancy rate is greater than the preset first The threshold occupancy rate is less than a second threshold occupancy rate, and the second threshold occupancy rate is greater than the first ...

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Abstract

The embodiment of the invention discloses a method and system for configuring a buffer area at a streaming media server side based on an MPEG (Moving Picture Experts Group)-4. The method comprises the following steps of: calculating the cache occupancy rate of cached video streaming in the current buffer area; judging whether the cache occupancy rate is greater than a preset first occupancy rate threshold and is smaller than a second occupancy rate threshold, wherein, the second occupancy rate threshold is greater than the first occupancy rate threshold; if the cache occupancy rate is smaller than the first threshold, adjusting the size of the current buffer area; if the cache occupancy rate exceeds the first threshold and is less than the second occupancy rate threshold, adjusting the video coding rate of the MPEG-4 by controlling the frame rate; and if the cache occupancy rate exceeds the second occupancy rate threshold, releasing frames according to a dynamic frame dropping algorithm. The method and the system have the beneficial effects that on the premise of ensuring no drop frame as far as possible, buffer overflow can be well prevented and effective decoding rate can be improved by dynamically configuring the capacity of the buffer area and adjusting the decoding rate of the frames, thus further improving the video quality.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and a system for configuring a buffer at a streaming media server end based on MPEG-4. Background technique [0002] Server-side buffering technology is an application-level video quality control technology. Its idea is to divide a piece of memory on the server side as a buffer, and smooth network jitter by buffering a certain amount of data. Such as figure 1 As shown, filling_rate(t) indicates the speed at which the encoded video stream is filled into the buffer at moment t. If the encoded video stream is required to be filled into the buffer without loss, at this time, filling_rate(t) is actually equal to the video encoding bit rate . Outing_rate(t) indicates the outflow buffering speed of the video stream at time t, because the video stream will be sent out through the network immediately after outflow, so Outing_rate(t) is actually equal to the current networ...

Claims

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Application Information

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IPC IPC(8): H04N21/6437H04N21/647
Inventor 罗晴明罗春耕
Owner 江西省南城县网信电子有限公司
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