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Audio/video compression method

A compression method and technology for audio and video, which are applied in the parts and electrical components of TVs and color TVs, and can solve problems such as attenuated image quality and picture deterioration.

Inactive Publication Date: 2006-12-27
影腾媒体科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0006] From the above information, it can be seen that the key factor that most affects the picture quality and capacity is the ratio of I-pictures 11 and P-pictures 13 in the same GOP 10. If the use of P-pictures 13 in the same GOP 10 can be reduced Using B-picture 12 to calculate and replace (I-picture 11 is the first reference picture and cannot be replaced) will greatly reduce the space occupied by the image, but a large increase in B-picture 12 to replace P-picture 13 will cause The deterioration of the picture and the attenuation of the image quality are really a fly in the ointment

Method used

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Embodiment Construction

[0016] Please refer to Figure 4 , which shows a schematic flow chart of an audio-video compression method according to a preferred embodiment of the present invention. As shown in the figure, the audio-video compression method of the present invention can double the image data stored in a storage medium, and its compression method is far more efficient than the traditional production method, and the compressed DVD finished product can still be compatible with The DVD player of standard specification on the market comprises the following steps: when compressing, the image frame in a picture group is increased to the maximum value allowed (step 41); the original fixed I, B, P frames 11, 12 , The sorting method of 13 is changed into a dynamic prediction (step 42); If the pictures in a group of pictures all belong to static data, then replace the P-picture 13 with B-picture 12, to reduce the capacity that image occupies (step 43 ); and use a quantization matrix with high-frequen...

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Abstract

The video compression method comprises: adding the video figure to the maximal permissive value, changing original order method of I, B and P figures into the dynamic prediction; if all figures in one group as static data, replacing P-figure by B-figure to reduce occupied capacity, and taking positive discrete cosine calculation to figures in the group with high-frequency filter quantifying matrix to obtain a soft figure with a little blur.

Description

technical field [0001] The present invention relates to an audio-visual compression method, especially a method for changing the fixed I, B, and P-picture sorting method in the original picture to a dynamic prediction method to multiply the video-audio compression method stored in a storage medium. Background technique [0002] In the traditional audio-visual post-production industry, the production of video master tapes into commercially available DVD (Digital Versatile Disc) laser discs is mostly done through encoder (Encoder) compression equipment produced in advanced countries such as Europe, the United States, and Japan. Video and audio compression, this production method has good production efficiency and good audio and video quality, but the equipment is expensive, and subject to the influence of the equipment's default specifications, it is impossible to compress the video more efficiently and store the video for a longer time; but in general Commercially available D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/917
Inventor 黄翊证
Owner 影腾媒体科技股份有限公司
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