CN102355455A - Video information processing method - Google Patents
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- CN102355455A CN102355455A CN2011102560080A CN201110256008A CN102355455A CN 102355455 A CN102355455 A CN 102355455A CN 2011102560080 A CN2011102560080 A CN 2011102560080A CN 201110256008 A CN201110256008 A CN 201110256008A CN 102355455 A CN102355455 A CN 102355455A
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Abstract
The invention relates to the technical field of rail transportation, and discloses a video information processing method, which comprises the three stages of media designing, media edition and publishing, and media playing. In the media designing stage, the edition and designing of media and materials are realized. In the media edition and publishing stage, a play list, play formats and a play plan are set, each player is mapped with corresponding play formats and configuration information is transmitted to the players after the setting is finished. In the media playing stage, the synthesis superposing playing output of media information is realized, and simultaneously, in a media playing process, data updating and player status reporting with a server are periodically performed. By the method, the video information processing cost of a rail transportation passenger information system can be decreased, the complete synchronization of video pictures and sounds can be ensured and continuous and smooth passenger information pictures with high quality can be provided for passengers.
Description
Technical field
The present invention relates to the track traffic technical field, be specifically related to a kind of video information processing method.
Background technology
There are 2 patents about the track traffic passenger information system at present:
1, novel subway passenger information system [concrete structure is seen Fig. 1]: be used for subway supervisory control system field, it is characterized in that, comprising: server is used for whole system is carried out centralized control and information processing; The traffic control station provides operational order through its man-machine interface to the dispatcher, and through standard communication protocol selected operational order is sent to above-mentioned server; The maintenance management work station is used for through files such as general video editing software editing advertisement, videos, and through standard communication protocol above-mentioned video file is uploaded to above-mentioned server; Video distributor is connected to above-mentioned server, is used for driving display; Audio-frequency power amplifier is connected to above-mentioned server, is used to drive loud speaker; Wherein, the software of above-mentioned server end comprises: the control message processing module (MPM), accomplish the verification and the analysis of control message, and dissimilar control messages calls different module and accomplishes function corresponding; The video synthesis module synthesizes the rear drive display to the video information of needs demonstration and shows; The audio frequency synthesis module is accomplished the translation function of literal to voice, the audio-frequency information of needs broadcast is handled the rear drive loud speaker play.
With the existing function of this two cover system of audio information broadcast system and system for displaying video information independently separately; Through introducing new technologies such as audio frequency synthetic technology and video synthetic technology; They are integrated in the same set of system realize, unified hardware and software platform and unified human-computer interaction interface are provided.
2, passenger information system [concrete structure is seen Fig. 2]: comprise passenger information system administrative unit, audio frequency control and power amplifier unit, audio frequency and video output unit, function control unit, passenger information display terminal, passenger's intercommunication broadcast terminal and passenger's recreation terminal equipment; Administrative unit is transferred to audio output unit through bus with audio, video data, and the audio frequency and video output unit is through function control unit control passenger recreation terminal equipment; Administrative unit realizes and the audio frequency control and power amplifier unit control passenger information display terminal and the passenger's intercommunication broadcast terminal that are arranged in each compartment through bus.Through full row RS485 bus, the operating state that the administrative unit of passenger information system can the supervisory control system all devices.Demonstration, public broadcasting, the point-to-point communication of audio frequency and video entertainment, various information are provided for the passenger.This invention belongs to railer's information system, particularly a kind of based on bus the control passenger information and can with the passenger information system of train network supervisory control system communication.
Above-mentioned patent novel subway passenger information system is based on the hardware compression mode video information is handled, and audio information broadcast system and system for displaying video information are synthesized back output.And the passenger information system employing is monitored system equipment based on the mode of bus and terminal equipment is carried out communication.More than two kinds of passenger information systems mode of all being based on hardware compression carry out audio and video information and handle, adopts simple hard coded mode, system relationship is very tight, is unfavorable for that function expands; Equipment interface is many under the hard coded mode, operation cost is high.Prior art exists following not enough:
1, the information processing cost is high.Existing track traffic passenger information system is encoded according to the video card hardware mode, and video file, audio file through main control server output are synthesized back output.Carry out hardware encoding at server end, audio frequency, the synthetic output of video after player end is carried out hard decoder, specialty coding, decoding device costliness, operation cost is higher.Simultaneously, audio frequency, video are exported separately, and equipment interface increases, and has increased the fault point, also are not easy to safeguard.
2, video pictures and sound asynchrony phenomenon are serious.Existing passenger information system thinking is that audio file and video file are transmitted respectively; Because factors such as transmission delay, signal attenuation, audio file and video file transmission time are inconsistent; After the synthetic broadcast in terminal; Often occur playing sound and the inconsistent phenomenon of broadcasting pictures, influence system effect.
When 3, Network Transmission postponed, picture was play discontinuous smoothness.Existing passenger information system is taked video to compile to broadcast, information is superimposed upon server end and accomplishes, and overall transfer is to the terminal plays pattern then, and transinformation is bigger, and phenomenons such as under the relatively poor situation of transmission signals, the information broadcast is discontinuous, mosaic are difficult to overcome.Particularly in the vehicle-mounted passenger information system of urban track traffic, because train passes through the tunnel or the signal transmission runs under the disturbed condition, the information dropout that terminal equipment receives is serious, and broadcasting pictures is second-rate, is difficult to accomplish the continuous smooth playing of picture.
To sum up, the video information processing method of current track traffic passenger information system exists that the information processing cost is higher, the audio frequency and video picture synchronization is relatively poor, when transmission signals is relatively poor, be difficult to accomplish picture deficiency such as broadcast continuously, finally influences system's operation management performance.
Summary of the invention
(1) technical problem that will solve
Technical problem to be solved by this invention is: how to reduce the video information process cost of track traffic passenger information system, how provide continuous smoothness high-quality broadcasting pictures for the passenger.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of video information processing method, it may further comprise the steps:
S1, media Design step: work station editing media material, in media materials, add to play pattern, result of broadcast, form media file, work station will be accomplished the media library that the media file of design is uploaded onto the server, and the confession media library calls;
S2, media editing and issuing steps: playlist is set, plays format and playing plan; And set up said player and play the mapping relations between the format; After completion is set; Said server carries out the configuration information of each player to send to player after digital signature, compression and the encryption, configuration information comprise this player playlist, play dynamic variable and dynamic variable logic control script file in format, playing plan and each playlist;
S3, media play step: comprise S3-1 media play, S3-2 Data Update and S3-3 player status monitoring three phases;
S3-1, media play: player obtains the file that server issues, and synthesizes to be superimposed as video information, shows through the port in the player video card behind the soft transcoding;
S3-2, Data Update: player periodically detects the configuration information of this player in server, when finding to have new file to upgrade, obtains transaction file, carries out the information stack according to latest and file data, generates broadcast information output;
S3-3, player status monitoring: player periodically reports operating state, presence to server; Server record player daily record of work; Unique ID that server generates according to the cryptographic algorithm combination; Judge whether this player is legal; When illegal player inserted, player was not worked.
Preferably, step S1 specifically comprises:
101): work station is opened media materials, and the editing media material is play pattern, result of broadcast to wherein adding;
102): in media materials, add static constant, dynamic variable, wherein static constant can not change, and dynamic variable is the change dynamics change of dynamic variable institute assignment according to the media play phase;
103): the media Design work station will be accomplished the media file media library of uploading onto the server of design, as the media materials of media editing and launch phase.
Preferably, step S2 specifically comprises:
104): playlist is set: from media library, select n media file; Edit playing duration, the playing sequence of each media file, form playlist, but playlist is the minimum unit of independent play-out; 1≤n≤N, N are total number of media file in the media library;
105): the broadcast format is set: ratio, the screen size of selecting to play format; Select format to comprise what playlists; Positional information (the X of each playlist at player is set; Y, H, W); And the control logic that dynamic variable comes into force in each playlist; When broadcast information, change through control logic, realize the switching of play content; Positional information (X, Y, H wherein; W) implication of each coordinate is in: X representes the abscissa of playlist with respect to initial point, and Y representes the ordinate of playlist with respect to initial point, and H representes the height of playlist; W representes the width of playlist, and initial point is the screen top left corner apex;
106): playing plan is set: the broadcast schedule of respectively playing format is set, comprises the broadcast schedule of playing playlist under the format;
107): player is set: player information is set, player and certain is play format carry out relatedly, this player will be play according to this configuration information of playing format, and player information comprises IP address, mac address information.
Preferably, step S3-1 comprises:
108): player obtains the associated media file of this player from server, comprises playing format, playlist, playing plan and dynamic variable logic control script;
109): player reads the file/data of the dynamic variable mapping that is issued to the player hard disk from server and external interface, if server or external interface Update Information, adopts the information broadcast pattern, shifts each player down onto;
110): the medium in the player cycle repeating query hard disk; And according to the file/data of the dynamic variable logic control script in the medium, dynamic variable, dynamic variable mapping; Synthetic be superimposed as video information, show through the output of the HDMI (High Definition Multimedia Interface) in the player video card behind the soft coding.
Preferably, step S3-2 comprises:
111): player periodically detects the configuration information of this player at server end;
112) whether: detecting this player has medium, broadcast format, playlist, playing plan, control script and data to need to upgrade in server;
113): when finding the transaction file of needs is arranged, obtain the medium and the file data that need renewal;
114): medium and file data in the cycle repeating query hard disk, carry out the information stack according to latest and file data, generate broadcast information output.
Preferably, step S3-3 comprises:
115): player regularly reports operating state, the presence of player to server;
116): adopt the md5 encryption algorithm, whether server is according to unique ID of IP, MAC and three kinds of information combination generations of server clock of each player, correct through judging this id information, thereby confirms the legitimacy of this player;
117): server record player daily record of work;
118): data check, whether this player is legitimate player in the server administration; Data verification is passed through, normal play information; Data verification is not passed through, and player is broadcast information not, the illegal daily record of server record.
Preferably, among the step S3-3, unique ID that server generates according to MD5 irreversible encryption algorithm according to player IP address, MAC Address and three kinds of information of server clock information.
Preferably, among the step S2, said broadcast format with the webpage format setting respectively play the abscissa, ordinate of playlist in the format, highly, width information.
Preferably, when in step S3, playing,, realize the switching of play content through logical changes in the control dynamic variable logic control script file.
Preferably, among the step S3-1, player will be deciphered and decompress from the file that server receives, and with soft decoding process, according to playing plan, broadcast format, playlist and the configuration information of corresponding period synthesized the stack back play.
(3) beneficial effect
Beneficial effect of the present invention is:
The video information process cost is low: adopt soft coding and decoding mode, in player end the stack back is deciphered, reduces, synthesized to media file, data, configuration information and play.Audio frequency, video synthetic technology with respect under the existing hard coding and decoding pattern do not need professional encoder at server, do not need professional decoder in player end, have reduced the video information process cost;
The information playing audio-video is synchronous fully: adopt information overall transfer pattern, avoided audio frequency and video to transmit video pictures and sound asynchrony phenomenon under the synthesis model separately again;
The information broadcasting pictures is smooth continuously: information processing is handled in the player hard disk, and is lower to network bandwidth dependence, effectively avoided because the information that Network Transmission postpones to cause is broadcasted discontinuous smooth phenomenon.When network delay is serious, adopt passenger information system video information of the present invention to broadcast and can guarantee that picture is smooth continuously, improved the sense organ effect that Customer information is listened to.
Transinformation is little: take the mode of static variable and dynamic variable combination, the metro operation period is only transmitted dynamic variable information, and bigger static file data can reduce transinformation in the transmission of subway non-operation period;
Safe: message transmission is taked to encrypt, the deciphering measure, and unique ID authentication that the player authentication takes the md5 encryption algorithm to generate has guaranteed the fail safe that player inserts and data insert.
Description of drawings
Fig. 1 is the structural representation of existing subway passenger information system;
Fig. 2 is existing passenger information system module's logic structure figure;
Fig. 3 is a method flow diagram of the present invention.
Embodiment
Regard to a kind of video information processing method proposed by the invention down, describe in detail in conjunction with accompanying drawing and embodiment.
At first explain used several nouns among the present invention:
Player: message pick-up and playback terminal, generally adopt industrial computer or embedded host.The media file of player reception server, data, configuration data broadcast the synthetic stack of information back to the local hard drive of player.
Playlist: be minimum broadcast unit that can independent play-out in the broadcasting pictures, the related one type of broadcast information of each playlist.Playlist can be nested, and less playlist can be formed a bigger playlist.
Play format:, play format and form by one or more playlists for finally presenting to passenger's broadcasting pictures layout pattern.
Playing plan: for playing the broadcast schedule of format.Can broadcast schedule that play playlist under the format be provided with, form detailed playing plan.
As shown in Figure 3, the method for implementing according to the present invention is particularly useful in the track traffic passenger information system, and described track traffic passenger information system can be an existing system arbitrarily.Comprise media Design stage, media editing and launch phase and media play stage, each stage works as follows:
One, the media Design stage:
101): the media Design work station is opened media materials, and the editing media material is play pattern, result of broadcast to wherein adding;
102): in media materials, add static constant, dynamic variable.Wherein static constant can not change, and dynamic variable is the change dynamics change of dynamic variable institute assignment according to the media play phase; Among the present invention, dynamic variable is defined as the variable that play content can be provided with when playing.
103): the media Design work station will be accomplished the media file media library of uploading onto the server of design, as the media materials of media editing and launch phase.
Two, media editing and launch phase:
104): playlist is set.From media library, select the individual media file of n (1≤n≤N, N are total number of media file in the media library), edit playing duration, the playing sequence of each media file, form playlist.But playlist is the minimum unit of independent play-out;
105): the broadcast format is set.Select to play ratio, the screen size of format, select format to comprise what playlists, be provided with each playlist the positional information of player (X, Y, H, W), and the control logic that dynamic variable comes into force in each playlist.When broadcast information, change through control logic, realize the switching of play content; Wherein positional information (X, Y, H, W) in the implication of each coordinate be: X representes the abscissa of playlist with respect to initial point.Y representes the ordinate of playlist with respect to initial point.H representes the height of playlist.W representes the width of playlist.Initial point is the screen top left corner apex.
106): playing plan is set.The broadcast schedule of respectively playing format is set, comprises the broadcast schedule of playing playlist under the format.Through the schedule setting, the reproduction time plan of each minimum broadcast unit in the may command broadcast information;
107): player is set.Player information is set, player and certain is play format carry out relatedly, this player will be play according to this configuration information of playing format.Player information comprises IP address, mac address information.
Three, the media play stage: comprise that S3-1 media play, S3-2 Data Update and S3-3 player status monitor three sub-phase.
S3-1, media play: player obtains the file that server issues, and synthesizes to be superimposed as video information, shows through the output of the HDMI mouth in the player video card behind the soft transcoding.S3-1 comprises step 108～110:
108): player obtains the associated media file of this player from server, comprises playing format, playlist, playing plan and dynamic variable logic control script;
109): player reads the file/data of the dynamic variable mapping that is issued to the player hard disk from server and external interface.If server or external interface Update Information, adopt the information broadcast pattern, shift each player down onto;
110): the medium in the player cycle repeating query hard disk; And according to the file/data of the dynamic variable logic control script in the medium, dynamic variable, dynamic variable mapping; Synthetic be superimposed as video information, show through the HDMI (HDMI (High Definition Multimedia Interface)) in the player video card mouthful of output behind the soft coding.
Among the present invention, medium are synthetic, and (H W), carries out the complete broadcasting pictures of combined and spliced one-tenth at player terminal for X, Y, and the dynamic variable in each playlist shows according to variate-value according to the positional information of playing each playlist setting of format.When the resolution of player display screen with synthetic after picture dimension when inconsistent, broadcasting pictures carries out exporting behind the corresponding convergent-divergent according to the ratio of picture dimension and player display resolution.
S3-2, Data Update: the configuration information of this player of player cycle detection in server, when finding to have new file to upgrade, obtain transaction file, carry out the information stack according to latest and file data, generate broadcast information output.S3-2 comprises step 111～114:
111): player periodically detects the configuration information of this player at server end;
112) whether: detecting this player has medium, broadcast format, playlist, playing plan, control script and data to need to upgrade in server;
113): when finding the transaction file of needs is arranged, obtain the medium and the file data that need renewal;
114): medium and file data in the cycle repeating query hard disk, carry out the information stack according to latest and file data, generate broadcast information output.
S3-3, player status monitoring: player periodically reports operating state, presence to server, server record player daily record of work.Unique ID that server generates according to MD5 irreversible encryption algorithm according to player IP address, MAC Address and three kinds of information of server clock information; Judge whether this player is legal; When illegal player inserted, player was not worked, and guaranteed to insert the safety of player.S3-3 comprises step 115～120:
115): player regularly reports operating state, the presence of player to server;
116): adopt the md5 encryption algorithm, whether server is according to unique ID of IP, MAC and three kinds of information combination generations of server clock of each player, correct through judging this id information, thereby confirms the legitimacy of this player;
117): server record player daily record of work;
118): data check, whether this player is legitimate player in the server administration;
119): data verification is passed through, normal play information;
120): data verification is not passed through, and player is broadcast information not, the illegal daily record of server record.
Above execution mode only is used to illustrate the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field; Under the situation that does not break away from the spirit and scope of the present invention; Can also make various variations and modification; Therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a video information processing method is characterized in that, may further comprise the steps:
S1, media Design step: work station editing media material, in media materials, add to play pattern, result of broadcast, form media file, work station will be accomplished the media library that the media file of design is uploaded onto the server, and the confession media library calls;
S2, media editing and issuing steps: playlist is set, plays format and playing plan; And set up said player and play the mapping relations between the format; After completion is set; Said server carries out the configuration information of each player to send to player after digital signature, compression and the encryption, configuration information comprise this player playlist, play dynamic variable and dynamic variable logic control script file in format, playing plan and each playlist;
S3, media play step: comprise S3-1 media play, S3-2 Data Update and S3-3 player status monitoring three phases;
S3-1, media play: player obtains the file that server issues, and synthesizes to be superimposed as video information, shows through the port in the player video card behind the soft transcoding;
S3-2, Data Update: player periodically detects the configuration information of this player in server, when finding to have new file to upgrade, obtains transaction file, carries out the information stack according to latest and file data, generates broadcast information output;
S3-3, player status monitoring: player periodically reports operating state, presence to server; Server record player daily record of work; Unique ID that server generates according to the cryptographic algorithm combination; Judge whether this player is legal; When illegal player inserted, player was not worked.
2. the method for claim 1 is characterized in that, step S1 specifically comprises:
101): work station is opened media materials, and the editing media material is play pattern, result of broadcast to wherein adding;
102): in media materials, add static constant, dynamic variable, wherein static constant can not change, and dynamic variable is the change dynamics change of dynamic variable institute assignment according to the media play phase;
103): the media Design work station will be accomplished the media file media library of uploading onto the server of design, as the media materials of media editing and launch phase.
3. method as claimed in claim 2 is characterized in that step S2 specifically comprises:
104): playlist is set: from media library, select n media file; Edit playing duration, the playing sequence of each media file, form playlist, but playlist is the minimum unit of independent play-out; 1≤n≤N, N are total number of media file in the media library;
105): the broadcast format is set: ratio, the screen size of selecting to play format; Select format to comprise what playlists; Positional information (the X of each playlist at player is set; Y, H, W); And the control logic that dynamic variable comes into force in each playlist; When broadcast information, change through control logic, realize the switching of play content; Positional information (X, Y, H wherein; W) implication of each coordinate is in: X representes the abscissa of playlist with respect to initial point, and Y representes the ordinate of playlist with respect to initial point, and H representes the height of playlist; W representes the width of playlist, and initial point is the screen top left corner apex;
106): playing plan is set: the broadcast schedule of respectively playing format is set, comprises the broadcast schedule of playing playlist under the format;
107): player is set: player information is set, player and certain is play format carry out relatedly, this player will be play according to this configuration information of playing format, and player information comprises IP address, mac address information.
4. method as claimed in claim 3 is characterized in that step S3-1 comprises:
108): player obtains the associated media file of this player from server, comprises playing format, playlist, playing plan and dynamic variable logic control script;
109): player reads the file/data of the dynamic variable mapping that is issued to the player hard disk from server and external interface, if server or external interface Update Information, adopts the information broadcast pattern, shifts each player down onto;
110): the medium in the player cycle repeating query hard disk; And according to the file/data of the dynamic variable logic control script in the medium, dynamic variable, dynamic variable mapping; Synthetic be superimposed as video information, show through the output of the HDMI (High Definition Multimedia Interface) in the player video card behind the soft coding.
5. method as claimed in claim 4 is characterized in that step S3-2 comprises:
111): player periodically detects the configuration information of this player at server end;
112) whether: detecting this player has medium, broadcast format, playlist, playing plan, control script and data to need to upgrade in server;
113): when finding the transaction file of needs is arranged, obtain the medium and the file data that need renewal;
114): medium and file data in the cycle repeating query hard disk, carry out the information stack according to latest and file data, generate broadcast information output.
6. method as claimed in claim 5 is characterized in that step S3-3 comprises:
115): player regularly reports operating state, the presence of player to server;
116): adopt the md5 encryption algorithm, whether server is according to unique ID of IP, MAC and three kinds of information combination generations of server clock of each player, correct through judging this id information, thereby confirms the legitimacy of this player;
117): server record player daily record of work;
118): data check, whether this player is legitimate player in the server administration; Data verification is passed through, normal play information; Data verification is not passed through, and player is broadcast information not, the illegal daily record of server record.
7. the method for claim 1 is characterized in that, among the step S3-3, and unique ID that server generates according to MD5 irreversible encryption algorithm according to player IP address, MAC Address and three kinds of information of server clock information.
8. the method for claim 1 is characterized in that, among the step S2, said broadcast format with the webpage format setting respectively play the abscissa, ordinate of playlist in the format, highly, width information.
9. the method for claim 1 is characterized in that, when in step S3, playing, through logical changes in the control dynamic variable logic control script file, realizes the switching of play content.
10. like each described method in the claim 1～9; It is characterized in that; Among the step S3-1; Player will be deciphered and decompress from the file that server receives; With soft decoding process; According to playing plan, broadcast format, playlist and the configuration information of corresponding period synthesized the stack back play.
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| CN103092603A (en) * | 2012-12-10 | 2013-05-08 | 乐视网信息技术（北京）股份有限公司 | Method and system for configuring player and corresponding player |
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