CN113014609B - Multimedia file processing and tracing method, device, equipment and medium - Google Patents
Multimedia file processing and tracing method, device, equipment and medium Download PDFInfo
- Publication number
- CN113014609B CN113014609B CN201911315698.5A CN201911315698A CN113014609B CN 113014609 B CN113014609 B CN 113014609B CN 201911315698 A CN201911315698 A CN 201911315698A CN 113014609 B CN113014609 B CN 113014609B
- Authority
- CN
- China
- Prior art keywords
- picture
- file
- multimedia
- compressed file
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/146—Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
Abstract
The embodiment of the invention discloses a method, a device, equipment and a medium for processing and tracing a multimedia file. The method comprises the following steps: acquiring a multimedia file downloading request of a user; the downloading request carries a target multimedia file identifier and a user identifier; acquiring a target multimedia compressed file according to the target multimedia file identifier; generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format; and adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to the user. The embodiment of the invention can realize the tracing purpose after the leakage of the multimedia file, thereby providing conditions for determining the leaked user.
Description
Technical Field
The embodiment of the invention relates to the technical field of monitoring, in particular to a method, a device, equipment and a medium for processing and tracing a multimedia file.
Background
The security and privacy of multimedia files shot by a monitoring camera are more and more important for protecting the multimedia files. However, as information technology has developed, the leakage channels of multimedia files are also diversified. For example, the downloaded multimedia file is stolen, captured or shared to other users by users with downloading authority, resulting in leakage and the like.
Aiming at the problem that a multimedia file is leaked due to the fact that a user with downloading authority shares the multimedia file with other users, a watermark with a downloading user identification (identity information) is added to a picture of the multimedia file, so that the leaked user can be traced according to the watermark on the picture after the multimedia file is leaked.
However, the above-mentioned adding a watermark with downloaded user identity information to a picture has the following problems: firstly, the watermark can shield the content on the picture, and the normal watching of a downloading user is influenced; secondly, when the downloading user shares the multimedia file with other users, the multimedia file added with the watermark can be subjected to mosaic, doodle, character adding or sticker adding and the like, and identity information is hidden, so that the leaked user cannot be traced after the multimedia file is leaked.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a medium for processing and tracing a multimedia file, which can achieve the purpose of tracing the leaked multimedia file, thereby providing conditions for determining a leaked user.
In a first aspect, an embodiment of the present invention provides a method for processing a multimedia file, which is applied to a server, and the method includes:
acquiring a multimedia file downloading request of a user; the downloading request carries a target multimedia file identifier and a user identifier;
acquiring a target multimedia compressed file according to the target multimedia file identifier;
generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format;
and adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to a user.
In a second aspect, an embodiment of the present invention provides a method for tracing a multimedia file, where the method includes:
acquiring a leaked multimedia compressed file, and converting the leaked multimedia compressed file into a file with a target format to obtain a leaked picture;
obtaining an original multimedia compressed file associated with the leaked multimedia compressed file, and converting the original multimedia compressed file into a file in the target format to obtain an original picture;
comparing the leakage picture with the original picture to obtain a user picture;
and determining leaked user information of the leaked multimedia file according to the user picture for tracing.
In a third aspect, an embodiment of the present invention further provides a device for processing a multimedia file, where the device is configured in a server, and the device includes:
the first acquisition module is used for acquiring a multimedia file downloading request of a user; the downloading request carries a target multimedia file identifier and a user identifier;
the second acquisition module is used for acquiring a target multimedia compressed file according to the target multimedia file identifier;
the generating module is used for generating a user identification picture in a target format according to the user identification and hiding the user identification picture in the target format;
and the adding module is used for adding the user identification picture after the hiding processing into the target multimedia compressed file to obtain a new target multimedia compressed file and sending the new target multimedia compressed file to a user.
In a fourth aspect, an embodiment of the present invention further provides a device for tracing back a multimedia file, where the device includes:
the first conversion module is used for acquiring a leaked multimedia compressed file and converting the leaked multimedia compressed file into a file in a target format to obtain a leaked picture;
the second conversion module is used for acquiring an original multimedia compressed file associated with the leaked multimedia compressed file and converting the original multimedia compressed file into a file with the target format to obtain an original picture;
the comparison module is used for comparing the leakage picture with the original picture to obtain a user picture;
and the determining module is used for determining leaked user information of the leaked multimedia file according to the user picture and is used for tracing.
In a fifth aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for processing a multimedia file according to the first aspect of the embodiments of the present invention.
In a sixth aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for tracing a multimedia file according to the second aspect of the embodiment of the present invention.
In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for processing a multimedia file described in the embodiment of the first aspect.
In an eighth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for tracing back a multimedia file according to the second aspect in the embodiment of the present invention.
The technical scheme disclosed by the embodiment of the invention has the following beneficial effects:
when a multimedia file downloading request of a user is obtained, a target multimedia compression file is obtained according to a target multimedia file identifier carried in the multimedia file downloading request, a user identifier picture in a target format is generated according to the user identifier carried in the multimedia file downloading request so as to hide the user identifier picture in the target format, and then the hidden user identifier picture is added into the target multimedia compression file so as to obtain a new target multimedia compression file, so that the new target multimedia compression file is sent to the user. Therefore, the identity information of the downloading user is added to the multimedia file in a hidden mode in the downloading process of the multimedia file, so that the user identity information cannot be displayed when the user watches the downloaded multimedia file, the experience is better, the user identity information carried in the multimedia file cannot be eliminated when the user reveals the multimedia file, conditions are provided for the subsequent leakage tracing of the multimedia file, the purpose of the leakage tracing of the multimedia file is achieved, and the leakage user of the multimedia file is convenient to trace.
Drawings
Fig. 1 is a schematic flowchart of a method for processing a multimedia file according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of adding a user identification picture after hiding processing to a target video compression file according to an embodiment of the present invention;
fig. 3 (a) -3 (c) are schematic diagrams of a process for fusing a key frame picture in YUV format with a concealed YUV format user identification picture in a target video file according to an embodiment of the present invention;
fig. 4 is a flowchart of adding a user identification picture after hiding processing to a target picture compression file according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for tracing back a multimedia file according to an embodiment of the present invention;
fig. 6 is a schematic flowchart of a process of converting a leakage video compression file into a target format to obtain a leakage picture according to an embodiment of the present invention;
fig. 7 is a schematic flowchart of converting an original video compression file into a target format to obtain an original picture according to an embodiment of the present invention;
fig. 8 (a) -fig. 8 (c) are schematic diagrams illustrating a process of obtaining a user identification picture according to an embodiment of the present invention;
fig. 9 (a) -fig. 9 (c) are schematic diagrams illustrating another process for obtaining a user identification picture according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a multimedia file processing apparatus according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a tracing apparatus for multimedia files according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and do not delimit the embodiments. It should be further noted that, for convenience of description, only some structures related to the embodiments of the present invention are shown in the drawings, not all of them.
Fig. 1 is a flowchart illustrating a method for processing a multimedia file according to an embodiment of the present invention. The processing method of the multimedia file provided by the embodiment of the invention can be executed by a processing device of the multimedia file, the device can be realized by software and/or hardware, and can be integrated in electronic equipment, and the electronic equipment can be any equipment with a data processing function. The electronic device in the embodiment of the invention is preferably a server. The method comprises the following steps:
s101, acquiring a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier.
The multimedia file is a video file or a picture file. That is to say, the multimedia file downloading request in the embodiment of the present invention is a video file downloading request or a picture file downloading request.
In this embodiment, the target multimedia file identifier refers to information that uniquely identifies the target multimedia file, such as a multimedia file name or a multimedia file serial number.
The user identifier is information for uniquely determining a user identity, for example, a user account, a user name, a user terminal IP address used by the user, a user terminal Media Access Control (MAC) address, and the like. The user terminal may be, but is not limited to: smart phones, personal digital assistants, tablet computers, personal computers, and the like.
Optionally, when the user terminal monitors that the user triggers a multimedia file downloading request, the multimedia file downloading request may be sent to the server, so that the server obtains the target multimedia file according to the multimedia file downloading request. When the user terminal sends the multimedia file downloading request of the user to the server, the multimedia file downloading request can be realized in a wired communication mode or a wireless communication mode. Wherein, the wireless communication mode includes: zigbee, wiFi and 3G networks, 4G networks and 5G networks, etc.
And S102, acquiring the target multimedia compressed file according to the target multimedia file identifier.
The compression format of the target multimedia compression file can be one of all compression formats. For example, if the target multimedia compressed file is a target video compressed file, the compression format may be one of MPEG-1, MPEG-2, MPEG-4, H.263, H.264, etc.
For example, after acquiring a multimedia file download request of a user, the server may analyze the multimedia file download request to acquire a target multimedia file identifier and a user identifier carried in the multimedia file download request. And then, acquiring a corresponding target multimedia compressed file from the multimedia file database according to the target multimedia file identifier.
S103, generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format.
Wherein, the target format is YUV format or RGB format.
Because the user identifier carried in the acquired multimedia file downloading request is a character string, in order to add the user identifier to the target multimedia compressed file, the embodiment of the invention can generate the user identifier picture in the target format according to the acquired user identifier.
For example, if the target format is YUV format, a user identification picture in YUV format is generated; for another example, if the target format is an RGB format, a user identification picture in the RGB format is generated.
Further, in order to prevent the user identification picture added to the target multimedia compressed file from being seen by naked eyes of a user, the user identification picture in the target format can be hidden after the user identification picture in the target format is generated.
In specific implementation, the user identification picture in the target format is processed into a picture invisible to the naked eye by performing binarization processing on the user identification picture in the target format or processing by adopting other hidden algorithms, such as an LSB (least significant bit) algorithm and the like, so that the problem that the user viewing experience is poor due to the addition of the user identification visible to the naked eye in the existing scheme is effectively avoided. The values of the binarization processing are preferably 0 and 3.
It should be noted that in the embodiment of the present invention, the execution sequence of S102 and S103 may be that S102 is executed first, and then S103 is executed; or, S103 may be executed first, and then S102 may be executed; alternatively, S102 and S103 may be executed simultaneously, which is not limited in particular here.
And S104, adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to a user.
In the embodiment of the present invention, the target multimedia file is a target video file or a target picture file. Therefore, the embodiment of the present invention adds the user identification picture after the hiding process to the target multimedia compressed file, and specifically includes: and adding the user identification picture after the hiding processing to the target video compression file, or adding the user identification picture after the hiding processing to the target picture compression file.
First, with reference to fig. 2, a description is given of adding a user identification picture after concealment processing to a target video compression file to obtain a new target video compression file.
S201, extracting a key frame compressed file from a target video compressed file, and converting the key frame compressed file into a key frame picture in the target format.
The key frame is an intra-coded picture frame (I-frame), and the number of the key frames is at least one.
It should be noted that, since the key frame in the video file is a complete picture, the forward predictive coded picture frame (P frame) and the bidirectional predictive coded picture frame (B frame) are the change information recorded relative to the key frame. I.e., P-frames and B-frames need to rely on I-frames to decode and reconstruct the complete P-frame pictures and B-frame pictures. Therefore, the embodiment of the invention can realize the purpose of adding the user identifier to the whole video file by adding the user identifier to each key frame of the target video file.
Illustratively, all key frame compressed files are converted into key frame pictures in a target format by extracting all key frame compressed files from a target video compressed file. If the target format is YUV format, converting all key frame compressed files into key frame pictures in YUV format; and if the target format is the RGB format, converting all the key frame compressed files into key frame pictures in the RGB format.
And S202, fusing the user identification picture after the hiding process and the key frame picture to obtain a new key frame picture.
Illustratively, a new key frame picture with a user identifier is obtained by fusing the user identifier picture after the concealment process and the key frame picture. And if the number of the key frame pictures is multiple, fusing the user identification picture with each key frame picture to obtain a plurality of new key frame pictures with user identifications.
And during specific implementation, fusing the channel values of the pixel points in the user identification picture and the key frame picture after the hiding processing to obtain a new key frame picture.
And S203, compressing the new key frame picture.
And S204, replacing the key frame compressed file in the target video compressed file by adopting the compression result of the new key frame picture to obtain a new target video compressed file.
And compressing the new key frame picture according to the compression format of the target video compression file so as to ensure that the compression format of the new key frame picture is consistent with that of the target video compression file. And then, replacing the key frame compressed file in the target video compressed file with the compression result of the new key frame picture to obtain a new target video compressed file, and sending the new target video compressed file to the user.
For example, fig. 3 (a) is a flowchart illustrating the method for converting a key frame compressed file in a target video compressed file into key frame pictures in YUV format according to the embodiment of the present invention, wherein each cell represents a pixel point, and the pixel point is labeled 31. Fig. 3 (b) is a YUV format user identification picture after the hiding processing in the embodiment of the present invention, where each cell represents a pixel, and the pixel is labeled as 32. Fig. 3 (c) is a new key frame picture obtained by fusing a YUV format user identification picture after concealment processing and a YUV format key frame picture in the embodiment of the present invention, where each cell represents a pixel, and the pixel is marked as 33.
It should be noted that, in the actual use process, the YUV format user identification picture after the hiding processing shown in fig. 3 (b) is invisible to the naked eye of the user.
And secondly, with reference to fig. 4, adding the user identification picture after the hiding process to the target picture compressed file to obtain a new target picture compressed file for description.
S401, converting the target picture compressed file into a target picture in the target format.
The target picture compression file comprises at least one picture compression file.
In the embodiment of the invention, if the target format is YUV format, the target picture compressed file is converted into a target picture in YUV format; and if the target format is the RGB format, converting the target picture compression file into the target picture in the RGB format.
S402, fusing the user identification picture after the hiding process and the target picture to obtain a new picture file.
And S403, compressing the new picture file.
S404, replacing the target picture compressed file by adopting the compression result of the new picture file to obtain a new target picture compressed file.
It should be noted that, in the embodiment of the present invention, the implementation process of fusing the user identification picture after the hiding processing and the target picture to obtain a new picture file, compressing the new picture file, and replacing the target picture compressed file with the compression result of the new picture file to obtain a new target picture compressed file is similar to the processing principle of the key frame compressed file in the target video compressed file, which is specifically referred to the processing process of the key frame compressed file, and is not described herein in too much detail.
Further, in order to reduce the data amount of adding the user identifier to the target multimedia compressed file, in the embodiment of the present invention, at least one channel pixel value in the user identifier picture may be cleared to obtain the user identifier picture including at least one channel pixel value, and the user identifier picture including at least one channel pixel value is hidden. And then adding the user identification picture which comprises at least one channel pixel value and is subjected to hiding processing into the target multimedia compressed file to obtain a new target multimedia compressed file.
If the target format of the user identification picture is the YUV format, removing at least one channel pixel value in the YUV format picture to obtain the user identification picture comprising at least one channel pixel value, including the following conditions:
first case
And removing the U-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the Y-channel pixel value and the V-channel pixel value.
Second case
And clearing the V-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the Y-channel pixel value and the U-channel pixel value.
Third case
And clearing the Y-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the U-channel pixel value and the V-channel pixel value.
Fourth case
And removing the U-channel pixel value and the V-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the Y-channel pixel value.
Fifth case
And clearing the Y-channel pixel value and the V-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the U-channel pixel value.
In the sixth case
And clearing the Y-channel pixel value and the U-channel pixel value in the YUV-format user identification picture to obtain the user identification picture comprising the V-channel pixel value.
It should be noted that, in the embodiment of the present invention, any one of the above six manners may be adopted to process the user identification picture so as to reduce the data amount of the user identification picture.
In another implementation manner of the present invention, if the target format of the user identification picture is an RGB format, at least one channel pixel value in the user identification picture in the RGB format is removed to obtain the user identification picture including at least one channel pixel value, specifically, at least one of an R channel pixel value, a G channel pixel value, and a B channel pixel value in the user identification picture is removed, and the specific implementation manner may adopt a manner of processing the user identification picture in the YUV format as described above, which is not described herein in detail.
According to the method for processing the multimedia file, when a multimedia file downloading request of a user is obtained, a target multimedia compressed file is obtained according to a target multimedia file identifier carried in the multimedia file downloading request, a user identifier picture in a target format is generated according to the user identifier carried in the multimedia file downloading request so as to hide the user identifier picture in the target format, and then the hidden user identifier picture is added into the target multimedia compressed file so as to obtain a new target multimedia compressed file, and the new target multimedia compressed file is sent to the user. Therefore, the identity information of the downloading user is added to the multimedia file in a hidden mode in the downloading process of the multimedia file, so that the user identity information cannot be displayed when the user watches the downloaded multimedia file, the experience is better, the user identity information carried in the multimedia file cannot be eliminated when the user reveals the multimedia file, conditions are provided for the subsequent leakage tracing of the multimedia file, the purpose of the leakage tracing of the multimedia file is achieved, and the leakage user of the multimedia file is convenient to trace.
As can be seen from the above description, in the embodiment of the present invention, the hidden user identification picture is added to the target multimedia compressed file to obtain a new target multimedia compressed file, so as to send the new multimedia compressed file to the user, thereby providing a condition for tracing the user who leaks the multimedia file after the subsequent target multimedia file is leaked.
Fig. 5 is a flowchart illustrating a method for tracing back a multimedia file according to an embodiment of the present invention. The method for tracing the multimedia file provided by the embodiment of the invention can be executed by a device for tracing the multimedia file, the device can be realized by software and/or hardware, and can be integrated in electronic equipment, and the electronic equipment can be any equipment with a data processing function. Such as a server or other terminal device having an original video file. The method comprises the following steps:
as shown in fig. 5, the method for tracing a multimedia file specifically includes the following steps:
s501, obtaining a leaked multimedia compressed file, and converting the leaked multimedia compressed file into a file with a target format to obtain a leaked picture.
The leaked multimedia compression file is a leaked video compression file or a leaked picture compression file.
In the embodiment of the invention, the target format is YUV format or RGB format.
Illustratively, when a worker or a multimedia file owner finds that a private multimedia file is played in a public scene, a client with a shooting function can be used for shooting a leaked multimedia file, and then the leaked multimedia file is compressed and packaged and uploaded to a server or a terminal device, so that the server or the terminal device can trace the leaked multimedia file. When the leaked multimedia files are compressed, packaged and uploaded to the server, the leaked multimedia file identifications can be uploaded to the server together, and a foundation is laid for a subsequent server to obtain original multimedia compressed files related to the leaked multimedia compressed files.
And after the server or the terminal equipment receives the leaked multimedia compressed file uploaded by the client, decoding the leaked multimedia compressed file to convert the leaked multimedia compressed file into a target format to obtain a leaked picture.
In specific implementation, the leaked multimedia compression file is a leaked video compression file or a leaked picture compression file. With reference to fig. 6, a description is given below of an embodiment of the present invention for converting a leaked multimedia compressed file into a leaked video compressed file into a target format to obtain a leaked picture.
S601, extracting the leakage key frame compressed file from the leakage video compressed file.
Wherein the number of the leakage key frame compressed files is at least one.
S602, converting the leakage key frame compressed file into the leakage key frame picture in the target format.
In the embodiment of the invention, the target format is YUV format or RGB format. For this, the converting the leakage key frame compressed file into the leakage key frame picture in the target format includes the following steps:
if the target format is YUV format, converting the leakage key frame compressed file into a leakage key frame picture in YUV format;
and if the target format is the RGB format, converting the leakage key frame compressed file into a leakage key frame picture in the RGB format.
Further, when the leaked multimedia compressed file is the leaked picture compressed file, the leaked picture compressed file can be converted into the leaked picture in the target format according to the target format when the leaked picture compressed file is converted into the target format to obtain the leaked picture.
Specifically, if the target format is YUV format, the leakage picture compression file is converted into a leakage picture in YUV format; and if the target format is the RGB format, converting the leakage picture compression file into the leakage picture in the RGB format.
S502, obtaining an original multimedia compressed file associated with the leaked multimedia compressed file, and converting the original multimedia compressed file into a file with the target format to obtain an original picture.
Optionally, the original multimedia compressed file associated with the leaked multimedia compressed file may be obtained from a database according to the identifier of the leaked multimedia file uploaded by a worker or a multimedia file owner.
And then, the obtained original multimedia compressed file is decoded to convert the original multimedia compressed file into a target format to obtain an original picture.
In the specific implementation, the original multimedia compressed file corresponds to the leaked multimedia compressed file one to one, so that the obtained original multimedia compressed file is the original video compressed file or the original picture compressed file on the premise that the leaked multimedia compressed file is the leaked video compressed file or the leaked picture compressed file.
The following describes an original video compression file converted into a target format to obtain an original picture according to an embodiment of the present invention with reference to fig. 7.
S701, extracting an original key frame compressed file from the original video compressed file.
Wherein, the number of the original key frame compressed files is at least one.
S702, converting the original key frame compressed file into the original key frame picture in the target format.
In the embodiment of the invention, the target format is YUV format or RGB format.
For this purpose, the original key frame compressed file is converted into an original key frame picture in a target format, and the method comprises the following steps:
if the target format is YUV format, converting the original key frame compressed file into an original key frame picture in YUV format;
and if the target format is the RGB format, converting the original key frame compressed file into an original key frame picture in the RGB format.
Furthermore, when the original multimedia compressed file is converted into the original image compressed file according to the embodiment of the present invention, and the original image compressed file is converted into the target format to obtain the original image, the original image compressed file can be converted into the original image in the target format according to the target format.
Specifically, if the target format is YUV format, the original picture compression file is converted into an original picture in YUV format; and if the target format is the RGB format, converting the original image compression file into an original image in the RGB format.
S503, comparing the leakage picture with the original picture to obtain a user identification picture.
S504, according to the user identification picture, determining leaked user information of the leaked multimedia file for tracing.
Optionally, the channel pixel value in the leaked picture is subtracted from the channel pixel point in the original picture, so as to obtain the user identification picture according to the difference value. Then, according to the user identification picture, the leaked user information (user information of the download user) of the leaked multimedia file can be determined.
The method includes the steps of determining leaked user information of a leaked multimedia file according to a user identification picture, specifically based on a reverse pushing process of generating a user identification picture in a target format according to a user identification in the above embodiment, and redundant description is not repeated here.
Further, since the leaked multimedia compressed file and the original multimedia compressed file may be lossy compressed, the leaked multimedia compressed file and the original multimedia file are converted into a target format, and noise may exist in the obtained leaked picture and the original picture. Therefore, according to the leaked picture and the original picture, the obtained user identification picture is different from the user identification picture added in the multimedia file processing stage, so that the leaked user who leaks the video file cannot be accurately determined.
To this end, the embodiment of the present invention may perform binarization processing on the difference value, and set the difference value that is not zero to a value having a large difference from the difference value being zero (e.g., a maximum value of 255) to enhance the difference between the difference value that is not zero and the difference value being zero, thereby providing an advantage for determining the leaking user.
It should be noted that, in the embodiment of the present invention, the area where the pixel point with the zero difference is located is the background area, and the area where the pixel point with the non-zero difference is located is the target area. That is to say, the pixel points in the target area are enhanced, so that the leakage user can be determined more conveniently.
For example, fig. 8 (a) is a raw key frame picture in YUV format in a raw video file according to an embodiment of the present invention, wherein each cell represents a pixel point, and the pixel point is labeled 81. Fig. 8 (b) is a YUV-formatted leakage keyframe picture corresponding to the YUV-formatted keyframe picture of the original video file in the leakage video file in the embodiment of the present invention, where each cell represents a pixel, and the pixel is labeled as 82. Fig. 8 (c) is a YUV format user identification picture according to an embodiment of the present invention, where each cell represents a pixel, and the pixel is labeled 83.
For another example, fig. 9 (a) shows an original key frame picture in YUV format in an original video file according to an embodiment of the present invention. Fig. 9 (b) is a YUV format leaked key frame picture corresponding to the YUV format key frame picture of the original video file in the leaked video file according to the embodiment of the present invention. Fig. 9 (c) is a YUV format user identification picture in an embodiment of the present invention.
According to the method for tracing the multimedia file, the leaked multimedia compressed file is converted into the target format to obtain the leaked picture, the original multimedia compressed file related to the leaked multimedia compressed file is obtained, the original multimedia compressed file is converted into the target format to obtain the original picture, then the leaked picture and the original picture are compared to obtain the user identification picture, and the leaked user information of the leaked multimedia file is determined according to the user identification picture. Therefore, the leaked user information can be determined based on the leaked picture and the original picture, the tracing purpose of the leaked multimedia file is achieved, and conditions are provided for determining the leaked user.
Fig. 10 is a schematic structural diagram of a multimedia file processing apparatus according to an embodiment of the present invention. As shown in fig. 10, the apparatus for processing a multimedia file according to an embodiment of the present invention includes: a first obtaining module 1010, a second obtaining module 1020, a generating module 1030, and an adding module 1040.
The first obtaining module 1010 is configured to obtain a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier;
a second obtaining module 1020, configured to obtain a target multimedia compressed file according to the target multimedia file identifier;
a generating module 1030, configured to generate a user identifier picture in a target format according to the user identifier, and hide the user identifier picture in the target format;
an adding module 1040, configured to add the hidden user identifier picture to the target multimedia compressed file to obtain a new target multimedia compressed file, and send the new target multimedia compressed file to the user.
As an optional implementation manner of the embodiment of the present invention, the multimedia file is a video file; accordingly, the adding module 1040 is specifically configured to:
extracting a key frame compressed file from a target video compressed file, and converting the key frame compressed file into a key frame picture in the target format;
fusing the user identification picture after the hiding process and the key frame picture to obtain a new key frame picture;
compressing the new key frame picture;
and replacing the key frame compressed file in the target video compressed file by adopting the compression result of the new key frame picture to obtain a new target video compressed file.
As an optional implementation manner of the embodiment of the present invention, the multimedia file is a picture file; accordingly, the adding module 1040 is further configured to:
converting the target picture compressed file into a target picture in the target format;
fusing the user identification picture after the hiding process and the target picture to obtain a new picture file;
compressing the new picture file;
and replacing the target picture compressed file by adopting the compression result of the new picture file to obtain a new target picture compressed file.
As an optional implementation manner of the embodiment of the present invention, the generating module 1030 is further configured to: and carrying out binarization processing on the user identification picture in the target format.
As an optional implementation manner of the embodiment of the present invention, the apparatus further includes: a first processing module.
The first processing module is configured to remove at least one channel pixel value in the user identification picture to obtain a user identification picture including the at least one channel pixel value.
As an optional implementation manner of the embodiment of the present invention, the target format is a YUV format or an RGB format.
It should be noted that the foregoing explanation on the embodiment of the method for processing a multimedia file is also applicable to the apparatus for processing a multimedia file of the embodiment, and the implementation principle is similar, and therefore, no further description is given here.
When a multimedia file downloading request of a user is obtained, a target multimedia compressed file is obtained according to a target multimedia file identifier carried in the multimedia file downloading request, a user identifier picture in a target format is generated according to the user identifier carried in the multimedia file downloading request, the user identifier picture in the target format is subjected to hiding processing, and then the user identifier picture subjected to hiding processing is added into the target multimedia compressed file to obtain a new target multimedia compressed file, so that the new target multimedia compressed file is sent to the user. Therefore, the identity information of the downloading user is added to the multimedia file in a hidden mode in the downloading process of the multimedia file, so that the user identity information cannot be displayed when the user watches the downloaded multimedia file, the experience is better, the user identity information carried in the multimedia file cannot be eliminated when the user reveals the multimedia file, conditions are provided for the subsequent leakage tracing of the multimedia file, the purpose of the leakage tracing of the multimedia file is achieved, and the leakage user of the multimedia file is convenient to trace.
Fig. 11 is a schematic structural diagram of a tracing apparatus for multimedia files according to an embodiment of the present invention. As shown in fig. 11, the apparatus for tracing back multimedia files according to the embodiment of the present invention includes: a first conversion module 1110, a second conversion module 1120, a comparison module 1130, and a determination module 1140;
the first conversion module 1110 is configured to obtain a leaked multimedia compressed file, and convert the leaked multimedia compressed file into a file in a target format to obtain a leaked picture;
a second conversion module 1120, configured to obtain an original multimedia compressed file associated with the leaked multimedia compressed file, and convert the original multimedia compressed file into a file in the target format to obtain an original picture;
a comparison module 1130, configured to compare the leakage picture with the original picture to obtain a user identification picture;
a determining module 1140, configured to determine leaked user information of the leaked multimedia file according to the user identification picture, for performing tracing.
As an optional implementation manner of the embodiment of the present invention, the leaked multimedia compressed file is a leaked video compressed file; correspondingly, the first conversion module 1110 or the second conversion module 1120 are specifically configured to:
extracting a leakage key frame compressed file or an original key frame compressed file from the leakage video compressed file or the original video compressed file;
and converting the leakage key frame compressed file or the original key frame compressed file into the leakage key frame picture or the original key frame picture in the target format.
As an optional implementation manner of the embodiment of the present invention, the leaked multimedia compressed file is a leaked picture compressed file; accordingly, the first conversion module 1110 or the second conversion module 1120 are further configured to:
and converting the leakage picture compressed file or the original picture compressed file into the leakage picture or the original picture in the target format.
It should be noted that the foregoing explanation of the embodiment of the method for tracing back a multimedia file is also applicable to the device for tracing back a multimedia file of the embodiment, and the implementation principle thereof is similar, and is not repeated here.
The tracing device for the multimedia file provided by the embodiment of the invention obtains the leaked multimedia compressed file by converting the leaked multimedia compressed file into the target format to obtain the leaked picture, obtains the original multimedia compressed file associated with the leaked multimedia compressed file by converting the original multimedia compressed file into the target format to obtain the original picture, compares the leaked picture with the original picture to obtain the user identification picture, and determines the leaked user information of the leaked multimedia file according to the user identification picture. Therefore, the leaked user information can be determined based on the leaked picture and the original picture, the tracing purpose of the leaked multimedia file is achieved, and conditions are provided for determining the leaked user.
Referring to fig. 12, the present embodiment provides an electronic apparatus 1200, which includes: one or more processors 1220; the storage 1210 is configured to store one or more programs, and when the one or more programs are executed by the one or more processors 1220, the one or more processors 1220 are enabled to implement the method for processing a multimedia file according to the embodiment of the first aspect of the present invention, including:
acquiring a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier;
acquiring a target multimedia compressed file according to the target multimedia file identifier;
generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format;
and adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to a user.
Of course, it can be understood by those skilled in the art that the processor 1220 can also implement the technical solution of the processing method for multimedia files provided by any embodiment of the present invention.
The electronic device 1200 shown in fig. 12 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 12, the electronic device 1200 is embodied in the form of a general purpose computing device. The components of the electronic device 1200 may include, but are not limited to: one or more processors 1220, a storage device 1210, and a bus 1250 that couples the various system components (including the storage device 1210 and the processors 1220).
Program/utility 1214 having a set (at least one) of program modules 1215 may be stored, for example, in storage 1210, such program modules 1215 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may include implementation of a network environment. Program modules 1215 generally perform the functions and/or methodologies of any of the embodiments described herein.
The electronic device 1200 may also communicate with one or more external devices 1260 (e.g., keyboard, pointing device, display 1270, etc.), one or more devices that enable a user to interact with the electronic device 1200, and/or any devices (e.g., network card, modem, etc.) that enable the electronic device 1200 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 1230. Also, the electronic device 1200 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet) through the network adapter 1240. As shown in FIG. 12, the network adapter 1240 communicates with the other modules of the electronic device 1200 via the bus 1250. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the electronic device 1200, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processor 1220 executes various functional applications and data processing, such as a method for processing a multimedia file according to an embodiment of the first aspect of the present invention, by executing a program stored in the storage device 1210.
An embodiment of the present invention further provides another electronic device, which includes: one or more processors; the storage device is used for storing one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the method for tracing the multimedia file provided by the embodiment of the second aspect of the invention, the method comprises the following steps:
acquiring a leaked multimedia compressed file, and converting the leaked multimedia compressed file into a file with a target format to obtain a leaked picture;
obtaining an original multimedia compressed file associated with the leaked multimedia compressed file, and converting the original multimedia compressed file into a file in the target format to obtain an original picture;
comparing the leakage picture with the original picture to obtain a user identification picture;
and determining the leaked user information of the leaked multimedia file according to the user identification picture for tracing.
Of course, those skilled in the art can understand that the processor can also implement the technical solution of the method for tracing back a multimedia file provided by any embodiment of the present invention. The hardware structure and functions of the electronic device can be explained with reference to the content of the above-mentioned embodiments of the electronic device.
In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium.
The computer-readable storage medium provided by the embodiment of the present invention stores thereon a computer program, and when the program is executed by a processor, the computer-readable storage medium implements the method for processing a multimedia file provided by the embodiment of the first aspect of the embodiment of the present invention, including:
acquiring a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier;
acquiring a target multimedia compressed file according to the target multimedia file identifier;
generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format;
and adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to a user.
Of course, the computer-readable storage medium provided in the embodiments of the present invention has computer-executable instructions that are not limited to the operations of the method described above, and may also perform related operations in the method for processing a multimedia file provided in any embodiment of the first aspect of the present invention.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
An embodiment of the present invention further provides another computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for tracing a multimedia file according to an embodiment of the second aspect of the present invention, where the method includes:
acquiring a leaked multimedia compressed file, and converting the leaked multimedia compressed file into a file with a target format to obtain a leaked picture;
obtaining an original multimedia compressed file associated with the leaked multimedia compressed file, and converting the original multimedia compressed file into a file in the target format to obtain an original picture;
comparing the leakage picture with the original picture to obtain a user identification picture;
and determining the leaked user information of the leaked multimedia file according to the user identification picture for tracing.
Of course, the computer-readable storage medium provided by the embodiment of the present invention has computer-executable instructions that are not limited to the operations of the method described above, and may also perform related operations in the method for tracing back multimedia files provided by any embodiment of the second aspect of the present invention. The description of the storage medium is explained with reference to the above embodiments.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will appreciate that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, adaptations, and substitutions are possible, without departing from the scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention have been described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments may be included without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (13)
1. A method for processing a multimedia file, applied to a server, the method comprising:
acquiring a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier;
acquiring a target multimedia compressed file according to the target multimedia file identifier;
generating a user identification picture in a target format according to the user identification, and hiding the user identification picture in the target format;
adding the hidden user identification picture into the target multimedia compressed file to obtain a new target multimedia compressed file, and sending the new target multimedia compressed file to a user;
the multimedia file is a video file; correspondingly, adding the user identification picture after the hiding processing into the target multimedia compressed file comprises the following steps:
extracting a key frame compressed file from a target video compressed file, and converting the key frame compressed file into a key frame picture in the target format;
fusing the user identification picture after the hiding process and the key frame picture to obtain a new key frame picture;
compressing the new key frame picture;
and replacing the key frame compressed file in the target video compressed file by adopting the compression result of the new key frame picture to obtain a new target video compressed file.
2. The method of claim 1, wherein the multimedia file is a picture file; correspondingly, adding the user identification picture after the hiding processing into the target multimedia compressed file comprises the following steps:
converting the target picture compressed file into a target picture in the target format;
fusing the user identification picture after the hiding process and the target picture to obtain a new picture file;
compressing the new picture file;
and replacing the target picture compressed file by adopting the compression result of the new picture file to obtain a new target picture compressed file.
3. The method according to claim 1, wherein the hiding the user identification picture in the target format specifically includes:
and carrying out binarization processing on the user identification picture in the target format.
4. The method according to claim 1, wherein before hiding the user identification picture in the target format, the method further comprises:
and clearing at least one channel pixel value in the user identification picture to obtain the user identification picture comprising at least one channel pixel value.
5. The method of claim 1, wherein the target format is YUV format or RGB format.
6. A method for tracing back a multimedia file is characterized by comprising the following steps:
acquiring a leaked multimedia compressed file, and converting the leaked multimedia compressed file into a file with a target format to obtain a leaked picture;
obtaining an original multimedia compressed file associated with the leaked multimedia compressed file, and converting the original multimedia compressed file into a file in the target format to obtain an original picture;
comparing the leakage picture with the original picture to obtain a user identification picture;
determining leaked user information of the leaked multimedia file according to the user identification picture for tracing;
the leaked multimedia compressed file is a leaked video compressed file; correspondingly, converting the leaked multimedia compressed file or the original multimedia compressed file into a file in a target format to obtain a leaked picture or an original picture, including:
extracting a leakage key frame compressed file or an original key frame compressed file from the leakage video compressed file or the original video compressed file;
and converting the leakage key frame compressed file or the original key frame compressed file into the leakage key frame picture or the original key frame picture in the target format.
7. The method of claim 6, wherein the compromised multimedia compression file is a compromised picture compression file; correspondingly, converting the leaked multimedia compressed file or the original multimedia compressed file into a file in a target format to obtain a leaked picture or an original picture, including:
and converting the leakage picture compressed file or the original picture compressed file into the leakage picture or the original picture in the target format.
8. A multimedia file processing apparatus, configured to a server, comprising:
the first acquisition module is used for acquiring a multimedia file downloading request of a user; wherein the download request carries a target multimedia file identifier and a user identifier;
the second acquisition module is used for acquiring a target multimedia compressed file according to the target multimedia file identifier;
the generating module is used for generating a user identification picture in a target format according to the user identification and hiding the user identification picture in the target format;
the adding module is used for adding the user identification picture after the hiding processing into the target multimedia compressed file to obtain a new target multimedia compressed file and sending the new target multimedia compressed file to a user;
the multimedia file is a video file; correspondingly, the adding module is specifically configured to:
extracting a key frame compressed file from a target video compressed file, and converting the key frame compressed file into a key frame picture in the target format;
fusing the user identification picture after the hiding process and the key frame picture to obtain a new key frame picture;
compressing the new key frame picture;
and replacing the key frame compressed file in the target video compressed file by adopting the compression result of the new key frame picture to obtain a new target video compressed file.
9. A device for tracing back a multimedia file, comprising:
the first conversion module is used for acquiring a leaked multimedia compressed file and converting the leaked multimedia compressed file into a file in a target format to obtain a leaked picture;
the second conversion module is used for acquiring an original multimedia compressed file associated with the leaked multimedia compressed file and converting the original multimedia compressed file into a file with the target format to obtain an original picture;
the comparison module is used for comparing the leakage picture with the original picture to obtain a user identification picture;
the determining module is used for determining leaked user information of the leaked multimedia files according to the user identification pictures and is used for tracing;
the leaked multimedia compressed file is a leaked video compressed file; correspondingly, the first conversion module or the second conversion module is specifically configured to:
extracting a leakage key frame compressed file or an original key frame compressed file from the leakage video compressed file or the original video compressed file;
and converting the leakage key frame compressed file or the original key frame compressed file into the leakage key frame picture or the original key frame picture in the target format.
10. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of processing a multimedia file as claimed in any one of claims 1-5.
11. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of tracing back a multimedia file as claimed in any one of claims 6-7.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of processing a multimedia file according to any one of claims 1 to 5.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of tracing back a multimedia file according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911315698.5A CN113014609B (en) | 2019-12-19 | 2019-12-19 | Multimedia file processing and tracing method, device, equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911315698.5A CN113014609B (en) | 2019-12-19 | 2019-12-19 | Multimedia file processing and tracing method, device, equipment and medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113014609A CN113014609A (en) | 2021-06-22 |
| CN113014609B true CN113014609B (en) | 2023-03-24 |
Family
ID=76381419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911315698.5A Active CN113014609B (en) | 2019-12-19 | 2019-12-19 | Multimedia file processing and tracing method, device, equipment and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113014609B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113240568A (en) * | 2021-06-11 | 2021-08-10 | 建信金融科技有限责任公司 | Method and device for managing picture resources |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873954A (en) * | 2012-12-13 | 2014-06-18 | 航天信息股份有限公司 | Method of embedding invisible digital watermarking into streaming media, and apparatus and system thereof |
| CN106454367A (en) * | 2016-10-09 | 2017-02-22 | 中国农业大学 | Method and system for identifying multimedia file |
| CN107027055A (en) * | 2017-04-28 | 2017-08-08 | 安徽四创电子股份有限公司 | A kind of video based on digital watermark is traced to the source and encryption method |
| WO2017219066A1 (en) * | 2016-06-22 | 2017-12-28 | Southern Star Corporation Pty Ltd | System and methods for delivery of audio and video content |
| CN107888925A (en) * | 2017-11-03 | 2018-04-06 | 清华大学深圳研究生院 | A kind of embedding grammar and detection method of digital video hiding information |
| CN109145632A (en) * | 2017-06-28 | 2019-01-04 | 北京京东尚科信息技术有限公司 | For generating the method and device of traceable file |
| CN109801205A (en) * | 2018-12-21 | 2019-05-24 | 苏宁易购集团股份有限公司 | A kind of implicit watermark adding method and device traced to the source |
| CN109905765A (en) * | 2017-12-11 | 2019-06-18 | 浙江宇视科技有限公司 | Video retroactive method and device |
-
2019
- 2019-12-19 CN CN201911315698.5A patent/CN113014609B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873954A (en) * | 2012-12-13 | 2014-06-18 | 航天信息股份有限公司 | Method of embedding invisible digital watermarking into streaming media, and apparatus and system thereof |
| WO2017219066A1 (en) * | 2016-06-22 | 2017-12-28 | Southern Star Corporation Pty Ltd | System and methods for delivery of audio and video content |
| CN106454367A (en) * | 2016-10-09 | 2017-02-22 | 中国农业大学 | Method and system for identifying multimedia file |
| CN107027055A (en) * | 2017-04-28 | 2017-08-08 | 安徽四创电子股份有限公司 | A kind of video based on digital watermark is traced to the source and encryption method |
| CN109145632A (en) * | 2017-06-28 | 2019-01-04 | 北京京东尚科信息技术有限公司 | For generating the method and device of traceable file |
| CN107888925A (en) * | 2017-11-03 | 2018-04-06 | 清华大学深圳研究生院 | A kind of embedding grammar and detection method of digital video hiding information |
| CN109905765A (en) * | 2017-12-11 | 2019-06-18 | 浙江宇视科技有限公司 | Video retroactive method and device |
| CN109801205A (en) * | 2018-12-21 | 2019-05-24 | 苏宁易购集团股份有限公司 | A kind of implicit watermark adding method and device traced to the source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113014609A (en) | 2021-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Aly | Data hiding in motion vectors of compressed video based on their associated prediction error | |
| Zhang et al. | Efficient video frame insertion and deletion detection based on inconsistency of correlations between local binary pattern coded frames | |
| US8971691B2 (en) | Signature device and signature method | |
| CN108833938B (en) | Method and apparatus for selecting video covers | |
| US20060107056A1 (en) | Techniques to manage digital media | |
| US8938095B2 (en) | Verification method, verification device, and computer product | |
| TW201820875A (en) | Video decoding apparatus, video encoding method and apparatus, and computer-readable storage medium | |
| US8326061B2 (en) | Fast visual degrading of images | |
| CN112423140A (en) | Video playing method and device, electronic equipment and storage medium | |
| US20080025553A1 (en) | Apparatus, method, and article of manufacture used to encode information into an image and to decode information from a captured image | |
| CN113014609B (en) | Multimedia file processing and tracing method, device, equipment and medium | |
| Li et al. | Extraction of PRNU noise from partly decoded video | |
| US20190230381A1 (en) | Compressing multiple video files using localized camera meta data | |
| CN111836054B (en) | Video anti-piracy method, electronic device and computer readable storage medium | |
| US10536726B2 (en) | Pixel patch collection for prediction in video coding system | |
| US11095901B2 (en) | Object manipulation video conference compression | |
| CN111698533A (en) | Video processing method, device, equipment and storage medium | |
| JP4945541B2 (en) | Digital watermark embedding detection method using degraded host signal | |
| CN115361495B (en) | Real-time shooting information transmission method, management method, device and system | |
| CN104980763B (en) | Video code stream, video coding and decoding method and device | |
| Chittapur et al. | Exposing digital forgery in video by mean frame comparison techniques | |
| CN110958460B (en) | Video storage method and device, electronic equipment and storage medium | |
| CN111325652A (en) | Information embedding method, information extracting method, information embedding device, information extracting device, information embedding equipment and computer readable storage medium | |
| US11809532B2 (en) | Detection of modification of an item of content | |
| Ait Sadi et al. | Content fragile watermarking for H. 264/AVC video authentication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |