CN1777265A - Image-sound synchronous recording and playing method - Google Patents
Image-sound synchronous recording and playing method Download PDFInfo
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- CN1777265A CN1777265A CN 200510028967 CN200510028967A CN1777265A CN 1777265 A CN1777265 A CN 1777265A CN 200510028967 CN200510028967 CN 200510028967 CN 200510028967 A CN200510028967 A CN 200510028967A CN 1777265 A CN1777265 A CN 1777265A
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Abstract
This invention discloses a method for synchronized recording of image and sound. In this method, the video file and the audio file are recorded simultaneously, and time markers for each frame of video images are defined; after recording is finished, the video file and the audio file are merged into a single image-sound file. This invention also discloses a playing method for synchronized image and sound. In the method, first, read the video information and the sound data from the image-sound file, the one above; play the video images in the video information mentioned above and the audio data simultaneously, and set time markers during playing; contrast the time marker with the clock marker in the video information to determine which video image to be played. This invention adds the audio support to silent video and ensures the combination of image and sound, and the compatibility with the current video format.
Description
Technical field
The present invention relates to a kind of multi-media recording and player method, particularly a kind of image-sound synchronous recording and player method.
Background technology
Current multimedia technology is used very extensive in field of wireless communication, many functions such as the tinkle of bells, MP3, camera, shooting, FM frequency modulation are applied in the mobile phone products.In some practical application,, in using, camera function can only realize recording and playing of noiseless MJPEG owing to be subjected to the restriction of platform or Driver.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, a kind of image-sound synchronous recording method and player method that can carry out Synchronous Processing in video record and broadcast to audio frequency is provided.
The objective of the invention is to be achieved through the following technical solutions:
A kind of image-sound synchronous recording method, in the method: simultaneously recorded video file and audio file, and the time tag of every frame video image is set; Record finish after, with the synthetic audio/video file of this video file and this audio file.
Wherein, carry out following operation in described recorded video file process: create video file, the file header information of this video file of initialization writes at least one frame video information in this video file, upgrade the file header information of this video file then.
Wherein, in described recording audio file process, carry out following operation: create audio file, in this audio file, write voice data, and write down the length information of this audio file.
Wherein, in described building-up process, carry out following operation: in this video file, write the voice data in this audio file, and in the file header information of this video file, add the length information of described voice data, and form described audio/video file, delete this audio file finishing after.
Wherein, the file header information of this video file comprises: the frame number of video information, video data size.
Wherein, described video information comprises: the time tag of the video image of present frame, data length and present frame.
Wherein, described video file is the MJPEG form, and described audio file is the AMR form.
Wherein, the unit of this time tag is second, and it upgraded once every one second.
Technical scheme of the present invention also comprises a kind of audio-visual synchronous broadcast method, and in this method: read video information and voice data in the audio/video file, this audio/video file is the described audio/video file of claim 1; Play the video image in the described video information, play this voice data simultaneously, and the timing sign is set in playing process, relatively the definite video image that will play of the time tag in this timing sign and the video information.
Wherein, the length information according to the described voice data in the file header information of this audio/video file reads described voice data.
Wherein, the unit of described timing sign is second, and it upgraded once every one second.
Wherein, in playing process, whether the time tag of judging the current video image that reads is greater than the timing sign, if then wait if not, is then carried out the display video image operation.
Wherein, in the display image operation, carry out following steps::
1) judge that whether this timing sign upgrades, if this timing sign upgrades, then carry out step 2), if this timing sign does not upgrade, then carry out step 4);
2) judge this timing sign whether greater than the time tag of the described current video image that reads, if, then carry out step 3), if not, then carry out step 4);
3) abandon the current video image that reads, read the next frame video information;
4) judge and to have read the video information frame number, if not, then show this video image, if then stop playing whether greater than the frame number of the video information that writes down in this audio/video file.
Wherein, judge by timing sign updating mark is set whether this timing sign upgrades, this timing sign updating mark is a Boolean type variable, and its initial value is false, carrying out describedly when abandoning the current video image step that reads, the value that this timing identification renewal sign is set is for false.
Positive progressive effect of the present invention is: on the basis of noiseless video, add the support of audio frequency, realize audio-visual synthesizing, and can with existing video format compatibility.
Description of drawings
Fig. 1 is the process schematic diagram of first embodiment of the invention.
Fig. 2 is the process schematic diagram of second embodiment of the invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
First embodiment
As shown in Figure 1,
A kind of image-sound synchronous recording method, it is recorded video file and audio file simultaneously, and the time tag of every frame video image is set, record finish after, with this video file and the synthetic audio/video file of this audio file.Which time zone this time tag specifically is in order to write down every frame video image.
This method comprises the steps:
Second embodiment
The broadcast of audio recording time and reproduction time equivalence and may command video can be play the back simultaneously at video and audio frequency the playing process of video is carried out specific processing according to relevant information, with realize effectively each other synchronously.
As shown in Figure 2, a kind of audio-visual synchronous broadcast method, in this method: read video information and voice data in the audio/video file, this audio/video file is the audio/video file of stating described in first embodiment; Play the video image in the described video information, play this voice data simultaneously, and the timing sign is set in playing process, relatively the definite video image that will play of the time tag in this timing sign and the video information.
This method comprises the steps:
Step 210, from this audio/video file, read file header information, and read described voice data by the length of the described voice data in this document header, be provided with and the described timing sign of initialization, the unit of this timing sign is second, is provided with and a timing sign of initialization updating mark, it can be the Boolean type variable, initial value is false, is provided with and one of initialization reading images information frame number, and its initial value is zero;
Step 220, displaying video image, playing audio-fequency data simultaneously, can utilize this video image of existing device plays and this voice data, and begin to upgrade described timing sign, and can utilize an existing second timer to upgrade this timing sign, it upgraded once described timing sign every one second;
Whether step 230, the time tag of judging the present frame video information read greater than the timing sign, if, illustrate that then video playback is too fast, carry out circular wait, if not, then carry out step 240, promptly begin to carry out the display image operation;
Step 240 reads current frame video image, and upgrades the described information of reading images frame number, whenever reads a frame image information, and this is reading images information frame number increase by;
Step 250 judges whether this timing sign updating mark is true, if be true, represents that then this timing sign upgrades, carry out step 260, if be not true, is vacation, then carry out step 280;
Whether step 260 judges this timing sign greater than the described current time tag that reads frame video image, if, represent that then video playback is slow excessively, carry out step 270, if not, then carry out step 280;
Step 270 abandons the current video image that reads, and reads the next frame video information, and this timing sign updating mark is set for false, forwards step 230 to;
Step 280 is then judged and has been read the video information frame number whether greater than the frame number of the video information that writes down in this audio/video file, if not, then carry out step 290, if, then finish, promptly stop playing;
Step 290 shows this current frame video image and forwards step 230 to.
When this second timer upgrades described timing sign, the value of this timing sign updating mark is made as very.
Above-mentioned first, second embodiment can be applicable on the existing hardware device, as can be used for the MTK platform, be applicable to the platform by digital signal processor (DSP) driving sensor (Sensor) such as M1 and M6217, be suitable for the combination of all digital signal processors of this platform (DSP), transducer (Sensor) and LCD (LCD).On this platform, thereby can call DSP Driver interface function finishes every frame coding and carries out video image and record, the audio recording function that can call the MTK system provides carries out voice data and records, the demonstration of video image can be called DSP Driver interface function and be finished, the audio recording function that the broadcast of voice data can be called the MTK system to be provided is finished, and this first and second timer timer that all can adopt this internal system to provide.
The present invention also is applied to have the hardware platform of identical function, and it all within the present invention's scope required for protection, does not repeat them here.
Claims (14)
1, a kind of image-sound synchronous recording method is characterized in that, in this method: and simultaneously recorded video file and audio file, and the time tag of every frame video image is set; Record finish after, with the synthetic audio/video file of this video file and this audio file.
2, image-sound synchronous recording method according to claim 1, it is characterized in that, in described recorded video file process, carry out following operation: create video file, the file header information of this video file of initialization, in this video file, write at least one frame video information, upgrade the file header information of this video file then.
3, image-sound synchronous recording method according to claim 2 is characterized in that, carries out following operation in described recording audio file process: create audio file, write voice data in this audio file, and write down the length information of this voice data.
4, image-sound synchronous recording method according to claim 3, it is characterized in that, in described building-up process, carry out following operation: in this video file, write the voice data in this audio file, and in the file header information of this video file, add the length information of described voice data, form described audio/video file, this audio file of deletion after finishing.
5, image-sound synchronous recording method according to claim 4 is characterized in that, the file header information of this video file comprises: the frame number of video information, video data size.
6, image-sound synchronous recording method according to claim 5 is characterized in that, described video information comprises: the time tag of the video image of present frame, data length and present frame.
7, image-sound synchronous recording method according to claim 6 is characterized in that, the form of described video file is the MJPEG form, and the form of described audio file is the AMR form.
8, image-sound synchronous recording method according to claim 7 is characterized in that, the unit of this time tag is second, and it upgraded once every one second.
9, a kind of audio-visual synchronous broadcast method is characterized in that, in this method: read video information and voice data in the audio/video file, this audio/video file is the described audio/video file of claim 1; Play the video image in the described video information, play this voice data simultaneously, and the timing sign is set in playing process, relatively the definite video image that will play of the time tag in this timing sign and the video information.
10, audio-visual synchronous broadcast method according to claim 9 is characterized in that, reads described voice data according to the length information of the described voice data in the file header information of this audio/video file.
11, audio-visual synchronous broadcast method according to claim 10 is characterized in that, the unit of described timing sign is second, and it upgraded once every one second.
12, audio-visual synchronous broadcast method according to claim 11 is characterized in that, in playing process, whether the time tag of judging the current video image that reads is greater than the timing sign: if then wait for; If not, then carry out the display video image operation.
13, audio-visual synchronous broadcast method according to claim 12 is characterized in that, carries out following steps in the display image operation:
1) judge that whether this timing sign upgrades, if this timing sign upgrades, then carry out step 2), if this timing sign does not upgrade, then carry out step 4);
2) judge this timing sign whether greater than the time tag of the described current video image that reads, if, then carry out step 3), if not, then carry out step 4);
3) abandon the current video image that reads, read the next frame video information;
4) judge and to have read the video information frame number, if not, then show this video image, if then stop playing whether greater than the frame number of the video information that writes down in this audio/video file.
14, audio-visual synchronous broadcast method according to claim 13, it is characterized in that, by being set, timing sign updating mark judges whether this timing sign upgrades, this timing sign updating mark is a Boolean type variable, its value has been upgraded for this timing sign of true respresentation, and its value represents then that for vacation the timing sign does not upgrade.
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| CNB2005100289671A CN100409681C (en) | 2005-08-19 | 2005-08-19 | Image-sound synchronous recording and playing method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101557474B (en) * | 2008-05-28 | 2010-11-10 | 北京同步科技有限公司 | Method for realizing time point alignment of video files recorded by multi-channel recording elements |
| CN101118776B (en) * | 2007-08-21 | 2012-09-05 | 中国科学院计算技术研究所 | Method, system and device for realizing audio and video data synchronizing |
| CN104219538A (en) * | 2014-09-15 | 2014-12-17 | 深圳市云宙多媒体技术有限公司 | Real-time acquiring and uploading and data processing method and system for audio and video |
| CN101645967B (en) * | 2009-05-14 | 2015-03-04 | 上海闻泰电子科技有限公司 | Mobile terminal for processing multimedia data in user-defined format and realization method thereof |
| CN104735412A (en) * | 2015-03-11 | 2015-06-24 | 大连理工大学 | Audio and video synthesizing and synchronous playing method for subway passenger emergency communication |
| CN105052163A (en) * | 2014-01-20 | 2015-11-11 | 松下知识产权经营株式会社 | Reproduction device and data reproduction method |
| CN111356003A (en) * | 2020-03-11 | 2020-06-30 | 北京文香信息技术有限公司 | Data writing method, system and terminal equipment |
| CN111354384A (en) * | 2020-02-27 | 2020-06-30 | 北京奇艺世纪科技有限公司 | GIF picture generation method, playing method and device and electronic equipment |
| CN112423103A (en) * | 2020-09-02 | 2021-02-26 | 一可科技有限公司 | Method for merging audio file and video file, playing method and device |
| CN112995720A (en) * | 2019-12-16 | 2021-06-18 | 成都鼎桥通信技术有限公司 | Audio and video synchronization method and device |
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| JP2002259298A (en) * | 2001-03-02 | 2002-09-13 | Square Co Ltd | Transmitting method for electronic mail, information processor, recording medium, and computer program |
| CN1287554C (en) * | 2001-08-10 | 2006-11-29 | 旭联科技股份有限公司 | Audio and video teaching material recording and playback system and method |
| CN1436001A (en) * | 2002-01-28 | 2003-08-13 | 北京华诺信息技术有限公司 | Method for synchronizing video with audio in decoding system |
| US7315622B2 (en) * | 2002-06-27 | 2008-01-01 | Nxp B.V. | Robust method for achieving audio/video synchronization in MPEG decoders in personal video recording applications |
| JP4271195B2 (en) * | 2003-10-16 | 2009-06-03 | パナソニック株式会社 | Video / audio recording / reproducing apparatus, video / audio recording method, and video / audio reproducing method |
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2005
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118776B (en) * | 2007-08-21 | 2012-09-05 | 中国科学院计算技术研究所 | Method, system and device for realizing audio and video data synchronizing |
| CN101557474B (en) * | 2008-05-28 | 2010-11-10 | 北京同步科技有限公司 | Method for realizing time point alignment of video files recorded by multi-channel recording elements |
| CN101645967B (en) * | 2009-05-14 | 2015-03-04 | 上海闻泰电子科技有限公司 | Mobile terminal for processing multimedia data in user-defined format and realization method thereof |
| CN105052163A (en) * | 2014-01-20 | 2015-11-11 | 松下知识产权经营株式会社 | Reproduction device and data reproduction method |
| CN104219538A (en) * | 2014-09-15 | 2014-12-17 | 深圳市云宙多媒体技术有限公司 | Real-time acquiring and uploading and data processing method and system for audio and video |
| CN104219538B (en) * | 2014-09-15 | 2018-01-16 | 深圳市云宙多媒体技术有限公司 | A kind of audio frequency and video gather upload and data processing method and system in real time |
| CN104735412B (en) * | 2015-03-11 | 2017-08-01 | 大连理工大学 | A kind of audio frequency and video synthesis of Metro Passenger emergency communication and synchronous broadcast method |
| CN104735412A (en) * | 2015-03-11 | 2015-06-24 | 大连理工大学 | Audio and video synthesizing and synchronous playing method for subway passenger emergency communication |
| CN112995720A (en) * | 2019-12-16 | 2021-06-18 | 成都鼎桥通信技术有限公司 | Audio and video synchronization method and device |
| CN112995720B (en) * | 2019-12-16 | 2022-11-18 | 成都鼎桥通信技术有限公司 | Audio and video synchronization method and device |
| CN111354384A (en) * | 2020-02-27 | 2020-06-30 | 北京奇艺世纪科技有限公司 | GIF picture generation method, playing method and device and electronic equipment |
| CN111356003A (en) * | 2020-03-11 | 2020-06-30 | 北京文香信息技术有限公司 | Data writing method, system and terminal equipment |
| CN111356003B (en) * | 2020-03-11 | 2022-03-29 | 安徽文香科技有限公司 | Data writing method, system and terminal equipment |
| CN112423103A (en) * | 2020-09-02 | 2021-02-26 | 一可科技有限公司 | Method for merging audio file and video file, playing method and device |
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|---|---|
| CN100409681C (en) | 2008-08-06 |
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Owner name: SHANGHAI CHENXING SIM TECHNOLOGY ELECTRONIC TECHNO Free format text: FORMER NAME: SHANGHAI CHENXING ELECTRONICS SCIENCE + TECHNOLOGY CO., LTD. |
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