RU2573768C2 - Method of protecting video materials from unauthorised reproduction and copying - Google Patents

Abstract

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to copy-protection of video materials. A method of protecting video materials from copying and unauthorised reproduction comprises preparing video material; to this end, frames constituting a source video sequence are broken into fragments, thereby processing the entire source video sequence to generate control information for reproducing the video material; video sequence derivatives composed of the frame fragments are obtained after the fragmentation and processing of the fragments, wherein organisation of the video sequence derivative is static or dynamic, which can also be linear or discrete; video information is restored to perceptively identical source information when reproduced using the control information from synchronously reproduced video sequence derivatives accompanied by an audio track.

EFFECT: providing a high degree of protection of video materials from unauthorised reproduction and copying.

15 cl, 27 dwg

Description

FIELD OF THE INVENTION

The invention relates to methods for protecting against copying video materials posted on the Internet, as well as recorded on removable media, and can be used to store, transmit and provide video information to the user, ensuring the legal rights of its owners. The most effective way to watch video content online.

Every year, the volume of video on the network is increasing. There are a large number of services for downloading and viewing videos. These services include youtube, rutube and many others. Currently, online cinemas such as now.ru, ivi.ru, etc. have begun to appear.

State of the art

For all video services, the problem of protecting video documents from copying is relevant. For delivery of video to the user, HTTP Dynamic Streaming is mainly used. With this method of protection, the video document is divided into fragments and delivered to the user in parts. To be able to view it, one must take into account the playback sequence of all fragments [Patent US 8171118. IPC G06F 15/16. Application streaming over HTTP / John Sheehan, Naveed Ahmad, Kristofer Reierson; Microsoft Corporation, Redmond, WA (US). - 12/183956; Claim 07/31/2008; Publ. 05/01/2012] [1].

The known solution is aimed at providing continuous playback of video content with the ability to automatically adjust image quality from the bandwidth of the communication channel, while breaking the video into fragments makes the process of restoring the original video when trying to copy it somewhat difficult, but does not exclude it.

Various variations of protection methods based on Digital Right Management (DRM) technology are known. In one of these protection methods, the content root key is generated using the public key of the client-receiver computer, and the root content key is transmitted to the client-client computer. The data segments of the multimedia file are encrypted and provide encrypted data segments, with each data segment being encrypted with a corresponding content leaf key. Descriptors are added to each of the encrypted data segments [RF Patent No. 2427898, IPC G06F 17/00 (2006.01); H04L 9/00 (2006.01). Protection of digital multimedia with various types of content / KLEMETS Anders E. (US), ALKOU James M. (US), BHATT Sanjay (US), OLIVERA Eduardo P. (US), PAKA Anand (US); MICROSOFT CORPORATION (US). - Application: 2008104858/08; Claim 08/10/2006; Publ. 08/27/2011] [2].

The above protection method is quite reliable, but at the same time it remains possible to decrypt and restore the video material to the original unprotected file.

There are ways to protect against unauthorized copying of video information that use the introduction of watermarks [Application WO 9960791, G06T 1/00; H04N 7/08; H04N 7/081; H04N 7/26; H04N 7/30 METHOD AND APPARATUS FOR WATERMARK DETECTION FOR SPECIFIC SCALES AND ARBITRARY SHIFTS / COLLIER DAVID C; MACROVISION CORP [US]. - WO 1999US03338; Claim 02.17.1999 g. [3]; Application MX 2012011078 (A), IPC H04N 7/167. Video watermarking method resistant to temporal desynchronization attacks / AVALOS PEDRO AARON HERNANDEZ [MX]; URIBE CLAUDIA FEREGRINO; PARRA RENE ARMANDO CUMPLIDO; HERNANDEZ JOSE JUAN GARCIA; INST NAC DE ASTROFISICA OPTICA Y ELECTRONICA [MX]. - MX 20120011078; Claim September 25, 2012] [4].

The methods may use the effect of zooming during the copy process. In this case, a watermark with different scales is introduced into the original video signal. A watermark is maintained at each scale for a predetermined time interval sufficient for the detector circuitry in the digital video recorder to detect, extract, and process the information contained in this watermark. At the end of a predetermined time interval, the sign scale is changed on a pseudo-random basis to ensure that each of all scales appears in a predetermined scale range for a specified number of times [RF Patent No. 2251821, IPC H04N 7/26, G11B 20/10. The method of introducing watermarks in images that are not dependent on zooming / RYAN John O. (US); MACROVISION CORPORATION (US). - Application: 2002105916/09; Claim 08/01/2000; Publ. 05/10/2005] [5].

Known methods of protection using watermarks do not impede the copying of video material as such, more successfully they serve to identify a person who unauthorizedly copied video products and / or using it without permission of the copyright holder.

All currently existing methods, mentioned and not mentioned above, treat video data as a file. Accordingly, protection is based on the fact that any file is considered as a container in which information is recorded. Protection is based on the prohibition or permission to copy and play from a container file without taking into account the type of information being protected and how it is perceived by humans.

Closest to the proposed invention in one of the possible ways of implementation is a solution in which the system reads from a removable medium audio-video data and control information necessary for reproducing this data. The system also receives additional data from an external source. They represent updated and / or additional audio-video data and control information for the storage medium. The system forms a virtual file system by combining the data read from the storage medium and data downloaded from an external source, which allows using additional functions and reproducing additional content for the storage medium [Patent No. 2394288 of the Russian Federation, IPC G11B 20/10 (2006.01). Information providing system, reproducing device, reproducing method, information providing device, information providing method / CATO Motoki (JP), HAMADA Toshiya (JP), KOBAYASI Yoshiyuki (JP); SONY CORPORATION (JP). - Application 2006117983/28; Claim 09/30/2004; Publ. 07/10/2010] [6].

The most justified and more reliable are methods of protection using image distortion. For example, an abnormally low amplitude of a video signal recorded on an illegal copy is used for anti-video copying. In one embodiment, these improvements are introduced into a portion of the television image outside the visible region of the screen, immediately before the line or frame pulses, into the active video signal, a negative signal, which turns out to be a clock signal for the television receiver or VCR, thereby causing premature horizontal or vertical reverse beam travel. In this case, the visibility of the image is significantly impaired. In another embodiment, a gray structure formed in the lower portion of the image outside the visible region of the screen causes vertical image instability. The selected horizontal sync pulses are narrowed, changing the start of the vertical reverse stroke [RF Patent No. 2130237, IPC H04N 7/16, H04N 7/167. An Advanced Method of Protection against Video Copying by Introducing Horizontal and Vertical Image Distortion / Peter J. Wanfor (US), Alistair J. Knox (GB), Jeremy J. Corcoran (GB), John O. Rein (US), Ronald Kwan (US); MACROVISION CORPORATION (US). - Application: 95122715/09, 05/09/1994; Claim 08/01/2000; Publ. 05/10/1999] [7].

All currently known methods and systems perform the task assigned to them, providing a protective function of varying degrees of quality.

Disclosure of invention

The proposed method for protecting video information is built by the author on a fundamentally new approach to the problem and is based on fragmentation of the frame. The essence of the proposed method is defined by the author as a two-dimensional puzzle projection of a dynamic three-dimensional video matrix.

For an unambiguous interpretation of the material presented here are the meanings of the terms used in the description.

“Video image” is an image perceived by a person when playing video material.

“Original image” - video information perceived by the user when playing the “original video”, or information that is identical in perception.

“Video sequence” is a set of frames arranged in a certain order, during the reproduction of which information is perceived as video material.

“Original video sequence” - video / audio information contained in the video material before all transformations are carried out.

"Derived footage" - a footage obtained from fragments of frames when fragmenting the source footage.

"Control information" - information containing coordinates, shapes, sizes, number of fragments, fragment identifiers, location of the source frame in the video sequence, layer order and transparency, the modifiers used for each fragment and other information necessary to restore a video image that is identical in perception " source image. "

“Garbage information” - any information that overlaps with useful information, introducing irreversible distortions and making it difficult to perceive. It serves to complicate the restoration of the “original image” without obtaining “control information”.

The technical result of the invention is to increase the degree of protection against copying and unauthorized reproduction of video materials.

The proposed method of protecting video materials from unauthorized reproduction and copying involves the preparation of video material, for this the frames that make up the original video sequence are divided into fragments. In this way, the entire source video sequence is processed, while the control information necessary for reproducing the video material is formed. After fragmentation and processing of fragments, derived video sequences are obtained, composed of fragments of frames, while the organization of the derived video sequence is performed static or dynamic, each of which can be linear or discrete. When reproducing using control information from synchronously reproduced derivatives of video sequences accompanied by an audio track, the video information is restored to the same perception with the original.

The fragments into which the original image is divided can have various shapes, sizes, or contain parts of neighboring fragments or extraneous “garbage information”.

Fragments can be further processed using reversible effects such as rotation, reflection, negative effect, distortion, and other similar changes.

Fragments are subjected to additional processing using irreversible effects, such as strong blurring, partial reduction in quality, replacing part of the fragment with an extraneous image, for example, a banner, extraneous movie, advertisement or other image.

The control information for reproducing the video material contains the coordinates, shapes, sizes, quantitative characteristics of the fragments, identifiers of the fragments, the location of the frame in the overall video sequence, location, transparency and other information necessary to restore the image to the original one. The generated control information contains information about modifications and distortions made on the received fragments. It contains information about all kinds of rotations, reflections, blurry parts of the video image, scaling and other effects, reversible and irreversible, as well as the order and level of transparency of the layers for sequential blending of fragments when restoring a fragmented frame to an identical perception with the original one.

Derived video sequences are recorded in separate files, either in a common file container, or provide for a different organization of video sequences during direct broadcasting, which saves information in a form suitable for use with the goal of restoring, with its help, the video image to the same in perception with the original one.

Fragmentation is carried out immediately before the broadcast by individual fragmentation for each viewing with the current transfer of control information for immediate reproduction.

The organization of the derived footage is performed static, in which during the fragmentation and playback of the coordinates, sizes and other characteristics of the derived footage do not change with respect to the characteristics of the source footage and derived footage.

The organization of the derived footage is dynamic, while the characteristics of the derived footage (coordinates, scale, shape of the fragment, its 3-dimensional location - i.e. the sequence of overlays, transparency, etc.) are changed during fragmentation and playback.

The organization of the derived video sequence is linear. The derived video sequence in this case is formed from fragments of frames arranged in series.

The organization of the derived footage is performed discrete, while the derived footage is formed from fragments of frames arranged not sequentially. In this case, fragments of the frame from different time intervals of the original footage are recorded in the derived video sequence.

During playback, the conversion of the derived video sequences to video streams and the reverse transformations of the applied reversible effects, such as reverse rotation, reflection return, etc., are performed, then, in accordance with the control information, the video image of the video streams is arranged in coordinates and layers, providing synchronous playback of the necessary derived video sequences, converted to video streams, or parts thereof, as a result of which an image is obtained that is identical in perception to the original.

Derived video sequences made up of fragments are transmitted in several video streams, or in one stream containing all the necessary information.

An audio track for reproducing video material is placed on one of the derived video sequences, either in parts in different video sequences, or in several derived fragments, or separately.

To protect against interception, the control information necessary for high-quality reproduction, containing coordinates, sizes, number of fragments, location of the frame in the video sequence, sequence of overlapping fragments, etc., is additionally encrypted.

The essence and advantages of the present invention are illustrated in the presented illustrative materials, reflecting the preferred options for its implementation. For clarity, the schemes are filled with images.

Brief Description of the Drawings

Figure 1 - shows the original footage;

Figure 2 - frame of the source video;

Figure 3 is a frame of another source footage before fragmentation;

Figure 4 - obtaining from the source fragment of the derived fragment;

Figure 4a is a second derivative fragment when cutting out a portion of the fragment shown in Figure 4;

5 is a derived fragment when cutting from the initial fragment of the middle through part of the frame, while the fragment retains the dimensions of the original frame;

Figa - derived fragment, which is a cut out part of the frame shown in Fig.5;

6 is a derived fragment when cutting from it the middle part;

Fig. 6a is a derived fragment from the cut out part in Fig. 6;

Fig.7 - the source fragment is divided into four parts, while not a single fragment does not save the size of the source frame;

Fig - source fragment is divided into three parts while maintaining the original size;

Figa - the second derived fragment of the original fragment, a breakdown of which is shown in Fig;

Fig.8b is a third derivative fragment of the original fragment, a breakdown of which is shown in Fig.8;

Fig.9 - the original fragment is divided into three parts, obtaining a derived fragment equal in size to the original;

Figa - derivative fragment containing one of the missing parts of the source when the breakdown depicted in Fig.9;

Fig. 9b is a second derivative fragment of Fig. 9 containing a dimming, i.e. containing excess (garbage) part;

Figure 10 - derived fragment obtained from the original by blurring the original frame;

11 - combined distortion of the frame using blur and remove part of the frame from the fragment;

Fig - removed fragment of the frame;

Fig - seized fragment when it is rotated and mirrored;

Fig - seized fragment when it is reflected in the horizontal plane;

Fig - seized fragment when it is reflected in a vertical plane;

Fig - derived fragment is obtained by partial blurring and overlaying the banner;

Fig - derived fragment is obtained using an extraneous picture that covers part of the frame;

Fig. 18 shows the derivation of a video footage from a source one with linear organization of a video footage;

Fig. 19 shows a derivation of a video sequence with its discrete organization.

Figure 20 is a variant of the discrete organization of the derived video sequence, while the video sequence is built from different fragments of one and subsequent frames.

The implementation of the invention

The preparation of video material for online viewing is carried out by means of a personal computer on any operating system using software tools designed for a specific operating system manually or automatically. It all depends on the chosen method of implementing the technology, programming language, libraries, etc.

First, fragmentation parameters are set. These include the maximum number of fragments per frame, the maximum and minimum fragment sizes, the used fragment shapes, the use of the dynamic method, discrete recording, fragmentation complexity — with automatic breakdown. Or the selection of areas that should make up a separate video sequence - with semi-automatic splitting. This also includes finding the audio track, etc. The control information can be generated and recorded or used without recording, in accordance with the playback algorithm for a particular video file.

The source video 1 contains a set of frames 2 arranged in a certain order (Fig. 1 and Fig. 2). Fragmentation of the source footage is as follows.

The frame of the original video sequence is cut into pieces, while obtaining derivative fragments, the type and quantity of which can be different. The source frame 3 (FIG. 3) can be fragmented in such a manner as shown in FIG. 4 to obtain a derived fragment 4 and a derived fragment 5 (FIG. 4 a), while the derived fragment 4 saves the size of the original frame 3.

Derived fragment 6, preserving the size of the original frame, obtained by cutting from its middle part of the frame fragment in the form of a strip (Figure 5). Fig. 5a shows a derivative fragment 7 representing the cut out middle part. Figure 6 shows a fragmentation variant in which the middle part is cut out of frame 3 in the form of a rectangle. The resulting derivative fragment 8 is shown in Fig. 6a. The coordinates of the cut-out part, its shape and dimensions are recorded on a computer-readable medium and form the necessary control information for the permitted (licensed) playback of the video material.

When fragmenting, shown in Fig.7, get 4 derived fragments, positions 9, 10, 11 and 12.

A fragmentation option is possible, in which the frame is divided into four parts, removing two of them (positions 13 and 14), forming three derived fragments (Figs. 8, 8a and 8b).

Figure 9 shows fragmentation in which the original fragment is divided into three parts. Part 15 is equal in size to the original fragment and does not contain the missing parts 16 (Figa) and 17 (Fig.9b). Part 17 contains an additionally darkened area. If the order of the layers is not observed during playback, the darkened (garbage) part of fragment 17 will not allow to restore the original fragment. In this case, the mandatory arrangement of the layers in order, starting from part 15, should be performed. Fragment 17 (Fig. 9) is superimposed on top of it and on top of both previous fragment 16 (Fig. 10a).

An irreversible effect in the form of strong blur is shown in FIG. 10.

Fragmentation and modification variants of derived fragments can be used both individually and in various combinations. For example, blur and a translucent banner or partial blur and partial removal (Fig. 11), or blur, partial removal and closing an extraneous image (Fig. 16).

When fragmenting, you can apply the rotation of the removed fragment (Fig.12, Fig.13, Fig.15). Turns can be simple or mirror.

Derived fragments may contain parts of neighboring fragments, an image that is extraneous to a given fragment, which, if properly restored, is blocked by a significant fragment of the frame, as shown in Figs. 9, 9a and 9b.

A portion of the original fragment may be replaced with a cover image, for example, an advertising banner or commercial (Fig. 16). Also, the image may be translucent, for example, for undeleted advertisements or information about the copyright holder, which will be blocked by the removed derivative fragment, during licensed viewing, but at the same time, during unlicensed viewing, the translucent picture may allow you to watch video with the advertisement present on it.

It is possible to insert fragments that do not contain useful information - “garbage” fragments, which will make it difficult to restore the image to the original one, or contain information not related to the original video (Fig. 17).

So frame-by-frame process the entire video sequence. The main thing is that from all the fragments located in a certain correct sequence, it was possible to restore the original frame.

For this purpose, use the "control information", ie that necessary and sufficient information containing coordinates, shape parameters, sizes, number of fragments, fragment identifiers, location of the source frame in the video sequence, layer order and transparency, the modifiers used for each fragment, and other information necessary to restore the video material, based on a perception identical to the original video footage.

The coordinates, shapes, sizes, number, identifiers of fragments, the location of the frame in the overall video sequence, location, transparency and other properties of the fragments necessary to restore the image to the original are recorded. Possible modifications and distortions made with the resulting fragments are also recorded, namely: all kinds of rotations, reflections, blurring of parts of the picture, scaling and other effects, reversible and irreversible. Also record the location of the layers, i.e. sequence of overlapping fragments to compose a single frame of the original image. If there is more than one significant fragment, it is desirable that not a single fragment contains the entire source frame.

At the same time, the location of the fragments, their coordinates, sizes, shapes and quantity, and other parameters related to the information necessary for quality viewing, control information, can vary for different frames or groups of frames. After processing, the output is a set of independent video sequences composed of fragments of frames with possible additions and changes. Footage can be recorded in separate files, or in a common file container, or in another way that saves information in a form suitable for further playback and recovery. Or it is possible to transfer all the necessary data to the user for immediate playback.

Derived footage can be static, i.e. during playback, the coordinates, sizes and other characteristics of the footage do not change with respect to other footages, as shown in the diagram depicted, for example, in Fig. 7, and dynamic. With the dynamic organization of the derived video sequence, the latter changes its characteristics during playback, i.e. fragments of a frame with different coordinates and other characteristics are recorded in the derived video sequence at different instants of time, while they comprise a single video sequence.

The static or dynamic organization of the derived video sequence can be linear (Fig. 18), while the derived video sequence is composed of fragments of frames arranged in series. On Fig presents a discrete organization of the derived video sequence, which can be both static and dynamic, depending on the method of recording its characteristics in relation to other video sequences. The derived video sequence consists of the 1st, 3rd and 5th fragments of the original video. In the discrete organization variant (Fig. 20), the derived video sequence contains two or more fragments from the same time interval. On Fig, 19 and 20 it is seen that there is a decrease in the frame size of the derived video sequence and the process of its receipt.

Processing of video material for writing to disk is carried out in a similar way.

It is possible to fragment immediately before the broadcast with the transfer of all necessary data to the user for immediate reproduction. When using this method, a multi-threaded fragmentation process occurs with the formation of a multi-threaded synchronous broadcast derivative derivation of video sequences and with the parallel transfer of control information. This method can be used to prevent copying of live broadcasts or better protection of video material. The disadvantages of this implementation include the resource intensity of this process.

When playing back, fragments are restored using the control information — they produce inverse transformations of the applied reversible effects: reverse rotation, reflection return, etc. Further, in accordance with the control information, the fragments are arranged in coordinates and layers and the fragments are synchronously reproduced, forming video information identical in perception to the original one. In other words, the necessary sequence of arrangement of fragments in a 3-dimensional video matrix-mosaic is carried out to obtain a two-dimensional video projection that is identical in perception to the original image.

One of the options for assembling fragmented video material can be illustrated in Fig.7.

In this case, none of the fragments saved the dimensions of the original video frame, but the sizes of the original video frame are present in the control information, i.e. In this example, the base layer is missing. In this example, the sequence of arrangement of the layers does not matter, since the fragments do not overlap each other. All fragments are arranged according to the coordinates relative to the size of the original video frame, forming, when combined, an image identical in size to the original.

Fragments can be transmitted in several video streams or in one stream containing all the necessary information.

The audio track can be on one of the reproduced video sequences, it can be separately, partially in different video sequences, or can be in several fragments at the same time, which gives additional protection against copying, as during desynchronization of reproduced fragments, there will be audio interference caused by simultaneous playback of several unsynchronized audio tracks.

As protection against interception, the control information necessary for high-quality viewing containing the data necessary for high-quality viewing, such as coordinates, sizes, number of fragments and frame location in the video sequence, can be additionally encrypted. Encryption is carried out, for example, using symmetric encryption with a key of 64-128 bits. For viewing online, it is more advisable to use symmetric RC4 stream ciphers (variable-length key encryption algorithm), SEAL (Software Efficient Algorithm, software-efficient algorithm), WAKE (World Auto Key Encryption algorithm, world-wide automatic key encryption algorithm).

For drives, it is more appropriate to use two-way asymmetric encryption using asymmetric RSA (Rivest-Shamir-Adleman) or DSA (Digital Signature Algorithm) algorithms.

When reproducing from derived from fragmentation of video sequences, video streams are formed that arrange and synchronize the playback in accordance with the control information.

Synchronous playback (showing the dependence on the location of the layers) of the video material is well demonstrated by the example of Figures 9, 9a and 9b.

To illustrate the playback process, consider the above figures. After reading the three derived video sequences, they must be arranged in the correct order, since the layers will overlap each other. In this case, the following will be the correct arrangement of layers. The first one is the layer depicted in FIG. 9 without changes, since it retained the dimensions of the original video frame. It is basic in recovery. The fragment shown in Fig. 9b is next placed over the image in accordance with the coordinates indicating its location. On top of the fragments shown in Fig. 9 and Fig. 9b, the fragment of Fig. 9a is superimposed, also according to the location coordinates. Layers should be arranged in this order, since in any other case the original image will not be obtained. When playing back video material fragmented as in FIG. 5, FIG. 6, the cut-out fragment is placed on top of the base.

Fragment synchronization is performed in various ways. For example, in Windows, using DirectX, DirectShow, all files are read, then they are converted into streams, and startup is performed. After starting, there is a slight playback desynchronization. To compensate for it, the difference in the location of the reproduced frame for each fragment is tracked. Then, in each stream, compensation for the location of the reproduced frame is set. The compensation shift is produced by the number of frames different from the fragment taken as the base. After that, the video image acquires parameters identical to the original video.

Those skilled in the art will appreciate how the invention can be practiced without a more detailed description of specific details. In many details of the present invention, well-known methods, procedures, components, and circuits are not described in detail, so as not to complicate aspects of the present invention without the need.

The present invention can be used to prevent illegal copying of any type of video information from any source of video information (for example, a broadcast video signal or a video signal distributed via cable, etc.) with a digital format. The solution can be used to prevent illegal copying of disks.

The advantages of this protection method are:

- A fundamentally new approach to protecting video information;

- the difficulty of restoring the original video even with a successful interception of the stream with control information;

- the possibility of sharing with existing methods of protection;

- the ability to protect video materials, even when a master disk is stolen at the factory - because before starting the server with the control information necessary for viewing, it will be impossible to restore the video material.

The foregoing method reliably protects video materials from copying and unauthorized reproduction.

The above description does not limit the present invention to the examples considered, which are merely illustrations. The scope of the present invention is determined only by the attached claims taking into account possible equivalents.

Information sources

1. Patent US 8171118. IPC G06F 15/16. Application streaming over HTTP / John Sheehan, Naveed Ahmad, Kristofer Reierson; Microsoft Corporation, Redmond, WA (US). - 12/183956; Claim 07/31/2008; Publ. 05/01/2012.

2. Patent No. 2427898 of the Russian Federation, IPC G06F 17/00 (2006.01); H04L 9/00 (2006.01). Protection of digital multimedia with various types of content / KLEMETS Anders E. (US), ALKOU James M. (US), BHATT Sanjay (US), OLIVERA Eduardo P. (US), PAKA Anand (US); MICROSOFT CORPORATION (US). - Application: 2008104858/08; Claim 08/10/2006; Publ. 08/27/2011.

3. Application WO 9960791, G06T 1/00; H04N 7/08; H04N 7/081; H04N 7/26; H04N 7/30 METHOD AND APPARATUS FOR WATERMARK DETECTION FOR SPECIFIC SCALES AND ARBITRARY SHIFTS / COLLIER DAVID C; MACROVISION CORP [US]. - WO 1999US03338; Claim 02.17.1999

4. Application MX 2012011078 (A), IPC H04N 7/167. Video watermarking method resistant to temporal desynchronization attacks / AVALOS PEDRO AARON HERNANDEZ [MX]; URIBE CLAUDIA FEREGRINO; PARRA RENE ARMANDO CUMPLIDO; HERNANDEZ JOSE JUAN GARCIA; INST NAC DE ASTROFISICA OPTICA Y ELECTRONICA [MX]. - MX20120011078; Claim 09/25/2012

5. Patent No. 2251821 of the Russian Federation, IPC H04N 7/26, G11B 20/10. The method of introducing watermarks in images that are not dependent on zooming / RYAN John O. (US); MACROVISION CORPORATION (US). - Application: 2002105916/09; Claim 08/01/2000; Publ. 05/10/2005.

6. Patent No. 2394288 of the Russian Federation, IPC G11B 20/10 (2006.01). Information providing system, reproducing device, reproducing method, information providing device, information providing method / CATO Motoki (JP), HAMADA Toshiya (JP), KOBAYASI Yoshiyuki (JP); SONY CORPORATION (JP). - Application 2006117983/28; Claim 09/30/2004; Publ. 07/10/2010.

7. Patent No. 2130237 of the Russian Federation, IPC H04N 7/16, H04N 7/167. An Advanced Way to Protect Against Video Copying by Introducing Horizontal and Vertical Image Distortion / Peter J. Wanfor (US), Alistair J. Knox (GB), Jeremy J. Corcoran (GB), John O. Rein (US), Ronald Kwan (US); MACROVISION CORPORATION (US). - Application: 95122715/09, 05/09/1994; Claim 08/01/2000; Publ. 05/10/1999.

Claims (15)

1. A method of protecting video materials from copying and unauthorized reproduction, in which the video material is preliminarily prepared, for this, the frames making up the original video sequence are divided into fragments, thereby processing the entire original video sequence, with the formation of control information for reproducing the video material, after fragmentation and processing of the fragments receive derived footage made up of fragments of frames, while the organization of the derived footage is performed static or dynam video, which at the same time can be linear or discrete, when reproducing using control information from synchronously reproduced derivatives of video sequences accompanied by an audio track, the video information is restored to the same perception as the original. 2. The method according to claim 1, in which the fragments can have a different shape, size, or contain parts of adjacent fragments or extraneous information. 3. The method according to claim 1, in which the fragments are subjected to additional processing using reversible effects, such as rotation, reflection and other similar changes. 4. The method according to claim 1, in which the fragments are subjected to additional processing using irreversible effects, such as strong blurring, partial reduction in quality, or replacement with a cover fragment, for example, an advertising banner, commercial or other image. 5. The method according to claim 1, in which the control information for reproducing the video material contains the coordinates, shapes, sizes, number, identifiers of fragments, the location of the frame in the overall video sequence, location, transparency and other properties of the fragments and the original video material needed to restore the image to the original video images, the generated control information contains information about the modifications and distortions produced with the obtained fragments, reversible and irreversible, as well as the order the level and transparency of layers for sequential overlapping of fragments when restoring a fragmented frame to an identical perception with the original. 6. The method according to claim 1, in which the derived video sequences are recorded in separate files, or in a common file container, or in another way that saves the information in a form suitable for further use in the process of restoring the original video image. 7. The method according to claim 1, in which the fragmentation is carried out immediately before translation by individual fragmentation for each viewing with the transfer of all necessary data for immediate reproduction. 8. The method according to claim 1, in which the organization of the derived footage is performed static, in which during the fragmentation and playback of the coordinates, sizes and other characteristics of the derived footage do not change with respect to other footages. 9. The method according to claim 1, in which the organization of the derived footage is dynamic, while the characteristics of the derived footage are changed during fragmentation and playback in relation to other footages. 10. The method according to claim 1, in which the organization of the derived video sequence is linear, while the derived video sequence is formed from fragments of frames arranged in series. 11. The method according to claim 1, in which the organization of the derived footage is performed discrete, while the derived footage is formed from fragments of frames located at different time intervals of the source footage. 12. The method according to claim 1, in which when playing back inverse transformations of applied reversible effects, such as reverse rotation, return of reflection or other similar changes, are performed, then, in accordance with the control information, the fragments are arranged in coordinates and layers for simultaneous reproduction of fragments and obtaining video, identical in perception to the original. 13. The method according to claim 1, in which the derived video sequences are transmitted in several video streams or in a single stream containing all the necessary information. 14. The method according to claim 1, in which the audio track is placed on one or more derivative video sequences, or in parts in different video sequences, or in several derivative fragments, or separately. 15. The method according to claim 1, in which, to protect against interception, control information for reproducing video material is further encrypted using symmetric or asymmetric encryption algorithms.

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