A fast information embedding method for mp4 video stream

A fast information and video technology, applied in the field of information hiding, can solve the problems of not being able to achieve the variation range and embedding capacity of the video bit stream, poor robustness, and large video impact, and achieve invisibility, real-time performance, and algorithm speed fast effect

Active Publication Date: 2021-08-17
杭州基尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The watermark is easily removed as noise in the process of video compression, transformation, quantization, etc., and its robustness is poor.
The information hiding algorithm combined with the encoding process often requires a decoding-re-encoding process, which has a greater impact on the video itself and is slower
The information hiding algorithm based on partial decoding also greatly changes the video content, which is likely to cause problems such as video volume expansion and serious degradation of video quality.
It can be seen that the existing video information hiding methods cannot well meet the needs of real-time video transmission, and cannot achieve a good compromise between the variation range of the video bit stream and the embedded capacity. Information hiding method with small flow change

Method used

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  • A fast information embedding method for mp4 video stream
  • A fast information embedding method for mp4 video stream
  • A fast information embedding method for mp4 video stream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 1 As shown, a secret information embedding block of a fast information embedding method for MP4 video code stream. In step S101 among the figure, judge whether the format of input video is MP4 format and video part is based on H.264 compression standard; If so, then continue; Otherwise, give the prompt that can not embed secret information;

[0057] When judging, you can use FFMPEG code to parse the MP4 video file, and judge whether the video part in the MP4 file is encoded in H.264 mode (the audio part is ignored). FFMPEG is a set of open source computer programs that can be used to record, convert digital audio and video, and convert them into streams. It provides a complete solution for recording, converting and streaming audio and video.

[0058] In step S102, the secret information to be embedded is converted into a watermark bit string to be embedded.

[0059] The secret information refers to the original copyright information, fingerprint inform...

Embodiment 2

[0070] Compared with Embodiment 1, this embodiment also provides a device for embedding secret information.

[0071] Such as image 3 As shown, the secret information embedding device includes: an original MP4 video format parsing and judging unit 301, which is used to judge whether the format of the input video is MP4 format and the video part is based on the H.264 compression standard; the watermark unit is generated by the secret information 302, for converting the secret information into a watermark bit string to be embedded through scrambling; the watermark information embedding unit 303, for traversing all frames of the video, locating the last two bytes of the RBSP of each frame and embedding in it 2-bit watermark information; watermarked MP4 video reconstruction unit 304, configured to reconstruct watermarked MP4 video based on all watermarked RBSPs and other unchanged parts.

[0072] generating a watermark unit from the secret information, for converting the secret i...

Embodiment 3

[0076] Compared with Embodiment 1, this embodiment further includes an embedded electronic device.

[0077] Such as Figure 4 As shown, the embedded electronic device includes: an algorithm processor 401; and an embedded algorithm memory 402, which is used to store the program of the secret information embedding method. After the device is powered on and runs the program of the secret information embedding method through the processor, the following steps are executed: Described steps: judge whether the format of original video is MP4 format and video part is based on H.264 compression standard; If so, then continue; Otherwise, give the prompt that can not embed secret information; Will wait to embed secret information and convert into waiting to embed watermark bit string; execute the following three steps for each frame of the video until all watermark bits are embedded or all frames are embedded:

[0078] Locate the last two bytes C1 and C2 of the RBSP of the current frame; ...

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Abstract

The invention discloses a fast information embedding method for MP4 video code stream. As the currently popular video format MP4, its internal video coding standard is H.264; the format of H.264 code stream data has been fully examined, and a A simple, fast and effective code stream information hiding method, device, electronic device and storage device.

Description

technical field [0001] The invention relates to the technical field of information hiding, more specifically, it relates to a fast information embedding method for MP4 video code stream. Background technique [0002] With the rapid development of network multimedia technology and video compression coding technology, people can easily obtain various information through video. The increasing network bandwidth and the increasingly mature digital video streaming technology make the transmission and application of digital video more and more extensive, such as mobile client, digital TV, network video, surveillance video, etc., and also make the scale of network video users continue to grow. However, as a kind of digital information, digital video has the characteristics of rich information, high social value and commercial value, and easy to be copied and tampered with. As the video continues to be hot, problems are also emerging, such as pirated CDs, leaked private videos, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/467H04N21/854
CPCH04N21/85406H04N19/467
Inventor 陆哲明郁发新罗雪雪
Owner 杭州基尔科技有限公司
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