CN101924932A - Rapid making method of CNVS multimedia courseware - Google Patents
Rapid making method of CNVS multimedia courseware Download PDFInfo
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- CN101924932A CN101924932A CN 200910086321 CN200910086321A CN101924932A CN 101924932 A CN101924932 A CN 101924932A CN 200910086321 CN200910086321 CN 200910086321 CN 200910086321 A CN200910086321 A CN 200910086321A CN 101924932 A CN101924932 A CN 101924932A
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Abstract
The invention discloses a rapid making method of a CNVS multimedia courseware, comprising the following steps of: 1, encoding analog audio and video signals to generate an ASF (Advance Streaming Format) file; 2, editing the ASF file generated by the transcribed audio and video signals into a single ASF stream so as to realize automatic switching when playing the ASF file; and 3, adding mark and description information in the ASF stream. The invention is a hi-tech practical technology with extremely short period of courseware making and extremely fast making speed, is particularly suitable to online education, distance education and elective course teaching, and is bond to play positive roles in various online school, TV university and sharing of lecture resources of excellent teachers.
Description
Technical field
The present invention relates to multimedia technology field, particularly a kind of manufacture method of multimedia courseware.
Background technology
Along with being extensive use of of based courseware, getting more and more of courseware development quantity presses for the multimedia segment that an instrument is finished courseware fast.
At present, the mainstream technology of multimedia courseware is a stream media technology.It can produce interactive training course content and e-learning teaching material etc.Only need pass through browser, just can see speaker's image simultaneously and hear speaker's sound, other media contents such as picture, text and animation that cooperate synchronous playing in addition, allow everyone can effectively receive the speaker and want information conveyed and knowledge, really realized " link up and do not have distance " of cybertimes.Stream media technology is to be a kind of network new technology that the multimedia messages transmission problem produces, grows up on the middle low-bandwidth network of representative for solving with Intemet.Streaming Media is audio frequency, video or the multimedia file by Network Transmission, and Streaming Media is not downloaded whole file before broadcast, and the data flow of Streaming Media transmits at any time at any time and plays, and some delays are just arranged when beginning.When the streaming video file transfer arrived client's computer, the partial content of this document had deposited internal memory in before playing.
The implication of Streaming Media
Stream is continuously the data of transmission, and stream can be divided into audio stream and video flowing.The characteristics of Streaming Media are instant broadcasts, do not take the client hard disk space, but require to have the support of certain network bandwidth, can cause the pause of image and sound when the network bandwidth is lower than the Streaming Media bandwidth or during network blockage.In order to reach smooth effect, adopt the compressed encoding instrument that Voice ﹠ Video is carried out compressed encoding usually, reduce audio-visual quality to reduce file, under audio-visual quality acceptable situation, guarantee the smooth and easy of stream media broadcast.In Intemet/Intranet, use the continuous real-time media of stream transmission technology to be called Streaming Media.
Three kinds of stream-type video forms
At present Intemet go up use more stream-type video form mainly be following three kinds ": the QuickTime of the RealMedia of RealNetworks company, apple computer company and the Ad-vancedStreami ngFormat of Microsoft company.
(1) the audio frequency and video compression standard formulated of RealMediaRealNetworks company is called RealMedia, it is the present multimedia application standard of quite popular cross-platform client/server structure on Intemet, it adopts audio and synchronous. and playback technology is implemented in Intranet and provides top quality multimedia with going up full bandwidth, also can the transmission rate with 28.8Kbps provide stereo and continuous videos on Intemet simultaneously.RealMedia comprises three class files:
RealAudio, RealVideo and RealFlash.RealAudio is with adopting the voice data of transmission near CD Quality, and RealVideo is used for transmitting continuous video data, and ReaiFlash then is the animated format of a kind of high compression ratio of RealNetworks company and the release of cooperation recently of Macromedia company.Special player is Realplayero.
(2) QuickTime of QuickTimeApple Computer Company is the actual industrial standard of field of digital media, can provide real-time digital information stream, workflow and file playback function by Intemet, it is made up of three different pieces: QuickTime film (Movie) file format, QuickTime medium level of abstraction and the built-in media service system of QuickTime.QuickTime movie file formal definition the standard method of storing media content, use this file format not only can store single media content (as frame of video or audio sample), and can preserve complete description this media piece; QuickTime medium level of abstraction is a kind of comprehensive media software framework, and it has defined Software tool and how application program visits the built-in media service system of QuickTime, and the key performance that how promotes QuickTime by hardware; The built-in media service system of QuickTime then can be used as the basis of SDK (Software Development Kit), and helper applications developer and user make full use of the technical advantage of QuickTime.
(3) the Advanced StreamingFormat (ASF of AdvancedStreamingFormatMicrosoft company release, advanced streaming format), be one and be independent of coded system, the multimedia technical standard of real time communication on Intemet, Microsoft company wishes the Standard File Format as all content of multimedia in the version of window in the future with ASF.The main feature of ASF comprises: relation and autgmentability etc. between this locality or network playback, open-ended medium type, parts download, telescopic medium type, the prioritization of stream, multilingual support, Independence of Environment, abundant stream.
The transmission of Streaming Media
After compression is handled look audio frequency or multimedia file is divided into some small fragments, when user side send please after, transmit these small fragments by server continuously, in real time to user side, play after user side utilizes decompression apparatus (player) to the fragment decompress(ion) that compressed and watch.Stream transmission not only makes and starts time-delay tenfold, hundred times of ground shortenings, and does not need too big buffer memory capacity.The transmission of Streaming Media in network needs the server support, and building server has two kinds of methods usually: a kind of is the common Wep server that adopts the Http agreement, and another kind is the streaming video server that adopts the RTP/RTSP agreement.The advantage of Wet server is: simple and easy, need not specific (special) requirements, and need only the relevant position that files in stream media is placed on server, the user just can visit by server.Weak point is to be unfavorable for live and to be unfavorable for safety of files.Use the advantage of streaming media server to be: can improve transmission rate, well utilize bandwidth and can realize live.
The broadcast of Streaming Media
The service routine that the broadcast of Streaming Media need be correlated with and the support Microsoft company, RealNetworks company, three families of Apple company that make software and playout software, its software requirement and paying situation are as shown in the table:
Stream media technology is applied in the content that has greatly enriched teaching courseware in the based courseware and represents form, but also comes with some shortcomings, and delay phenomenon appears in the picture of video window when the click contents menu carries out redirect; When bandwidth did not reach the minimum requirements of streaming media courseware, the courseware quality can not be satisfactory, and these problems await further solution.
Summary of the invention
The invention provides a kind of CNVS multimedia courseware fast method for preparing, solve existing multimedia courseware and occur delay phenomenon easily, technical problem such as transmission security is bad.
The technical solution adopted for the present invention to solve the technical problems is:
This CNVS multimedia courseware fast method for preparing is characterized in that step is as follows:
Step 1: analogue audio frequency and encoding video signal are produced the ASF file;
Step 2: the ASF file that the Voice ﹠ Video signal that records is produced is compiled a single ASF stream, when playing this ASF file, realize automaticallying switch;
Step 3: in ASF stream, add mark and descriptor.
Before encoding, earlier analogue audio frequency and vision signal are broadcast live in the above-mentioned steps 1.
Behind 1 pair of analogue audio frequency of above-mentioned steps and the encoding video signal, in operation sequence prompting select the filename of output and store path, file output bandwidth, look the coding of audio compression.
Analogue audio frequency in the above-mentioned steps 1 and vision signal can be avi, wav and mp3 formatted file.
Above-mentioned steps 3 descriptors can be title, author, copyright, the speed of ASF stream.
The webpage that in the above-mentioned steps 3 the PowerPoint teaching materials is sized on demand the URL type is added in the ASF stream of making, and make marks, when this ASF file of player plays, when play position has arrived specified moment of webpage, player starts the browser of Intemet automatically and is connected to the webpage of appointment, and video window can show corresponding video clip simultaneously.
Beneficial effect of the present invention is as follows:
1, manufacturing speed is fast: the teacher can oneself operate the video recording of teaching limit, limit, the PowerPoint file that cooperates teacher oneself, system generates automatically and comprises image, sound, electronic writing on blackboard at interior network or CD courseware in the video process, and Production Time is hours of instruction.Be fit to the courseware of making in enormous quantities.
2, cost of manufacture is low: owing to adopt the computer control video recording, multimedia file generates automatically, and people of teacher can finish so whole courseware development process only need be taught, and has save huge post-production troop, has also saved overspending.
3, edit easily: the courseware interface that native system is made is a form web page, can use the personnel of webpage making instrument can revise wrong content very easily and add new content.
4, provide Page Template, engineering template, three kinds of template notions of object gang form, and prefabricated each class template of some.By the use of object gang form, make the user possess the ability of expanding library of object voluntarily.
CNVS multimedia courseware quick Fabrication system is the class preparation system that aims at the e-learning system development, is mainly used in classroom instruction.The effect of this system in mini-system and large scale system is all fine.The stability of system and reliability can both reach designing requirement.Teacher's classroom instruction overall process synchronously can be noted in real time by this system, and be generated the courseware that can be used for the network program request at once.The general staff just can use go out the very impressive 3 panes teaching courseware that comprises contents such as video, audio frequency, animation, picture, literal.This courseware is placed on the server just can realizes the online classes autonomous learning.This system is the high-tech technology that a kind of courseware development cycle is extremely short, take effect and be exceedingly fast.Be particularly suitable for the Web-based instruction, remote teaching, elective course teaching.To all kinds of network schools, TV university and the prominent teacher resource-sharing of giving lessons, will play a positive role, the multimedia courseware that can be widely used in school and unit is made the field.
Embodiment
Embodiment, the present invention mainly adopt WindowsMediaTechnology fabrication techniques multimedia courseware.WindowsMedia Technology is made up of MediaTools, MediaServer and MediaPlayer three parts.
The making step of this CNVS multimedia courseware fast method for preparing is as follows:
Step 1: the tool software MediaEncoder that is provided by MediaTools finishes.Main task is that analogue audio frequency and encoding video signal are produced the ASF file.In cataloged procedure, need the support of sound card, video frequency collection card.The MediaEncoder instrument at first is installed on machine, and start this software, select self-defined setting, click " OK ", in the dialog box that occurs, two option live source options and avi/wav/mp3 option are arranged, live source option can be broadcast live, and the avi/wav/mp3 option can compress existing avi file, wav file and be processed into the asf file.Can select livesource option or avi/mav/mp3 option as required when making courseware, then in operation sequence prompting select the filename of output and store path, file output bandwidth, look the coding of audio compression.Select WindowsMe-diaAudioV2 in the CodO hurdle in the audio frequency frame.Select MicrosoftMpeg4 CodecV3 in the Cod hurdle in video frame.The ASF file has just tentatively been made.
Step 2: the aid MediaAuthor by MediaEneoder finishes.The ASF file that the Voice ﹠ Video signal that records is produced is compiled a single ASF stream, when playing this ASF file, realize automaticallying switch;
The instrument WindowsMediaASFIndexer that the ASF file is carried out editorial management that step 3:MediaTools provides finishes, and adds the descriptors such as title, author, copyright, speed of mark and ASF stream in ASF stream.The webpage that the PowerPoint teaching materials is sized on demand the URL type is added in the ASF stream of making, and make marks, when this ASF file of player plays, when play position has arrived specified moment of webpage, player starts the browser of Intemet automatically and is connected to the webpage of appointment, and video window can show corresponding video clip simultaneously.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. CNVS multimedia courseware fast method for preparing is characterized in that step is as follows:
Step 1: analogue audio frequency and encoding video signal are produced the ASF file;
Step 2: the ASF file that the Voice ﹠ Video signal that records is produced is compiled a single ASF stream, when playing this ASF file, realize automaticallying switch;
Step 3: in ASF stream, add mark and descriptor.
2. CNVS multimedia courseware fast method for preparing according to claim 1 is characterized in that: earlier analogue audio frequency and vision signal are broadcast live before encoding in the above-mentioned steps 1.
3. CNVS multimedia courseware fast method for preparing according to claim 1, it is characterized in that: behind 1 pair of analogue audio frequency of above-mentioned steps and the encoding video signal, in operation sequence prompting select the filename of output and store path, file output bandwidth, look the coding of audio compression.
4. CNVS multimedia courseware fast method for preparing according to claim 1 is characterized in that: analogue audio frequency in the above-mentioned steps 1 and vision signal are avi, wav and mp3 formatted file.
5. CNVS multimedia courseware fast method for preparing according to claim 1 is characterized in that: above-mentioned steps 3 descriptors are title, author, copyright, the speed of ASF stream.
6. CNVS multimedia courseware fast method for preparing according to claim 1, it is characterized in that: the webpage that in the above-mentioned steps 3 the PowerPoint teaching materials is sized on demand the URL type is added in the ASF stream of making, and make marks, when this ASF file of player plays, when play position has arrived specified moment of webpage, player starts the browser of Intemet automatically and is connected to the webpage of appointment, and video window can show corresponding video clip simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910086321 CN101924932A (en) | 2009-06-10 | 2009-06-10 | Rapid making method of CNVS multimedia courseware |
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| CN 200910086321 CN101924932A (en) | 2009-06-10 | 2009-06-10 | Rapid making method of CNVS multimedia courseware |
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| CN101924932A true CN101924932A (en) | 2010-12-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404575A (en) * | 2011-11-30 | 2012-04-04 | 江苏奇异点网络有限公司 | Courseware-oriented video compression coding method |
| CN103514770A (en) * | 2012-06-15 | 2014-01-15 | 上海蓝卓教育信息科技有限公司 | Online courseware making system |
| WO2014153682A1 (en) * | 2013-03-26 | 2014-10-02 | Yan Jian | Panorama mode online learning system and pen dedicated for learning system |
| CN105047025A (en) * | 2015-07-10 | 2015-11-11 | 上海爱数软件有限公司 | Rapid manufacturing method for mobile learning courseware |
| CN107133050A (en) * | 2017-05-23 | 2017-09-05 | 北京网梯科技发展有限公司 | Network interactive Courseware Development method and apparatus based on web3D |
| CN115134612A (en) * | 2021-03-22 | 2022-09-30 | 玛克多股份有限公司 | Online live broadcast teaching system |
-
2009
- 2009-06-10 CN CN 200910086321 patent/CN101924932A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404575A (en) * | 2011-11-30 | 2012-04-04 | 江苏奇异点网络有限公司 | Courseware-oriented video compression coding method |
| CN103514770A (en) * | 2012-06-15 | 2014-01-15 | 上海蓝卓教育信息科技有限公司 | Online courseware making system |
| WO2014153682A1 (en) * | 2013-03-26 | 2014-10-02 | Yan Jian | Panorama mode online learning system and pen dedicated for learning system |
| CN105047025A (en) * | 2015-07-10 | 2015-11-11 | 上海爱数软件有限公司 | Rapid manufacturing method for mobile learning courseware |
| CN107133050A (en) * | 2017-05-23 | 2017-09-05 | 北京网梯科技发展有限公司 | Network interactive Courseware Development method and apparatus based on web3D |
| CN115134612A (en) * | 2021-03-22 | 2022-09-30 | 玛克多股份有限公司 | Online live broadcast teaching system |
| CN115134612B (en) * | 2021-03-22 | 2023-12-29 | 玛克多股份有限公司 | Online live broadcast teaching system |
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Application publication date: 20101222 |