CN114302086B - Method, device and system for recording and playing back full-screen ultrahigh-resolution picture of display wall - Google Patents
Method, device and system for recording and playing back full-screen ultrahigh-resolution picture of display wall Download PDFInfo
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Abstract
The invention relates to the technical field of audio and video processing, and discloses a method, a device and a system for recording and playing back full-screen ultrahigh-resolution pictures of a display wall. The recording and playback server stores the acquired picture recording data of the target display wall to the local, creates a player on the desktop when receiving a playback instruction, decodes multiple paths of video code streams and one path of audio code streams in the picture recording data by the player, splices all paths of video frames obtained by decoding into a complete picture according to the respective recording region positions for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall, synchronously plays the decoded audio, and realizes the playback of the picture recording data by outputting the playing data to a processor of the display wall to be played back. The invention can simultaneously meet the video playback requirements of ultra-high definition playback, audio and video synchronization and picture synchronization, and has wide applicability.
Description
Technical Field
The invention relates to the technical field of audio and video processing, in particular to a method, a device and a system for recording and playing back full-screen ultrahigh-resolution pictures of a display wall.
Background
In conference scenes of a monitoring room and a conference room, sometimes, the whole playing picture of a large screen of a display wall is required to be recorded into video, the video is recorded into a storage disk, and the recorded video is played on the large screen of the display wall when the conference record is checked later, namely, the video is played back. The following requirements are satisfied when video playback is performed: (1) Ultra-high definition playback, preferably where the resolution of the recorded video is consistent with the resolution of the entire display wall large screen; (2) Audio and video synchronization, namely, audio and video keep synchronous in the video playback process; (3) And the playback frames are synchronous, and because the large display screen of the display wall is formed by splicing a plurality of display screens, the frame synchronization among a plurality of spliced screens needs to be satisfied.
The traditional method is that a camera is used for shooting the whole large screen picture of the display wall, the picture is stored as video, and then a video file is put on the large screen of the display wall as a signal to be played. The method can meet the requirements of the audio and video synchronization and the playback picture synchronization, but the shooting resolution of the video camera is limited, generally only 4K shooting is supported at most, and the resolution of the large screen of the display wall is far beyond 4K resolution, so that the traditional method cannot meet the requirement of ultra-high definition playback, is limited by factors such as recorded ambient light and the like, and the quality of the video picture shot by the video camera is far different from the quality of the video picture actually displayed by the large screen of the display wall.
Disclosure of Invention
The invention provides a full-screen ultrahigh-resolution picture recording and playback method, device and system for a full-screen ultrahigh-resolution picture of a display wall, which can simultaneously meet the video playback requirements of ultrahigh-definition playback, audio-video synchronization and picture synchronization and solve the technical problem that the traditional picture recording and playback method cannot meet the ultrahigh-definition playback requirements.
The first aspect of the present invention provides a method for recording and playing back full-screen ultrahigh resolution images of a display wall, which is applied to a recording and playing back server, and comprises the following steps:
acquiring and storing picture recording data of a target display wall, wherein the picture recording data comprises multiple paths of video code streams and one path of audio code stream with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and each path of audio code stream carries corresponding second time stamp information;
when a playback instruction is received, a player is created on a desktop, the player decodes the video code stream according to the first timestamp information, and all paths of video frames obtained by decoding are spliced into a complete picture according to the recording area position information to be played, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
and outputting the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
According to one implementation manner of the first aspect of the present invention, the obtaining the image recording data of the target display wall includes:
when a recording instruction is received, requesting the picture recording data from each recording node of the recording node group; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
and receiving video code streams sent by the recording nodes, wherein the video code streams are obtained by video coding the acquired output video of the corresponding output channel by the recording nodes.
According to one implementation manner of the first aspect of the present invention, the obtaining the image recording data of the target display wall further includes:
and receiving an audio code stream sent by a recording node in the recording node group.
According to one implementation manner of the first aspect of the present invention, the processor that outputs the play data output by the player to the display wall to be played back includes:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
The second aspect of the present invention provides a full-screen super-resolution picture recording and playback device for a display wall, comprising:
a memory for storing instructions; the instruction is an instruction capable of realizing the full-screen ultrahigh-resolution picture recording and playback method of the display wall in any mode;
and the processor is used for executing the instructions in the memory.
A third aspect of the present invention provides a computer readable storage medium, where a computer program is stored on the computer readable storage medium, where the computer program when executed by a processor implements a method for recording and playing back a full-screen super-resolution picture of a display wall according to any one of the above modes.
The fourth aspect of the present invention provides a full-screen super-resolution picture recording and playback device for a display wall, comprising:
the device comprises an acquisition module, a storage module and a display module, wherein the acquisition module is used for acquiring and storing picture recording data of a target display wall, the picture recording data comprise multiple paths of video code streams and one path of audio code streams with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the processing module is used for creating a player on a desktop when receiving a playback instruction, decoding the video code stream by the player according to the first timestamp information, and splicing all paths of video frames obtained by decoding into a complete picture according to the recording area position information for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
and the output module is used for outputting the play data output by the player to a processor of a display wall to be played back so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
According to one implementation manner of the fourth aspect of the present invention, the acquiring module includes:
the request unit is used for requesting the picture recording data to each recording node of the recording node group when receiving the recording instruction; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
the first receiving unit is used for receiving video code streams sent by the recording nodes, and the video code streams are obtained by video coding of the acquired output video of the corresponding output channel by the recording nodes.
According to one implementation manner of the fourth aspect of the present invention, the acquiring module further includes:
and the second receiving unit is used for receiving the audio code stream sent by one recording node in the recording node group.
According to one implementation manner of the fourth aspect of the present invention, the output module is specifically configured to:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
The fifth aspect of the present invention provides a full-screen ultrahigh resolution screen recording and playback system for a display wall, comprising a recording node group and a recording and playback server;
the recording node group is used for collecting picture recording data of a target display wall, the picture recording data comprises a plurality of paths of video code streams and one path of audio code stream with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the recording playback server is used for receiving and storing the picture recording data, creating a player on a desktop when receiving a playback instruction, decoding the video code stream by the player according to the first timestamp information, and splicing all paths of video frames obtained by decoding into a complete picture according to the recording area position information for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
the recording and playback server is further configured to output the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
According to one implementation manner of the fifth aspect of the present invention, the recording node group includes recording nodes with the same number as output channels of a processor of the target display wall;
the recording playback server is specifically configured to request the picture recording data from each recording node of the recording node group when receiving a recording instruction;
the recording node is used for collecting output video corresponding to the output channel, carrying out video coding and sending the obtained video code stream to the recording playback server.
According to an implementation manner of the fifth aspect of the present invention, a recording node in the recording node group is further configured to collect the audio code stream and send the audio code stream to the recording playback server.
According to one manner of realisation of the fifth aspect of the invention, the system further comprises a playback node;
if the processor of the display wall to be replayed is a centralized processor, the recording and replaying server is specifically configured to directly output the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, the recording playback server is specifically configured to output the play data to the playback node through the graphics card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
From the above technical scheme, the invention has the following advantages:
the recording and playback server stores the acquired picture recording data of the target display wall to the local, when receiving a playback instruction, a player is created on a desktop, the player decodes multiple paths of video code streams and one path of audio code streams in the picture recording data, all paths of video frames obtained by decoding are spliced into a complete picture according to the respective recording area positions, the complete picture is played according to the picture resolution of the target display wall, and simultaneously, the audio obtained by decoding is synchronously played, and playback of the picture recording data is realized by outputting the playing data to a processor of the display wall to be played back; the invention plays the complete picture according to the picture resolution of the target display wall by the created player, and compared with the traditional video recorder shooting mode, the invention can ensure that the resolution of the played picture is completely the same as that of the original display wall, meets the requirement of ultra-high definition playback, ensures the picture quality precision of the played picture, plays the recorded audio stream by the way of creating the player on the desktop, can solve the problem of synchronicity of transmission display among networks of different code streams, and meets the requirements of audio synchronization and playback picture synchronization; the invention has strong applicability, is suitable for distributed processors and centralized processors, and is compatible with processor systems supporting different factories on the market.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a flowchart of a method for recording and playback of full screen ultra-high resolution pictures of a display wall according to an alternative embodiment of the present invention;
fig. 2 is a block diagram of a full screen super high resolution image recording and playback apparatus for a display wall according to an alternative embodiment of the present invention.
Description of the drawings:
1-an acquisition module; 2-a processing module; 3-output module.
Detailed Description
The embodiment of the invention provides a full-screen ultrahigh-resolution picture recording and playback method, device and system for a full-screen ultrahigh-resolution picture of a display wall, which can simultaneously meet the video playback requirements of ultrahigh-definition playback, audio-video synchronization and picture synchronization and solve the technical problem that the traditional picture recording and playback method cannot meet the ultrahigh-definition playback requirements.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a full-screen ultrahigh-resolution picture recording and playback method for a display wall, which is applied to a recording and playback server.
Referring to fig. 1, fig. 1 shows a flowchart of a method for recording and playing back full-screen ultrahigh resolution images of a display wall according to an embodiment of the invention.
The invention provides a full-screen ultrahigh-resolution picture recording and playback method for a display wall, which comprises the steps S1-S3.
Step S1, obtaining and storing picture recording data of a target display wall, wherein the picture recording data comprise multiple paths of video code streams and one path of audio code stream with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and each audio code stream carries corresponding second time stamp information.
Wherein the target display wall is a display wall in a conference scene, and comprises a plurality of display screens. In order to obtain the picture recording data of the target display wall, the picture of each display screen needs to be recorded. In the embodiment of the invention, recording data acquisition of pictures of each display screen is realized by acquiring multiple paths of video code streams and one path of audio code stream, wherein each path of video code stream corresponds to recording area position information, and the recording area position information is used for representing the position of the corresponding display screen. For example, when the scale of the target display wall is 2×2, there are four output channels corresponding to the processor, and each output channel corresponds to four different positions of the 2×2 display wall, for example, display wall areas (display screens) in the upper left, upper right, lower left and lower right positions. In order to obtain the image recording data of the target display wall, four recording areas are required to be set in implementation, and each recording area corresponds to an output channel of a processor. When the picture recording data are obtained, the output video is collected from each output channel, and the output video is encoded to obtain a path of video code stream, and the recording area position information carried by the path of video code stream comprises the position of the recording area corresponding to the corresponding output channel. Specifically, for example, the recording area corresponding to the first path of video code stream is left upper, the recording area corresponding to the second path of video code stream is right upper, the recording area corresponding to the third path of video code stream is left lower, and the recording area corresponding to the fourth path of video code stream is right lower.
In order to ensure the time stamp synchronization of multiple video code streams and one audio code stream, an NTP (network time protocol) synchronization technology can be adopted when audio and video data are collected. After NTP synchronization, the time error of each acquisition point can be reduced to about 1 millisecond, so that the requirement of signal synchronization can be completely met.
When the storage of the picture recording data of the target display wall is carried out, the multiple paths of video code streams and one path of audio code streams can be stored in a local disk, and the recording area position corresponding to each path of network video codes, the time stamp information of each frame of each path of network video codes and the audio time stamp information are recorded in a local database.
In one implementation manner, the obtaining the image recording data of the target display wall includes:
when a recording instruction is received, requesting the picture recording data from each recording node of the recording node group; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
and receiving video code streams sent by the recording nodes, wherein the video code streams are obtained by video coding the acquired output video of the corresponding output channel by the recording nodes.
According to the embodiment of the invention, the synchronous acquisition of the audio and video and the coding of the audio and video are realized by setting the recording nodes, wherein the number of the recording nodes is the same as the number of the output channels of the processor of the target display wall. For example, when the number of output channels of the processor of the target display wall is four, correspondingly, four recording nodes are set, the four recording nodes form a recording node group, and each recording node is responsible for collecting the output video of one output channel of the processor of the target display wall and encoding a corresponding video code stream. The specific coding mode can be to code the video frames frame by frame, and each frame carries the time stamp information of the current frame.
The NTP synchronization may be set between each recording node to achieve time stamp synchronization of each video code stream.
In order to realize the above function of the recording node, a video acquisition encoder may be used as the recording node. The video acquisition encoder is commonly used for acquiring input of HDMI/DP/DVI, outputting network coding, and supporting video compression formats of H.264, H.265 and the like by an output code stream.
In one implementation manner, the acquiring the picture recording data of the target display wall further includes:
and receiving an audio code stream sent by a recording node in the recording node group.
According to the embodiment of the invention, a recording node not only can acquire the video code stream, but also can be responsible for acquiring the on-site audio and coding the audio so as to obtain the audio code stream with the time stamp information. In specific implementation, one audio signal can be output from a sound console in a conference scene and connected to the recording node, and the connection mode is generally 3.5 mm audio line.
Step S2, when a playback instruction is received, a player is created on a desktop, the player decodes the video code stream according to the first timestamp information, and all paths of video frames obtained by decoding are spliced into a complete picture according to the recording area position information to be played, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; and simultaneously, the player decodes the audio code stream according to the second time stamp information, and synchronously plays the audio obtained by decoding according to the first time stamp information and the second time stamp information.
To achieve the same resolution of the complete picture as the picture resolution of the target display wall, in one embodiment, the resolution of the desktop of the recording and playback server may be configured to be consistent with the picture resolution of the target display wall, e.g., the processor output is M rows and N columns, and each port output is 1920×1080, and the desktop of the recording and playback server is configured to be 1920×n wide and 1080×m high. Meanwhile, when creating a player, a player supporting ultra-high resolution is created and the player is brought to full screen.
And playing the audio obtained by decoding synchronously according to the first timestamp information and the second timestamp information, specifically, matching the second timestamp information with the first timestamp information so that the audio can be played synchronously with the video.
According to the embodiment of the invention, the established player plays the complete picture according to the picture resolution of the target display wall, compared with a traditional video recorder shooting mode, the resolution of the played picture is guaranteed to be identical to that of the original display wall, the requirement of ultra-high definition playback is met, the picture quality precision of the played picture is guaranteed, the recorded audio stream is played by establishing the player on a desktop, the problem of synchronicity of transmission display among networks of different code streams can be solved, and the requirements of audio synchronization and playback picture synchronization are met.
And step S3, outputting the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
In one implementation manner, the processor for outputting the play data output by the player to the display wall to be played back includes:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
The number of the playback nodes is the same as the actual output ports of the video cards of the recording and playback server.
In the embodiment of the invention, the play data (i.e. the play picture of the player) is output to the playback node through the port of the display card or directly output to the acquisition channel of the processor. The former is suitable for the distributed processor, and the playback node collects the output of the display card and encodes the output into a network stream which is sent to the distributed processor for display. To achieve this, the playback node needs to have the capability to display in synchronization with the distributed processor's signals.
If the playback nodes are used, the audio port output of the recording playback server is accessed to one of the playback nodes, and the playback nodes encode and transmit the audio port output to the distributed processor for playing. If the playback node is not needed, the audio port of the recording playback server is directly output to the sound equipment for playing.
Through the arrangement of the playback nodes, the full-screen ultrahigh-resolution picture recording and playback method for the display wall is high in applicability, suitable for distributed processors and centralized processors, and compatible with processor systems supporting different factories on the market.
The invention also provides a full-screen ultrahigh-resolution picture recording and playback device for the display wall, which comprises:
a memory for storing instructions; the instruction is an instruction capable of realizing the full-screen ultrahigh-resolution picture recording and playback method of the display wall in any mode;
and the processor is used for executing the instructions in the memory.
The invention also provides a computer readable storage medium, which is characterized in that the computer readable storage medium is stored with a computer program, and the computer program realizes the method for recording and playing back the full-screen super-resolution picture of the display wall in any mode when being executed by a processor.
The invention also provides a full-screen ultrahigh-resolution picture recording and playback device for the display wall.
Referring to fig. 2, fig. 2 is a block diagram showing structural connection of a full-screen super-resolution image recording and playback device for a display wall according to an embodiment of the present invention.
The embodiment of the invention provides a full-screen ultrahigh-resolution picture recording and playback device for a display wall, which comprises the following components:
the device comprises an acquisition module 1, a display module and a display module, wherein the acquisition module 1 is used for acquiring and storing picture recording data of a target display wall, the picture recording data comprise multiple paths of video code streams and one path of audio code streams with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the processing module 2 is configured to create a player on a desktop when receiving a playback instruction, decode the video code stream according to the first timestamp information by the player, and splice each path of video frames obtained by decoding according to the recording region position information into a complete picture for playing, where the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
and the output module 3 is used for outputting the play data output by the player to a processor of a display wall to be played back so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
In one possible implementation, the acquisition module 1 comprises:
the request unit is used for requesting the picture recording data to each recording node of the recording node group when receiving the recording instruction; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
the first receiving unit is used for receiving video code streams sent by the recording nodes, and the video code streams are obtained by video coding of the acquired output video of the corresponding output channel by the recording nodes.
In one possible implementation, the acquisition module 1 further comprises:
and the second receiving unit is used for receiving the audio code stream sent by one recording node in the recording node group.
In one possible implementation, the output module 3 is specifically configured to:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
The invention also provides a full-screen ultrahigh-resolution picture recording and playback system of the display wall, which comprises a recording node group and a recording and playback server;
the recording node group is used for collecting picture recording data of a target display wall, the picture recording data comprises a plurality of paths of video code streams and one path of audio code stream with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the recording playback server is used for receiving and storing the picture recording data, creating a player on a desktop when receiving a playback instruction, decoding the video code stream by the player according to the first timestamp information, and splicing all paths of video frames obtained by decoding into a complete picture according to the recording area position information for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
the recording and playback server is further configured to output the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
In one implementation, the recording node group includes recording nodes the same as the number of output channels of the processor of the target display wall;
the recording playback server is specifically configured to request the picture recording data from each recording node of the recording node group when receiving a recording instruction;
the recording node is used for collecting output video corresponding to the output channel, carrying out video coding and sending the obtained video code stream to the recording playback server.
In one implementation, a recording node in the recording node group is further configured to collect the audio code stream and send the audio code stream to the recording playback server.
In one implementation, the system further includes a playback node;
if the processor of the display wall to be replayed is a centralized processor, the recording and replaying server is specifically configured to directly output the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, the recording playback server is specifically configured to output the play data to the playback node through the graphics card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working processes and effects of the above-described systems, apparatuses and modules may refer to corresponding processes and effects in the foregoing method embodiments, which are not described herein again.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (14)
1. The full-screen ultrahigh-resolution picture recording and playback method for the display wall is applied to a recording and playback server and is characterized by comprising the following steps of:
acquiring and storing picture recording data of a target display wall, wherein the picture recording data are obtained by encoding code streams of an output channel of a target display wall processor, the picture recording data comprise multiple paths of video code streams and one path of audio code streams with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and each audio code stream carries corresponding second time stamp information;
when a playback instruction is received, a player is created on a desktop, the player decodes the video code stream according to the first timestamp information, and all paths of video frames obtained by decoding are spliced into a complete picture according to the recording area position information to be played, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
and outputting the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
2. The method for full-screen ultrahigh-resolution picture recording and playback of a display wall according to claim 1, wherein the obtaining picture recording data of the target display wall comprises:
when a recording instruction is received, requesting the picture recording data from each recording node of the recording node group; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
and receiving video code streams sent by the recording nodes, wherein the video code streams are obtained by video coding the acquired output video of the corresponding output channel by the recording nodes.
3. The method for full-screen ultrahigh-resolution screen recording and playback of a display wall according to claim 2, wherein the acquiring the screen recording data of the target display wall further comprises:
and receiving an audio code stream sent by a recording node in the recording node group.
4. The method for recording and playing back full-screen ultrahigh-resolution pictures of a display wall according to claim 1, wherein the step of outputting the play data output by the player to the processor of the display wall to be played back comprises the steps of:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
5. The full-screen ultrahigh resolution picture recording and playback device for the display wall is characterized by comprising:
a memory for storing instructions; wherein the instruction is an instruction capable of realizing the full-screen ultrahigh resolution picture recording and playback method of the display wall according to any one of claims 1 to 4;
and the processor is used for executing the instructions in the memory.
6. A computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the method for recording and playing back full screen super high resolution pictures of a display wall according to any one of claims 1 to 4 is implemented.
7. The full-screen ultrahigh resolution picture recording and playback device for the display wall is characterized by comprising:
the device comprises an acquisition module, a storage module and a display module, wherein the acquisition module is used for acquiring and storing picture recording data of a target display wall, the picture recording data are obtained by encoding code streams of an output channel of a processor of the target display wall, the picture recording data comprise multiple paths of video code streams and one path of audio code stream with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the processing module is used for creating a player on a desktop when receiving a playback instruction, decoding the video code stream by the player according to the first timestamp information, and splicing all paths of video frames obtained by decoding into a complete picture according to the recording area position information for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
and the output module is used for outputting the play data output by the player to a processor of a display wall to be played back so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
8. The display wall full screen ultra-high resolution picture recording and playback apparatus of claim 7, wherein said acquisition module comprises:
the request unit is used for requesting the picture recording data to each recording node of the recording node group when receiving the recording instruction; the number of the recording nodes of the recording node group is the same as the number of the output channels of the processor of the target display wall;
the first receiving unit is used for receiving video code streams sent by the recording nodes, and the video code streams are obtained by video coding of the acquired output video of the corresponding output channel by the recording nodes.
9. The display wall full screen ultra-high resolution picture recording and playback apparatus of claim 8, wherein said acquisition module further comprises:
and the second receiving unit is used for receiving the audio code stream sent by one recording node in the recording node group.
10. The display wall full-screen ultra-high resolution picture recording and playback apparatus of claim 7, wherein said output module is specifically configured to:
if the processor of the display wall to be replayed is a centralized processor, directly outputting the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, outputting the play data to a playback node through a display card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
11. The full-screen ultrahigh-resolution picture recording and playback system for the display wall is characterized by comprising a recording node group and a recording and playback server;
the recording node group is used for collecting picture recording data of a target display wall, the picture recording data are obtained by encoding code streams of an output channel of a target display wall processor, the picture recording data comprise multiple paths of video code streams and one path of audio code streams with synchronous time stamps, each path of video code stream carries corresponding recording area position information and first time stamp information of each video frame, and the audio code stream carries corresponding second time stamp information;
the recording playback server is used for receiving and storing the picture recording data, creating a player on a desktop when receiving a playback instruction, decoding the video code stream by the player according to the first timestamp information, and splicing all paths of video frames obtained by decoding into a complete picture according to the recording area position information for playing, wherein the resolution of the complete picture is the same as the picture resolution of the target display wall; simultaneously, the player decodes the audio code stream according to the second timestamp information, and synchronously plays the audio obtained by decoding according to the first timestamp information and the second timestamp information;
the recording and playback server is further configured to output the play data output by the player to a processor of a display wall to be played back, so that the processor controls the display wall to be played back to play the play data according to the picture resolution.
12. The display wall full screen ultra high resolution picture recording and playback system of claim 11, wherein said recording node group comprises the same number of recording nodes as the number of output channels of the processor of said target display wall;
the recording playback server is specifically configured to request the picture recording data from each recording node of the recording node group when receiving a recording instruction;
the recording node is used for collecting output video corresponding to the output channel, carrying out video coding and sending the obtained video code stream to the recording playback server.
13. The system of claim 12, wherein a recording node in the recording node group is further configured to collect the audio code stream and send the audio code stream to the recording playback server.
14. The display wall full screen ultra high resolution picture recording and playback system of claim 11, further comprising a playback node;
if the processor of the display wall to be replayed is a centralized processor, the recording and replaying server is specifically configured to directly output the play data to an acquisition channel of the processor of the display wall to be replayed; and/or if the processor of the playback display wall is a distributed processor, the recording playback server is specifically configured to output the play data to the playback node through the graphics card port, so that the playback node encodes the play data into a network stream and transmits the network stream to the distributed processor.
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