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A method and system for adding digital watermark to multimedia file

A multimedia file and digital watermarking technology, applied in electrical components, image communication, selective content distribution, etc., can solve the problems of large distribution volume and high computing cost

Active Publication Date: 2020-03-27
北京思维造物信息科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the above-mentioned problems in the prior art, the present invention writes watermarks to specific slices of the digital audio content on the service side by slicing the digital audio content, thereby solving the problems of large distribution volume and high computing cost in the prior art

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  • A method and system for adding digital watermark to multimedia file
  • A method and system for adding digital watermark to multimedia file
  • A method and system for adding digital watermark to multimedia file

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Embodiment Construction

[0079] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0080] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a method and a system for adding a digital watermark to a multimedia file. The method comprises the following steps of: receiving a file acquisition request for a selected fragment in a plurality of fragments of the multimedia file from request equipment; decrypting the encrypted file fragment link to obtain identification information of the selected fragment; obtaining theselected fragment according to the identifier of the selected fragment; extracting a user identifier and a channel identifier in the identification information, and adding the user identifier and thechannel identifier into the selected fragment as digital watermarks to generate a watermark-added selected fragment; and returning the selected segment to which the watermark is added to the requestdevice, so that the multimedia file comprising the selected segment to which the watermark is added has the digital watermark. According to the method and the mechanism for adding the watermark in theonline video-on-demand process, the contradiction between the distribution efficiency and the audio watermark flexibility in a large-scale online audio video-on-demand scene is solved.

Description

technical field [0001] The present invention relates to the technical field of audio digital watermarking, and more specifically, relates to a method and system for adding digital watermarking to multimedia files. Background technique [0002] Audio digital watermarking is a technology that embeds digital watermarks into audio host files (for example, wav files, mp3 files, avi files, etc.) through watermark embedding algorithms, but does not greatly affect the original sound quality of audio files. Normally, the human ear does not perceive this effect. Correspondingly, the audio digital watermark is completely extracted from the audio host file through a watermark extraction algorithm. Generally, this embedded watermark or extracted watermark can also be called audio digital watermark. [0003] With the continuous advancement of network technology and the continuous development of audio / video technology, there are more and more scenes for the public to play music and watch...

Claims

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Application Information

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IPC IPC(8): H04N21/2347H04N21/239H04N21/4405H04N21/8358H04N21/845H04N21/854
CPCH04N21/8456H04N21/8358H04N21/2393H04N21/85406H04N21/4405H04N21/2347
Inventor 张恒
Owner 北京思维造物信息科技股份有限公司
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