CN102685430A - Method for achieving video real-time output through 1394 connection line - Google Patents
Method for achieving video real-time output through 1394 connection line Download PDFInfo
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- CN102685430A CN102685430A CN2011100669534A CN201110066953A CN102685430A CN 102685430 A CN102685430 A CN 102685430A CN 2011100669534 A CN2011100669534 A CN 2011100669534A CN 201110066953 A CN201110066953 A CN 201110066953A CN 102685430 A CN102685430 A CN 102685430A
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Abstract
An embodiment of the invention discloses a method for achieving video real-time output through a 1394 connection line. The method is characterized by comprising starting a control order which contains a clock function; starting a video and audio data sending thread with a timestamp through the obtained clock function; sending video and audio data from a transcribing enter point; and according to the control order, enabling a videotape recorder (VTR) device to receive video and audio signals and play or store the video and audio signals in real time. By means of the method for achieving video real-time output through the 1394 connection line, the 1394 connection line and a 1394 data conversion module are utilized to achieve playing of videos. Under the condition of plugging an input/output (I/O) card on a playing device, real-time playing or storage of the videos processed by non-linear editing can be achieved.
Description
Technical field
The invention belongs to and look sound output field, relate to a kind of method of real-time video output, relate in particular to a kind of method that 1394 connecting lines are realized real-time video output of passing through.
Background technology
Existing real-time video output is play and must on playback equipment, be plugged the realization of video/audio transaction card.The main video frequency collection card that uses on the existing market, " Video Capture Card ", its function be with video signal collective in computer, be kept on the hard disk with the form of data file.It is that we carry out the requisite hardware device of Video processing; Through it; We just can dump to the vision signal that video camera is taken the computer from camera tape; Utilize relevant video editing software; Digitized vision signal is carried out later stage compilation handle, filter ytterbium, captions and audio, transitions be set and add various special video effects or the like, will edit the forms such as VCD, DVD and web stream medium that the vision signal of accomplishing converts standard at last, convenient propagation such as shearing picture, interpolation.
Video (Video) is the mixed-media that several rest images (picture frame) and continuous audio-frequency information are synchronized with the movement on time shaft, and multiple image changes in time and produces kinesthesia, so video also is called as moving image.Storage according to video is different with processing mode, can be divided into two kinds of analog video and digital videos.
Video acquisition is exactly that the analog signal of video source is transformed into digital signal (promptly 0 and 1) through processing, and these digital informations are stored in the process on the computer hard disc.This analog/digital transformation is what to carry out through the acquisition chip on the video frequency collection card.
Can receive the analog video signal from video inputs through video frequency collection card on computers, digital signal is gathered, is quantized into to this signal, compressed encoding becomes digital video then.Most of video cards all possess the function of hardware-compressed, when gathering vision signal, at first on card, vision signal are compressed, and then are sent to the video data of compression on the main frame through pci interface.But general PC video frequency collection card adopts the interior compress algorithm of frame to become digitized video storage the file of broadcast format.
Yet on playback equipment, plug the cost height very of video frequency collection card, the present invention has saved the cost that plugs video frequency collection card through using the direct outputting video signal of 1394 connecting lines to playback equipment.
Usually all be provided with 1394 interfaces in the computer frequently-used data coffret; A lot of data transmission sets all are through this interface and computer exchange data information; Therefore data transmission bauds just becomes the primary study content; So the data transmission standard of these two interfaces particularly is referred to as 1394 capture cards of fire-wire interfaces, just becomes the main application interface of early time data transmission equipment.1394 interfaces are a kind of common numeric string connecting ports, and the IEEE1394 interface has two types on 6 pins and 4 pins.The interface of 6 dihedrals is 6 pins, and small-sized tetragonal interface then is 4 pins.
The IEEE1394 interface is also claimed the Firewire fire-wire interfaces, is the sata standard of Apple's exploitation.The same with USB, IEEE1394 also supports the peripheral hardware hot plug, can be peripheral hardware power supply is provided, and has saved the power supply that peripheral hardware carries, and can connect a plurality of distinct devices, supports synchronous data transmission.Because it supports plug and play, and is easy-to-use as USB, reduce user's support demand.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind of method that 1394 connecting lines are realized real-time video output of passing through, and is used under the situation that does not plug the I/O card, realizes real-time play.
For achieving the above object, the embodiment of the invention provides a kind of method that 1394 connecting lines are realized real-time video output of passing through, and it is characterized in that, comprising:
The start-up control order, said control control command comprises clock function;
Have the timestamp video/audio through the Clock enable that obtains and send thread;
Begin to send video/audio from recording into point;
According to control command, VTR equipment receives video/audio signal, and it is carried out real-time play or preservation.
Technical scheme of the present invention has the following advantages, and the present invention realizes the broadcast of video through 1394 connecting lines, 1394 data conversion modules, and need on playback equipment, not plug the I/O card, just can realize real-time play or preservation, effectively reduces cost.
Description of drawings
Technical scheme for the clearer explanation embodiment of the invention; The accompanying drawing of required use is done simple introduction in will describing embodiment below; Conspicuous, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of method of passing through the output of 1394 connecting lines realization real-time video in the embodiment of the invention;
Fig. 2 is the data transmission scheme of the 1394 connecting line real-time videos output in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention has proposed a kind of method that 1394 connecting lines are realized real-time video output of passing through; Can be implemented in playback equipment does not install under the situation of video/audio transaction card; Through 1394 connecting lines and 1394 data conversion modules, the real-time video of non-linear editing is outputed to playback equipment directly play.
A kind of method of passing through the output of 1394 connecting lines realization real-time video of the present invention comprises: one group of control system, 1394 connecting lines, 1394 data conversion modules and playback equipment that is installed on the non-linear editing.Said one group of control system that is installed on the non-linear editing is used for the video of non-linear editing software is carried out Play Control; 1394 connecting lines are used for the digital video/audio transfer of data that edits to 1394 data conversion modules; 1394 data conversion modules, being used for the digital video/audio data transaction that receives is analog video, and sends to playback equipment; Playback equipment is used for the analog video that receives is carried out real-time play.
One end of 1394 connecting lines links with non-linear editing through serial ports, and the other end is connected with 1394 data conversion modules, and 1394 data conversion modules are connected with playback equipment.
Below in conjunction with accompanying drawing 1 and specific embodiment a kind of method through the output of 1394 connecting lines realization real-time video that the embodiment of the invention provides is elaborated.
The embodiment of the invention provides a kind of method that 1394 connecting lines are realized real-time video output of passing through, and is as shown in Figure 1, comprising:
Step S101, the order of nonlinear editing system start-up control, said control control command comprises clock function.
Through clock function VTR equipment is carried out early warning, remind VTR equipment to do the preparation of video/audio transmission.
Step S102 has the timestamp video/audio through the Clock enable that obtains and sends thread.
On non-linear editing software, video resource is carried out various editors, the non-volume control system that is installed on the non-linear editing sends to 1394 connecting lines with the vision signal that edits through serial ports.
Step S103 begins to send video/audio from recording into point.
Step S104 sends vision signal to 1394 data conversion modules through 1394 connecting lines, and the video/audio signal that said 1394 connecting lines are used to transmit is a digital signal.
Step S105,1394 data conversion modules are converted into analog signal with digital signal after receiving and looking audio digital signals, and send to the VTR playback equipment.
Step S106, according to control command, VTR equipment receives analog video, and it is carried out real-time play or preservation.
Control command comprises the clock order, realizes real-time play or storage to video/audio signal.
The present invention realizes the broadcast of video through 1394 connecting lines, 1394 data conversion modules, and need on playback equipment, not plug the video/audio transaction card, just can realize real-time play to the video among the editor.
As shown in Figure 2; Be the data transmission scheme of the output of 1394 connecting line real-time videos in the embodiment of the invention, in the synthetic process of video and audio-editing, send to 1394 connecting lines in real time through serial ports editing synthetic video/audio; Send digital video to 1394 data conversion modules through 1394 connecting lines; Be converted into analog signal and finally on monitor, play, thereby the output of audio frequency is looked real-time in realization, and the audio frequency of playing of looking is controlled through control system.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize through hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding; Technical scheme of the present invention can be come out with the embodied of software product, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk; Portable hard drive etc.) in; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (4)
1. the method through the output of 1394 connecting lines realization real-time video is characterized in that, comprising:
The start-up control order, said control control command comprises clock function;
Have the timestamp video/audio through the Clock enable that obtains and send thread;
Begin to send video/audio from recording into point;
According to control command, VTR equipment receives video/audio signal, and it is carried out real-time play or preservation.
2. a kind of according to claim 1 method of passing through the output of 1394 connecting lines realization real-time video is characterized in that said clock function carries out early warning to VTR equipment, reminds VTR equipment to do the preparation of video/audio transmission.
3. like the said a kind of method that 1394 connecting lines are realized real-time video output of passing through of claim 2, it is characterized in that, saidly begin to send video/audio, specifically comprise from recording into point:
Send vision signal to 1394 data conversion modules through 1394 connecting lines;
1394 data conversion modules are converted into analog signal with digital signal after receiving and looking audio digital signals, and send to the VTR playback equipment.
4. like the said a kind of method that 1394 connecting lines are realized real-time video output of passing through of claim 3, it is characterized in that it is digital video that 1394 connecting lines of telling are used for transmission of video.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100669534A CN102685430A (en) | 2011-03-18 | 2011-03-18 | Method for achieving video real-time output through 1394 connection line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100669534A CN102685430A (en) | 2011-03-18 | 2011-03-18 | Method for achieving video real-time output through 1394 connection line |
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| CN102685430A true CN102685430A (en) | 2012-09-19 |
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| CN2011100669534A Pending CN102685430A (en) | 2011-03-18 | 2011-03-18 | Method for achieving video real-time output through 1394 connection line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095367A1 (en) * | 2014-12-14 | 2016-06-23 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
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| US20020031333A1 (en) * | 1997-09-30 | 2002-03-14 | Yoshizumi Mano | On-the fly video editing device for capturing and storing images from a video stream during playback for subsequent editing and recording |
| CN1812590A (en) * | 2004-12-27 | 2006-08-02 | 株式会社东芝 | Signal processing apparatus and stream processing method |
| CN201156418Y (en) * | 2008-01-15 | 2008-11-26 | 上海敏速软件技术有限公司 | High-resolution player |
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2011
- 2011-03-18 CN CN2011100669534A patent/CN102685430A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031333A1 (en) * | 1997-09-30 | 2002-03-14 | Yoshizumi Mano | On-the fly video editing device for capturing and storing images from a video stream during playback for subsequent editing and recording |
| CN1812590A (en) * | 2004-12-27 | 2006-08-02 | 株式会社东芝 | Signal processing apparatus and stream processing method |
| CN201156418Y (en) * | 2008-01-15 | 2008-11-26 | 上海敏速软件技术有限公司 | High-resolution player |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095367A1 (en) * | 2014-12-14 | 2016-06-23 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
| US9973728B2 (en) | 2014-12-14 | 2018-05-15 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
| US20180227539A1 (en) | 2014-12-14 | 2018-08-09 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
| US10284808B2 (en) | 2014-12-14 | 2019-05-07 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
| US10567700B2 (en) | 2014-12-14 | 2020-02-18 | SZ DJI Technology Co., Ltd. | Methods and systems of video processing |
| US10771734B2 (en) | 2014-12-14 | 2020-09-08 | SZ DJI Technology Co., Ltd. | System and method for supporting selective backtracking data recording |
| US11095847B2 (en) | 2014-12-14 | 2021-08-17 | SZ DJI Technology Co., Ltd. | Methods and systems of video processing |
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Application publication date: 20120919 |