CN110602442B - Method for realizing real-time code stream playing control in video monitoring system - Google Patents
Method for realizing real-time code stream playing control in video monitoring system Download PDFInfo
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- CN110602442B CN110602442B CN201910600545.9A CN201910600545A CN110602442B CN 110602442 B CN110602442 B CN 110602442B CN 201910600545 A CN201910600545 A CN 201910600545A CN 110602442 B CN110602442 B CN 110602442B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4782—Web browsing, e.g. WebTV
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention discloses a method for realizing real-time code stream playing control in a video monitoring system, which belongs to the technical field of real-time code stream playing control and comprises the following steps: s1, manufacturing a video control bar; s2, normally playing; s3, playing at double speed; s4, playing control; and S5, dragging the video. A control bar is made by acquiring basic information of a live streaming video, different self-increment amounts are set in the control bar through self-increment control points, and the video transmission rate is changed; modifying the id of the local video object by logging out the video object in the browser, and enabling the back end to push the stream again; the method has the advantages that the new browser video object is generated by modifying the local video object id, and the live video stream with the start time of the dragging point and the end time of the video as the end time is realized, so that the functions of fast rewinding, fast forwarding, pausing, playing, double-speed playing and mouse dragging of the video are realized, the playing of the live video stream is conveniently adjusted manually, and the method is more convenient to use.
Description
Technical Field
The invention relates to the technical field of real-time code stream playing control, in particular to a method for realizing real-time code stream playing control in a video monitoring system.
Background
With the rapid development of information technology and network applications, new things such as wireless networks, internet, multimedia, remote transmission, broadband communication, etc. have gradually changed our work and life style without suspicion. Research shows that the information obtained by human beings through vision accounts for about 70% of the information amount, the video information has the advantages of intuition, observability and the like, the application range of the video is wide, the functions are many, some videos are monitoring videos, and the monitoring videos are transmitted to a user monitoring picture in real time.
The monitoring video is generally real-time code stream transmission video data, the rate of the real-time code stream transmission video is related to the network rate, the video playing rate cannot be controlled, and functions such as backing, multiple playing, making playing and the like cannot be performed according to the user requirements, so that the monitoring video is inconvenient for the user to watch.
Disclosure of Invention
The invention aims to provide a method for realizing real-time code stream playing control in a video monitoring system in order to solve the problem that the progress of a video is difficult to adjust artificially due to the inconvenience of playing speed control of a real-time code stream video, and the method has the advantages of realizing the functions of fast rewinding, fast forwarding, pausing, playing, double-speed playing and mouse dragging of the video by adding a control bar.
The invention realizes the aim through the following technical scheme, and a method for realizing real-time code stream playing control in a video monitoring system comprises the following steps:
s1, manufacturing a video control bar: acquiring basic information of a video to be played from an application gateway interface, wherein the basic information comprises a video live broadcast address, start time and end time, a newly-built variable is used for storing the values of the start time and the end time converted from a Date format into a timestamp, the two timestamps are used as the start value and the end value of a control bar, and the character string values of the start time and the end time are used as default display information at two ends of the control bar;
s2, normal playing: the front end calls a self-defining method by using a setInterval timer, in the method, firstly, a currentTime of a current attribute value of a browser video object is obtained for comparing with a currentTime recorded by the local video object, wherein the currentTime is the currentTime attribute value of the browser video object in one second, if the two values are the same, the current video is not played, otherwise, the current video is played;
s3, double-speed playing: assigning a currentTime attribute value of a browser video object to a currentTime variable of a local video object, judging the playing speed of a video currently being played, setting different self-increments for self-incremented control points in a control bar, converting a control point value into a character type date format for displaying a default display format of the control point, connecting the video through a heartbeat interface by equipment, acquiring the playing time of the currently played video, assigning the control point variable to the local video object, and immediately calling the interface to notify a rear end to change the video transmission speed when receiving the change of the speed variable of the local video object;
s4, playing control: after receiving a command of pausing playing, firstly logging off a video object in a browser, modifying a local video object id, sending the command through an interface, informing a rear end to stop pushing a video stream, after receiving a command of replaying, informing the rear end of the position and the ending time of the current video played through the interface, and leading the rear end to push the stream again, and modifying the local video object id for regenerating the browser video object;
s5, video dragging: recording a dragging point, destroying a browser object, modifying a local video object id, informing a back end to re-push a live video stream with the dragging point as a starting time and the video end time as an end time, and after successfully receiving the video stream re-pushed by the back end, modifying the local video object id to generate the browser video object.
Preferably, in step S2, the setInterval timer is an interval call instruction, and the interval of the instruction calling the custom method is 1S.
Preferably, the currentTime attribute value of the browser video object in step S2 is used to record the elapsed time of the current device in video playing.
Preferably, the heartbeat interface in step S3 is to send a heartbeat signal through a heartbeat link at a timing between the main and standby machines, and the time interval is 50S.
Compared with the prior art, the invention has the beneficial effects that: a control bar is made by acquiring basic information of a live streaming video, different self-increment amounts are set in the control bar through self-increment control points, and the video transmission rate is changed; modifying the id of the local video object by logging out the video object in the browser, and enabling the back end to push the stream again; the method has the advantages that the new browser video object is generated by modifying the local video object id, and the live video stream with the start time of the dragging point and the end time of the video as the end time is realized, so that the functions of fast rewinding, fast forwarding, pausing, playing, double-speed playing and mouse dragging of the video are realized, the playing of the live video stream is conveniently adjusted manually, and the method is more convenient to use.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method for realizing real-time code stream playing control in a video monitoring system comprises the following steps:
s1, manufacturing a video control bar: acquiring basic information of a video to be played from an application gateway interface, wherein the basic information comprises a video live broadcast address, start time and end time, a newly-built variable is used for storing the values of the start time and the end time converted from a Date format into a timestamp, the two timestamps are used as the start value and the end value of a control bar, and the character string values of the start time and the end time are used as default display information at two ends of the control bar;
s2, normal playing: the front end calls a self-defining method by using a setInterval timer, in the method, firstly, a currentTime of a current attribute value of a browser video object is obtained to be compared with a currentTime recorded by the local video object (the currentTime is the currentTime attribute value of one second of the browser video object), if the two values are the same, the current video is not played, otherwise, the current video is played;
s3, double-speed playing: assigning a currentTime attribute value of a browser video object to a currentTime variable of a local video object, judging the playing speed of a video currently being played, setting different self-increments for self-incremented control points in a control bar, converting a control point value into a character type date format for displaying a default display format of the control point, connecting the video through a heartbeat interface by equipment, acquiring the playing time of the currently played video, assigning the control point variable to the local video object, and immediately calling the interface to notify a rear end to change the video transmission speed when receiving the change of the speed variable of the local video object;
s4, playing control: after receiving a command of pausing playing, firstly logging off a video object in a browser, modifying a local video object id, sending the command through an interface, informing a rear end to stop pushing a video stream, after receiving a command of replaying, informing the rear end of the position and the ending time of the current video played through the interface, and leading the rear end to push the stream again, and modifying the local video object id for regenerating the browser video object;
s5, video dragging: recording a dragging point, destroying a browser object, modifying a local video object id, informing a back end to re-push a live video stream with the dragging point as a starting time and the video end time as an end time, and after successfully receiving the video stream re-pushed by the back end, modifying the local video object id to generate the browser video object.
The setInterval timer in step S2 is an intermittent call instruction, the interval for calling the custom method is 1S, the currentTime attribute value of the browser video object in step S2 is used to record the elapsed time of the current device during video playing, the heartbeat interface in step S3 is to send a heartbeat signal through a heartbeat link at regular time between the main and standby machines, and the time interval is 50S.
The mode of adding the playing control bar is based on video.js, the playing control bar is a live stream based on rtmp protocol, the video.js is a general JS library embedded in a video player on a webpage, the video.js automatically detects the support condition of a browser on HTML5, and if the HTML5 is not supported, a Flash player is automatically used; the Rtmp protocol is used by Flash for the transmission of objects, video, audio, and is based on the TCP protocol or the polling HTTP protocol.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A method for realizing real-time code stream playing control in a video monitoring system is characterized in that: the method comprises the following steps:
s1, manufacturing a video control bar: acquiring basic information of a video to be played from an application gateway interface, wherein the basic information comprises a video live broadcast address, start time and end time, a newly-built variable is used for storing the values of the start time and the end time converted from a Date format into a timestamp, the two timestamps are used as the start value and the end value of a control bar, and the character string values of the start time and the end time are used as default display information at two ends of the control bar;
s2, normal playing: the front end calls a self-defining method by using a setInterval timer, in the method, firstly, a currentTime of a current attribute value of a browser video object is obtained for comparing with a currentTime recorded by the local video object, wherein the currentTime is the currentTime attribute value of the browser video object in one second, if the two values are the same, the current video is not played, otherwise, the current video is played;
s3, double-speed playing: assigning a currentTime attribute value of a browser video object to a currentTime variable of a local video object, judging the playing speed of a video currently being played, setting different self-increments for self-incremented control points in a control bar, converting a control point value into a character type date format for displaying a default display format of the control point, connecting the video through a heartbeat interface by equipment, acquiring the playing time of the currently played video, assigning the control point variable to the local video object, and immediately calling the interface to notify a rear end to change the video transmission speed when receiving the change of the speed variable of the local video object;
s4, playing control: after receiving a command of pausing playing, firstly logging off a video object in a browser, modifying a local video object id, sending the command through an interface, informing a rear end to stop pushing a video stream, after receiving a command of replaying, informing the rear end of the position and the ending time of the current video played through the interface, and leading the rear end to push the stream again, and modifying the local video object id for regenerating the browser video object;
s5, video dragging: recording a dragging point, destroying a browser object, modifying a local video object id, informing a back end to re-push a live video stream with the dragging point as a starting time and the video end time as an end time, and after successfully receiving the video stream re-pushed by the back end, modifying the local video object id to generate the browser video object.
2. The method for implementing real-time code stream playing control in a video monitoring system according to claim 1, wherein: the setInterval timer in step S2 is an intermittent call instruction, and the interval of calling the custom method by the instruction is 1S.
3. The method for implementing real-time code stream playing control in a video monitoring system according to claim 1, wherein: the currentTime attribute value of the browser video object in step S2 is used to record the elapsed time of the current device in video playing.
4. The method for implementing real-time code stream playing control in a video monitoring system according to claim 1, wherein: the heartbeat interface in step S3 is to send a heartbeat signal through a heartbeat link at a timing between the main and standby machines, and the time interval is 50S.
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| CN115623252B (en) * | 2022-12-16 | 2023-03-10 | 深圳市永兴元科技股份有限公司 | Method, device and storage medium for controlling restarting and stream pushing of automatic detection of online examination |
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| CN101202919A (en) * | 2007-11-06 | 2008-06-18 | 深圳市同洲电子股份有限公司 | Digital television receiver and intermediate part |
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