CN106658056B - Nonlinear editing system, device and method - Google Patents
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Abstract
The embodiment of the application provides a nonlinear editing system, a nonlinear editing device and a nonlinear editing method, which can perform frame extraction processing on an image in an interlaced scanning mode to form image information in a progressive scanning mode; issuing a display frequency adjusting instruction to a display card according to the frame rate of the image information; transmitting the image information to the display card; and the display card transmits the image information to the displayer for previewing through a high-definition multimedia interface (HDMI) according to the display frequency adjusting instruction. The display can also realize the preview function of nonlinear editing without configuring a monitor and a professional board card, so that the system configuration cost is reduced; and the problems of image quality reduction and time delay caused by repeated decompression and compression during transmission through the SDI interface are also avoided.
Description
Technical Field
The present application relates to non-linear editing technologies, and in particular, to a non-linear editing system, device, and method.
Background
In the current 4K-based nonlinear editing system, 2 displays and 1 monitor are generally required to be configured for 1 nonlinear editing station. Wherein, 1 display is used for selecting materials, the other 1 display is used for editing time lines of the materials, and the monitor is used for previewing editing effects to confirm the final output picture.
When the image effect of the nonlinear editing is previewed, a unit of the nonlinear editing system transmits a baseband signal of a transmission image to a professional board card, and the professional board card converts the baseband signal into an SDI signal and then transmits the SDI signal to a monitor. That is, a professional board needs to be installed on the PCI slot to output the SDI signal to the monitor.
The inventor believes that, because the interface of the SDI signal is a digital component serial interface, compressed digital signals cannot be directly transmitted, compressed materials recorded by some digital video recorders, hard disks and other devices can be transported through the SDI interface only after being decompressed, but such compression and decompression processes inevitably cause the degradation of image quality and the increase of delay time.
In addition, in the non-linear editing process, interlaced signals (i.e., materials) of 50i or 60i are processed by the professional board card, and the display has only a progressive scanning function, so that the editing effect can be previewed only by a monitor with the interlaced scanning function. But the configuration cost of the non-linear editing system is high because the monitor is expensive.
Meanwhile, the display card cannot adjust the display frequency at any time to adapt to the image content to be displayed currently, and the efficiency of the frame rate matching process is low.
Disclosure of Invention
The embodiment of the application provides a nonlinear editing system, a nonlinear editing device and a nonlinear editing method, which can efficiently finish nonlinear editing work under the condition of not configuring a monitor.
According to an aspect of an embodiment of the present application, there is provided a nonlinear editing system including: the device comprises a nonlinear editing unit, a display card and a display; the nonlinear editing unit is used for performing frame extraction processing on the image in the interlaced scanning mode to form image information in the progressive scanning mode; issuing a display frequency adjusting instruction to the display card according to the frame rate of the image information; transmitting the image information to the display card; and the display card transmits the image information to the displayer for previewing through a high-definition multimedia interface (HDMI) according to the display frequency adjusting instruction.
According to another aspect of the embodiments of the present application, there is also provided a nonlinear editing unit including:
the conversion module is used for performing frame extraction on the image in the interlaced scanning mode to form image information in the progressive scanning mode; a frame rate obtaining module, configured to obtain a frame rate in the image information in the progressive scanning mode; the frame rate matching module is used for selecting matched display frequency according to the frame rate; the first receiving module is used for receiving display frequency information sent by the display card; the first sending module is used for sending a display frequency adjusting instruction to the display card when the display frequency of the display card is different from the matched display frequency; and transmitting the image information to the display card.
According to another aspect of the embodiments of the present application, there is also provided a display card for non-linear editing, including: the information receiving module is used for receiving the instruction of adjusting the display frequency and receiving the image information through the bus; the execution module is used for executing the display frequency adjusting instruction and adjusting the display frequency to the frequency required by the instruction; and the information sending module is used for transmitting the image information to a display for previewing through a high-definition multimedia interface (HDMI) according to the adjusted display frequency.
According to another aspect of the embodiments of the present application, there is also provided a nonlinear editing display method, including: receiving image information; receiving a display frequency adjusting instruction issued according to the frame rate of the image information; and executing the display frequency instruction, and transmitting the image information through a high-definition multimedia interface (HDMI) for previewing according to the adjusted display frequency.
According to another aspect of the embodiments of the present application, there is also provided a nonlinear editing processing method, including: performing frame extraction processing on the image in an interlaced scanning mode to form image information in a progressive scanning mode; acquiring a frame rate in the image information in the progressive scanning mode; selecting a matched display frequency according to the frame rate; when the display frequency of the display card is different from the matched display frequency, issuing a display frequency adjusting instruction; and sending the image information.
According to the scheme of the embodiment of the application, the image information is transmitted to the display through the high-definition multimedia interface HDMI through the display card, so that the display can also realize the preview function of nonlinear editing (the preview function of the monitor is realized), the monitor and a professional board card are not required to be configured, and the system configuration cost is reduced; the problems of image quality reduction and time delay caused by repeated decompression and compression during transmission through the SDI interface are also avoided; and the display card can adjust the display frequency at any time to adapt to the image content to be displayed currently, so that the intelligent matching of the frame rate is realized, and the working efficiency is further improved. In addition, when the professional integrated circuit board transmits the image to the monitor in the prior art, a single 3G SDI can not support the 4K signals of 50P and 60P, the bandwidth deficiency can only be made up by using a plurality of 3G SDIs, and the high-definition multimedia interface HDMI is adopted to transmit the image to the display in the embodiment of the application, so that the 4K bandwidth requirements of 50P and 60P can be met, and the problem that the single 3G SDI can not support the 4K signals of 50P and 60P in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram showing a comparison between the prior art and the first embodiment of the present application;
fig. 2 shows a structure diagram of a nonlinear editing system according to a second embodiment of the present application;
fig. 3 shows a structure diagram of a nonlinear editing unit in a third embodiment of the present application;
FIG. 4 is a schematic diagram illustrating a display card structure of non-linear editing according to a fourth embodiment of the present application;
FIG. 5 is a flowchart of a processing method of non-linear editing according to a fifth embodiment of the present application;
FIG. 6 is a logic diagram illustrating the issuing of an instruction to adjust the display frequency and the feedback of the execution result between the graphics card and the non-linear editing unit;
fig. 7 is a flowchart illustrating a display method of nonlinear editing according to a sixth embodiment of the present application.
Detailed Description
In the process of implementing the present application, the inventor finds that in the prior art, the output technology of the conventional nonlinear editing architecture using the monitor and the SDI professional board has become a habitual configuration, so that manufacturers of large nonlinear editing systems continue to use the technology architecture when developing nonlinear editing systems. The cost of the monitor is nearly 10 times higher than that of the monitor, and it is undoubtedly a significant expense for the user who needs to purchase the nonlinear editing system in large quantities, both for purchase and for post-maintenance. Therefore, it is of great significance to users if the configuration cost of the nonlinear editing system can be reduced.
In order to solve the above problems, the present application provides a method, an apparatus, and a system for processing nonlinear editing display, which can efficiently complete nonlinear editing work without configuring a monitor and a professional board card, thereby saving configuration cost and improving work efficiency.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
Fig. 1 shows a schematic diagram comparing the prior art with the first embodiment of the present application.
As shown in fig. 1, the upper line indicates a connection relationship of some devices in a nonlinear editing system according to an embodiment of the present application, and after image content in a progressive scanning form is transmitted to a graphics card, the graphics card transmits the image content to a display through a high-definition multimedia interface HDMI to display a preview.
As shown in fig. 1, a line below shows a connection relationship of some devices in a non-linear editing system in the prior art, image content in an interlaced scanning form is transmitted to a professional board card, the professional board card converts the image content into an SDI signal and transmits the SDI signal to a monitor, and the monitor reads the image content in the interlaced scanning form for preview display.
It can be seen through above-mentioned comparison that in this application embodiment one, the display card of adoption is different with prior art's professional integrated circuit board, and in addition, the structure that the display card passes through HDMI and the display links to each other is different with the structure that prior art's professional integrated circuit board passes through the SDI interface and links to each other with the monitor.
In this embodiment, the preview screen may be directly displayed on the display, which implements the preview function of the monitor, so that the preview may be implemented by using the display without configuring the monitor and the professional board card.
Example two
Fig. 2 shows a structure diagram of a nonlinear editing system according to a second embodiment of the present application. The method comprises the following steps: a non-linear editing unit 101, a display card 102, a display 103 and a display 104. Wherein,
the nonlinear editing unit is used for performing frame extraction processing on an image to be edited in an interlaced scanning mode to form image information in a progressive scanning mode; obtaining the frame rate of the processed image information, comparing the current display frequency sent last time by the display card with the frame rate, and if the current display frequency and the frame rate are different, issuing a display frequency adjusting instruction to the display card; and then transmitting the image information in the progressive scanning mode to a display card.
It should be noted that, the technology of performing frame extraction processing on an image in an interlaced scanning format to form image information in a progressive scanning format is the prior art, and the description of the technology is not further provided herein.
And after receiving the display frequency adjusting instruction, the display card executes the frequency required by the display frequency adjusting instruction, and transmits the image information to a display for previewing through a high-definition multimedia interface (HDMI).
The system of the present embodiment comprises two displays, wherein the display 103 connected to the graphics card is used for selecting material (i.e. images) and editing material, and the display 104 is used for previewing editing effects. That is, the display 103 can undertake the functions of selecting materials and editing materials which are originally realized by 2 displays respectively in the prior art, while the display 104 is an improvement of the embodiment over the prior art, and after the materials are selected and edited by the display 103, the display 104 displays according to the image information received from the display card 102, so as to realize the preview of the nonlinear editing effect. Since a plurality of displays can be connected to one graphics card, each display has a corresponding ID, in order to ensure the display of a display dedicated for preview, the graphics card 102 can block the request of displaying on the display 104 by a process other than the preview display process according to the process ID, that is, exclusive display of the display 104 is performed.
In specific implementation, the HDMI interface can provide a transmission bandwidth of 5Gbps, can transmit uncompressed audio signals and high-resolution video signals, and does not require digital-to-analog or analog-to-digital conversion before signal transmission, thereby ensuring high-quality audio-visual signal transmission.
In specific implementation, the display card may further feed back, to the non-linear editing unit through the bus, the current display frequency information after the instruction to adjust the display frequency is executed.
Since frame rate conversion is a common situation in actual nonlinear editing work, in order to meet the requirements of outputting different frame rates, intelligent frame rate matching is performed on the preview display. In the prior art, the frame rate adjustment of the display can only be performed manually, so as to respectively change the display frequency of the display card according to the input signals with different frame rates. In the second embodiment of the present application, the non-linear editing unit obtains the frame rate of the image information, then compares the current display frequency sent by the display card last time with the frame rate, and if the current display frequency is different from the frame rate, sends a display frequency adjustment instruction to the display card, and notifies the display card to adjust the display frequency to adapt to the image content to be displayed currently.
Specifically, when the non-linear editing unit acquires the frame rate of the image information, the frame rate may be acquired by reading metadata in the image information.
In the nonlinear editing system according to the second embodiment of the present application shown in fig. 2, the material (i.e., image) can be selected and subjected to timeline editing using 1 display, and after editing is completed, a preview screen can be directly displayed on the other display. It can be seen that, in this embodiment, the 2 displays implement the edit preview function that would otherwise be implemented by the 2 displays and the 1 monitor. There is no need to reconfigure the monitor.
According to the nonlinear editing system provided by the embodiment, the image information is transmitted to the display through the high-definition multimedia interface HDMI through the display card, so that the display can also realize the preview function of nonlinear editing (the preview function of the monitor is realized), the monitor and a professional board card are not required to be configured, and the system configuration cost is reduced; and the problems of image quality reduction and time delay caused by repeated decompression and compression during transmission through the SDI interface are also avoided.
EXAMPLE III
Fig. 3 shows a structure diagram of a nonlinear editing unit in the third embodiment of the present application. The nonlinear editing unit may be disposed on the host computer, or on another circuit board, or integrated in another device, and is not limited in form here. The nonlinear editing unit may specifically include the following modules:
a conversion module 201, configured to perform frame extraction processing on an image in an interlaced scanning format to form image information in a progressive scanning format; colloquially, that is, converting an interlaced image into a progressive image; a frame rate obtaining module 202, configured to obtain a frame rate in image information in a progressive scanning mode; a frame rate matching module 203, configured to select a matched display frequency according to the frame rate; the receiving module 204 is configured to receive display frequency information sent by the display card; the display frequency sent by the last display card is specifically referred to herein; a sending module 205, configured to send a display frequency adjustment instruction to the display card when the display frequency of the display card is different from the matched display frequency; and then transmits the image information to the display card.
Further, the receiving module 204 is further configured to receive current display frequency information fed back by the display card and used for executing the display frequency adjusting instruction.
Further, the frame rate obtaining module 202 may specifically obtain the frame rate by reading metadata in the image information. The frame rates commonly used in the non-linear editing process are 23.976, 24, 25, 29.976, 30, 50, 60fps, etc. Since there are currently a large number of display cards covering all frequencies, it is assumed here that the display cards support all display frequencies.
Further, the nonlinear editing unit may further include an exclusive display module 206 (not shown in the figure) for blocking a request for displaying a process other than the preview display process on the display according to the process ID.
In the prior art, most of image materials recorded by the camera equipment are image contents in an interlaced scanning mode, so that the image materials transmitted to the professional board card during nonlinear editing in the prior art are also contents in the interlaced scanning mode. In this embodiment, the non-linear editing unit performs framing on the image in the interlaced scanning form through the conversion module 201 to form image information in the progressive scanning form, that is, converts the image content in the interlaced scanning form into the image content in the progressive scanning form, so that the content input to the display card is the content in the progressive scanning, and then the preview can be realized on the display supporting the progressive scanning.
The nonlinear editing unit provided in this embodiment can convert the image in the interlaced scanning form into the image information in the progressive scanning form, and adjust the display frequency of the display card at any time to adapt to the image content to be displayed currently, so that the intelligent matching control of the frame rate is realized, and the working efficiency of the nonlinear editing is further improved.
Example four
Fig. 4 shows a schematic structural diagram of a graphics card for non-linear editing according to a fourth embodiment of the present application, where the schematic structural diagram includes:
a receiving information module 301, configured to receive a display frequency adjustment instruction through a bus, and receive image information; the image content in the form of progressive scanning is received here as an image; an execution module 302, configured to execute the instruction for adjusting the display frequency, and adjust the display frequency to a frequency required by the instruction; a sending information module 303, configured to transmit the image information to a display for previewing through a high-definition multimedia interface HDMI according to the adjusted display frequency; and the display frequency adjusting unit is also used for feeding back the current display frequency after the display frequency adjusting instruction is executed to the nonlinear editing unit.
In this embodiment, the display card receives a display frequency adjustment instruction of the nonlinear editing unit through the bus, and transmits image content in a progressive scanning form to a display for preview through a high-definition multimedia interface HDMI and according to a matched frequency, so as to preview a nonlinear editing effect. The configuration cost of the video card is much lower than that of a professional board card in the prior art, so that the configuration cost of the nonlinear editing system can be reduced.
EXAMPLE five
The above embodiments provide structural descriptions of a nonlinear editing system, a unit, and the like, and based on the same inventive concept, the embodiments provide descriptions of a flow of a nonlinear editing processing method.
Fig. 5 shows a flow of a processing method for nonlinear editing in a fifth embodiment of the present application, which may be applied to a nonlinear editing unit, or other modules and devices capable of implementing the function, and specifically includes:
s401: performing frame extraction processing on the image in an interlaced scanning mode to form image information in a progressive scanning mode; in the prior art, most of image materials recorded by a camera device are image contents in an interlaced scanning mode, so the image materials to be edited are generally images in the interlaced scanning mode; in order to enable a display supporting progressive scanning to display a picture, it is necessary here to convert an image in an interlaced scanning form into an image in a progressive scanning form;
s402: acquiring a frame rate in the image information in the progressive scanning mode; in practice, the frame rate may be obtained by reading metadata in the image information; namely, the frame rate can be obtained by reading the metadata of the material on the time line;
s403: selecting a matched display frequency according to the frame rate; the display frequency here can also be understood as the popular refresh frequency;
s404: when the display frequency of the display card is different from the matched display frequency, issuing a display frequency adjusting instruction; the command is also a refresh display frequency command;
s405: and sending the image information in the progressive scanning mode.
Further, the method flow may further include: and receiving the display frequency information fed back last time and receiving the current display frequency information after the display frequency adjusting instruction is executed.
Fig. 6 shows a logic diagram of issuing a display frequency adjustment command and feeding back an execution result (change result) between the graphics card and the non-linear editing unit.
Further, the method flow may further include: display requests of processes other than the preview process on the preview display are blocked based on the process ID. In specific practice, when the other processes are prevented from being displayed exclusively, the method can be realized by the following steps: the nonlinear editing unit acquires display information in the window, wherein the display information comprises an ID of the display; acquiring a process ID of nonlinear editing as a unique permission ID; monitoring the windows message at any moment to see whether other processes access the display; processes other than the non-linear editing process are prevented from invoking the display.
The above embodiment provides a flow description of a nonlinear editing processing method, and it can be seen that, by converting an image in an interlaced scanning form into an image in a progressive scanning form and then previewing a picture by a display, an original nonlinear editing production flow is changed, so that a monitor is not required to be used for previewing, and thus, a processing flow of a nonlinear editing system is improved, and the nonlinear editing processing method is more economical and efficient.
EXAMPLE six
The above embodiment provides a linear editing processing method flow, and based on the same inventive concept, this embodiment provides an explanation of a nonlinear editing display method flow.
Fig. 7 is a flowchart illustrating a display method for nonlinear editing according to a sixth embodiment of the present application, which may be applied to a device or apparatus such as a display card, and specifically includes:
s501: receiving a display frequency adjusting instruction issued according to the frame rate of the image information; the display frequency here can also be understood as the popular refresh frequency;
s502: receiving the image information, wherein the image information is in a progressive scanning mode;
s503: executing the display frequency instruction, and transmitting the image information through a high-definition multimedia interface (HDMI) according to the adjusted display frequency for previewing by a display;
s504: and feeding back the execution result of the current display frequency instruction.
The display frequency can be adjusted in real time according to the frame rate of the image, so that the intelligent frame rate matching function is realized, and the processing flow of the nonlinear editing is improved by the method for previewing the picture by the display, so that the display working efficiency is improved.
It should be noted that the present solution can be used not only in a 4K-based nonlinear editing system, but also in an image editing system with higher resolution or lower resolution, and therefore, the present solution has a wide application range.
According to the nonlinear editing system provided by the embodiment of the application, the image information is transmitted to the display through the high-definition multimedia interface HDMI through the display card, so that the display can also realize a preview function of nonlinear editing (the preview function of the monitor is realized), the monitor and a professional board card are not required to be configured, and the configuration cost of the system is reduced; and the problems of image quality reduction and time delay caused by repeated decompression and compression during transmission through the SDI interface are also avoided.
According to the nonlinear editing unit provided by the embodiment of the application, images in an interlaced scanning mode can be converted into image information in a progressive scanning mode, and the display frequency of the display card is adjusted at any time to adapt to the image content to be displayed currently, so that intelligent frame rate matching control is realized, and the working efficiency of nonlinear editing is further improved.
According to the display card provided by the embodiment of the application, the display frequency can be adjusted at any time to adapt to the image content to be displayed currently, so that the intelligent matching of the frame rate is realized, and the working efficiency of nonlinear editing is further improved. In addition, the display card adopts high definition multimedia interface HDMI to transmit the image to the display, can satisfy 50P and 60P's 4K bandwidth demand, has solved the problem that single 3G SDI can't support 50P and 60P's 4K signal among the prior art.
By adopting the nonlinear editing processing method in the embodiment of the application, the image in the interlaced scanning mode is converted into the image in the progressive scanning mode, and then the design of the picture is previewed by the display, so that the original nonlinear editing manufacturing process is changed, a monitor is not required to be used for previewing, the processing process of a nonlinear editing system is improved, and the nonlinear editing processing method is more economic and efficient.
By adopting the nonlinear editing display method in the embodiment of the application, the display frequency can be adjusted in real time according to the frame rate of the image, so that the intelligent frame rate matching function is realized, the processing flow of the nonlinear editing is improved through a method for previewing the picture by the display, and the display working efficiency is improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. A non-linear editing system, comprising: the device comprises a nonlinear editing unit, a display card and a display;
the nonlinear editing unit includes:
the conversion module is used for performing frame extraction processing on the image in the interlaced scanning mode to form image information in the progressive scanning mode;
a frame rate obtaining module, configured to obtain a frame rate in the image information in the progressive scanning mode;
the frame rate matching module is used for determining the matched display frequency according to the frame rate of the image information;
the receiving module is used for receiving the display frequency fed back by the display card;
the sending module is used for issuing a display frequency adjusting instruction to the display card when the display frequency of the display card is different from the matched display frequency; transmitting the image information to the display card;
the display card transmits the image information to the display for previewing through a high-definition multimedia interface (HDMI) according to the display frequency adjusting instruction; and feeding back the current display frequency information after the display frequency adjusting instruction is executed to the nonlinear editing unit through a bus.
2. The system according to claim 1, wherein the non-linear editing unit further comprises,
and the exclusive display module is used for preventing the processes except the preview display process of the image information from displaying requests on the display according to the process ID.
3. A non-linear editing unit, comprising:
the conversion module is used for performing frame extraction processing on the image in the interlaced scanning mode to form image information in the progressive scanning mode;
a frame rate obtaining module, configured to obtain a frame rate in the image information in the progressive scanning mode;
the frame rate matching module is used for selecting matched display frequency according to the frame rate;
the receiving module is used for receiving display frequency information sent by the display card;
the sending module is used for sending a display frequency adjusting instruction to the display card when the display frequency of the display card is different from the matched display frequency; and transmitting the image information to the display card.
4. The nonlinear editing unit of claim 3, wherein:
the receiving module is further configured to receive current display frequency information fed back by the display card after the display frequency adjustment instruction is executed.
5. The nonlinear editing unit of claim 3, wherein the frame rate obtaining module obtains the frame rate by reading metadata in the image information.
6. The nonlinear editing unit of claim 3, further comprising:
and the exclusive display module is used for preventing the processes except the preview display process from displaying the request on the display according to the process ID.
7. A graphics card for non-linear editing, comprising:
the information receiving module is used for receiving the instruction of adjusting the display frequency and receiving the image information through the bus;
the execution module is used for executing the display frequency adjusting instruction and adjusting the display frequency to the frequency required by the display frequency adjusting instruction;
and the information sending module is used for transmitting the image information to a display for previewing through a high-definition multimedia interface (HDMI) according to the adjusted display frequency.
8. The graphics card of claim 7,
and the information sending module is also used for feeding back the current display frequency after the display frequency adjusting instruction is executed.
9. A nonlinear editing processing method, comprising:
performing frame extraction processing on the image in an interlaced scanning mode to form image information in a progressive scanning mode; acquiring a frame rate in the image information;
selecting a matched display frequency according to the frame rate;
receiving the display frequency information fed back last time, and issuing a display frequency adjusting instruction when the display frequency of the display card is different from the matched display frequency;
and sending the image information.
10. The method of claim 9, further comprising:
and according to the process ID, blocking the display request of other processes except the preview process.
11. The method of claim 9, further comprising:
and receiving the current display frequency information after the display frequency adjusting instruction is executed.
12. The method of claim 9, wherein the obtaining a frame rate in the image information comprises: and acquiring the frame rate by reading metadata in the image information.
13. A non-linear editing display method, comprising:
receiving a display frequency adjusting instruction issued according to the frame rate of the image information;
receiving the image information;
executing the display frequency adjusting instruction, and transmitting the image information through a high-definition multimedia interface (HDMI) for previewing according to the adjusted display frequency;
and feeding back the execution result of the current display frequency instruction.
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