Method for reducing size of multimedia archive

Abstract

The present invention discloses a method for reducing size of a multimedia archive. The method comprises: receiving an original multimedia archive comprising a plurality of images, comparing a plurality of images in the original multimedia archive, deleting a plurality of redundant images which are determined as redundancy in the images, comparing a plurality of audio frequency frames in the original multimedia archive, employing a plurality of mute signs to replace a plurality of mute frames which are determined as the redundancy, and storing other images except the redundant images in the original multimedia archive, other audio frequency frames except the mute frames in the audio frequency frames, a plurality of time stamps, a plurality of frame number indexes and a plurality of mute signs as a compressed multimedia archive. The redundant images in the original multimedia archive are deleted to reduce the size of the multimedia archive.

Description

technical field [0001] The invention relates to a method for reducing the size of multimedia files in a monitoring system, especially a method for reducing the size of multimedia files according to scene characteristics. Background technique [0002] Due to the improvement of modern people's awareness of the protection of themselves and property safety, the installation of monitoring systems at home or offices has become more and more popular. Through the smart network cameras of the monitoring system, users can use mobile devices such as smartphones to realize Watch the multimedia stream captured by the webcam in real time anywhere. At the same time, the real-time multimedia stream can also be continuously uploaded to the cloud server through the network for storage. [0003] However, watching the multimedia stream in real time through the network or storing the multimedia stream to the cloud server requires bandwidth. If the monitoring time is long, the size of the multim...

AI Technical Summary

Problems solved by technology

[0003] However, watching the multimedia stream in real time through the network or storing the multimedia stream to the cloud server requires bandwidth. If the monitoring time is long, the size of the multimedia file and the required bandwidth will increase, which may cause users require considerable expense

Although the current H.264 encoding technology has greatly improved the encoding efficiency, the resolution of the current smart network camera generally reaches 720P. If it is transmitted and stored all the time, the cost will still be high

The same is true for audio streams. When the sound quality requirements are different, the bit rate is also different. Even for a common 8000Hz, mono, 16-bit audio stream encoding, the compressed bit rate is above 30kbps. When it comes to sound quality When the requirements are higher, the code rate will be higher, and the accumulated cost will be considerable

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