CN101795390A - Method, system and device for transmitting image frame - Google Patents

Abstract

The invention relates to a video data transmission method, a system and a device. The video data transmission method of the present invention is applied between a video data providing device, a first video device and a second video device, and comprises the following steps: the video data providing device obtains an image coding format which can be supported by the first video device; the video data providing device provides an image picture, converts the image picture into video data according to the image coding format and then transmits the video data to the second video device; and the second video device transmits the video data to the first video device, and the first video device decodes the video data according to the image coding format to obtain the image picture. The invention really improves the phenomenon of the prior art that the compression and transmission mechanisms are arranged on the conference management device to cause heavy burden, thereby further improving the effect of data transmission in the video conference.

Description

Method, system and device for transmitting image frames

technical field

The present invention relates to a method, system and device for video data transmission, in particular to a method for obtaining and converting an image encoding format using a video data providing device.

Background technique

In recent years, video conferencing has become a frequently used tool in the busy business world. The use of video conferencing not only avoids the need for participants to travel to and fro, but also makes meetings more immediate and efficient. When the video conference is being transmitted, in addition to the surrounding environment of the venue, the images to be transmitted also need to transmit the file data and operation screens used in the conference, such as displaying the contents of the computer screen and electronic whiteboard through the network in real time. Transmission, so the amount of transmitted data is also very important for network transmission with heavy video bandwidth.

In other words, there are often multiple pictures to be transmitted in a video conference, and the picture content needs to occupy a considerable bandwidth. Such a data volume will form a great burden on the network. Therefore, a method of using compressed picture formats has been developed. . Please refer to FIG. 1 , which is a schematic diagram of transmitting an image frame of a user computer to a remote conference management device through a local conference management device and a network in the known technology.

It can be found from FIG. 1 that the image screen output by the user computer 101 is first transmitted to the local conference management device 103 through the connection of the data line, and the local conference management device 103 and the remote conference management device 107 conduct a one-way communication through the network 105. The communication process is used to confirm the image format supported by the remote conference management device 107 . Then, the local conference management device 103 compresses and converts the image screen output by the user computer 101 into a data type of an image format supported by the remote conference management device 107, and then transmits the data in this image format through the network 105 to The remote conference management device 107 then performs a corresponding reverse data conversion process by the remote conference management device 107, thereby restoring the image frame to the original image frame for presentation.

It can be found through the foregoing description of FIG. 1 that the practice of the known technology has the following defects: firstly, the user computer must be connected to the conference management device at the local end through a data connection. The distance between computers is not fixed, and the number of user computers 101 may be more than one, these data connections will make the conference space appear messy and inconvenient to operate; secondly, the conference management device must simultaneously shoulder the communication screen compression format and compress the screen As well as converting the network transmission format and other work, the burden of the conference management device is too heavy to achieve an efficient video conference process.

Contents of the invention

The problem to be solved by the present invention is that the conventional technology described above has the problems of too complicated connection and too heavy burden of the conference management device.

The present invention is a method for transmitting video data, which is applied between a video data providing device, a first video device and a second video device. The video data transmitting method includes the following steps: the video data providing device acquires the first An image coding format that the video device can support; the video data providing device provides an image frame, and converts the image frame into a video data according to the image coding format and then transmits it to the second video device; and the second video device The video data is transmitted to the first video device, and the first video device decodes the video data according to the image encoding format to obtain the image frame.

According to the above idea, in the video data transmission method of the present invention, the step of obtaining the image encoding format supported by the first video device by the video data providing device is performed by the video providing device through the second video device to the first Obtained by querying the video device.

According to the above idea, the video data transmission method of the present invention, wherein the video providing device returns the image coding format by the first video device through the second video device querying the first video device.

According to the above idea, in the video data transmission method of the present invention, the step of obtaining the video data from the video providing device through the second video device to the first video device is obtained by the video providing device or the second video device from the The image encoding format is selected from multiple supportable image encoding formats provided by the first video device.

According to the above idea, in the video data transmission method of the present invention, the step of obtaining the image encoding format supported by the first video device by the video data providing device is to read a set value of a memory unit by the video providing device And get.

According to the above idea, in the video data transmission method of the present invention, the set value can be a factory set value, a user default value or a historical record value.

According to the above idea, the video data transmission method of the present invention, wherein the information is transmitted between the first video device and the second video device through a wide area network, and the video data providing device and the second video device are connected through a LAN transfers information.

According to the idea above, in the video data transmission method of the present invention, information is transmitted between the first video device, the second video device and the video data providing device through a network.

According to the idea above, in the video data transmission method of the present invention, the step of converting the image frame into the video data by the video data providing device according to the image coding format can be completed by a logic circuit unit or a software program.

According to the idea above, in the video data transmission method of the present invention, the step of converting the image frame into the video data according to the image encoding format and then transmitting the image frame to the second video device includes the following steps: The video data is further converted into encrypted video data by an encryption operation and then transmitted.

According to the idea above, in the video data transmission method of the present invention, the step of the first video device decoding the video data according to the image encoding format to obtain the image frame includes the following steps: the first video device will A decryption operation is performed on the encrypted video data to obtain the video data.

According to the idea above, in the video data transmission method of the present invention, the step of converting the image frame into the video data according to the image encoding format and then transmitting the image frame to the second video device includes the following steps: The video data is further converted into compressed video data by a compression operation and then transmitted.

According to the idea above, in the video data transmission method of the present invention, the step of the first video device decoding the video data according to the image encoding format to obtain the image frame includes the following steps: the first video device will The compressed video data is decompressed to obtain the video data.

According to the above idea, in the video data transmission method of the present invention, the step of transmitting the video data to the first video device by the second video device is to convert the video data into a network format data by the second video device transmitted to the first video device through a network.

Another aspect of the present invention is a video data transmission system applied on a network, which includes: a first video device, signal connected to the network, which can support an image encoding format; a second video device, signal connected to the network; and a video data providing device, signally connected to the first video device and the second video device, which obtains the image coding format supported by the first video device, and converts the video data according to the image coding format An image frame is converted into a video data and then sent to the second video device, and after the second video device sends the video data to the first video device, the first video device encodes the video data according to the image coding format Decoding is performed to obtain the image frame.

According to the idea above, in the video data transmission system of the present invention, the video data providing device includes: a memory unit for recording the image encoding format supported by the first video device.

According to the above idea, the video data transmission system of the present invention, wherein the video data providing device includes: a video frame generating device, which provides the image frame; and a video data converting device, electrically connected to the video frame generating device, After obtaining the image encoding format supported by the first video device, the image frame is converted into the video data according to the image encoding format, and then transmitted to the second video device through the network.

According to the above idea, in the video data transmission system of the present invention, the video frame generation device can be a personal computer, a mobile electronic device, a camera device or an image capture device.

According to the above idea, in the video data transmission system of the present invention, wherein the video data providing device converts the image frame into the video data through a software program.

According to the above idea, in the video data transmission system of the present invention, wherein the video data providing device converts the image frame into the video data through a logic circuit.

According to the idea above, in the video data transmission system of the present invention, wherein the image coding format defines a compression/decompression format, so as to reduce the amount of data required for the second video device to transmit the video data to the first video device through the network quantity.

According to the above idea, in the video data transmission system of the present invention, the image coding format defines an encryption/decryption format, so as to verify the transmission relationship between the second video device and the first video device.

Another aspect of the present invention is a video data providing device, applied to a first video device and a second video device connected through a network, and the first video device supports an image encoding format, the video data providing device Including: a video frame generating device, which provides an image frame; and a video data conversion device, signally connected to the video frame generating device, the first video device and the second video device, which obtains the support of the first video device After the image encoding format, according to the image encoding format, the image frame is converted into a video data and then transmitted to the second video device through the network, and the second video device transmits the video data to the first video device and enabling the first video device to decode the video data according to the image encoding format to obtain the image frame.

According to the above idea, the video data providing device of the present invention, wherein the video data providing device further includes: a memory unit electrically connected to the video image generating device and the video data converting device, which records the The supported image encoding format.

According to the above idea, in the video data providing device of the present invention, the image coding format recorded in the memory unit can be a factory default value, a user default value or a historical record value.

According to the above idea, in the video data providing device of the present invention, wherein the video data conversion device converts the image frame into the video data through a software program.

According to the above idea, in the video data providing device of the present invention, the video data conversion device converts the image frame into the video data through a logic circuit.

According to the above idea, in the video data providing device of the present invention, the video frame generating device and the video data converting device can be electrically connected through the network or a physical connection.

According to the above idea, the video data providing device of the present invention, wherein the video data conversion device includes: a transmission unit, signal-connected to the first video device; a judging unit, electrically connected to the transmission unit, which obtains the The image format supported by the first video device; and a coding unit, electrically connected to the interpretation unit and the transmission unit, which converts the image frame into the video data according to the image coding format and transmits the video through the transmission unit data to the first video device.

According to the above idea, in the video data providing device of the present invention, wherein the encoding unit converts the image frame into the video data through a data compression operation.

According to the idea above, in the video data providing device of the present invention, the encoding unit converts the image frame into the video data through an operation of encrypting video data.

According to the above idea, in the video data providing device of the present invention, the video frame generating device can be a personal computer, a mobile electronic device, a photographing device or an image capturing device.

Another aspect of the present invention is a video data conversion device, which transmits an image frame according to an image format supported by a first video device, and the video data conversion device includes: a transmission unit, signally connected to the first video device ; an interpretation unit, electrically connected to the transmission unit, which obtains the image format supported by the first video device; and an encoding unit, electrically connected to the interpretation unit and the transmission unit, which according to the image encoding format The image frame is converted into a video data and the video data is transmitted to the first video device through the transmission unit.

According to the above idea, the video data conversion device of the present invention further includes: a receiving unit, signal connected to a second video device signally connected to the first video device through a network and electrically connected to the The judging unit acquires the image format of the first video device through the network and the second video device, so as to provide the setting of the image format to the judging unit.

According to the above idea, the video data conversion device of the present invention, the video data conversion device further includes: a memory unit, electrically connected to the interpretation unit and the encoding unit, which records the image format supported by the first video device .

According to the above idea, in the video data conversion device of the present invention, wherein the judging unit reads the image format supported by the first video device from the memory unit.

According to the above idea, in the video data conversion device of the present invention, the memory unit records the image format supported by the first video device through a factory default value, a user default value or a historical record value .

According to the idea above, in the video data conversion device of the present invention, the coding unit includes: an encryption/decryption mechanism module, which is used as identity verification between the first video device and the video data conversion device.

According to the idea above, in the video data conversion device of the present invention, the encoding unit includes: a compression module, which converts the image frame into the video data at a low data rate.

According to the above idea, in the video data conversion device of the present invention, the judging unit selects the image format from a plurality of image formats supported by the first video device according to a selection rule.

According to the above idea, in the video data conversion device of the present invention, the selection rule can be selected according to a characteristic of the image format or set for a user.

An application mode of the present invention is a computer program product, on which a software program is stored, and the software program is applied to a video data providing device to realize a video data transmission method, and the video data transmission method includes the following steps: The video data providing device obtains an image coding format supported by a first video device; the video data providing device provides an image frame, and converts the image frame into a video data according to the image coding format and transmits it to a second video device; and the second video device transmits the video data to the first video device, and the first video device decodes the video data according to the image encoding format to obtain the image frame.

The present invention does improve the overload phenomenon that the prior art arranges the compression and transmission mechanism in the conference management device, and can further improve the effect of data transmission in the video conference.

Description of drawings

FIG. 1 is a schematic diagram of the architecture of a video conferencing system in the known technology.

FIG. 2 is a schematic diagram of the architecture of the video conferencing system applied in the present invention.

FIG. 3( a ) is a schematic diagram of the connection relationship of a single device in the video data transmission system of the present invention.

Fig. 3(b) is a schematic diagram of the composition of the video data providing device of the present invention.

Fig. 3(c) is a schematic diagram of the internal structure of the video data conversion device provided by the present invention.

FIG. 3( d ) is a schematic diagram of an alternative connection relationship of a single device in the video data transmission system of the present invention.

Fig. 4 is a flow chart of system control in a preferred embodiment of the present invention.

The reference numerals in the above-mentioned accompanying drawings are explained as follows:

101 user computer 21 memory unit

103 local conference management device 22 video screen generation device

105, 205 network 23 video data conversion device

107 remote conference management device 231 interpretation unit

201 Video data providing device 232 Transmission unit

203 second video device 233 encoding unit

207 first video device 234 receiving unit

209 LAN 1101～1302 steps

211 WAN

Detailed ways

In the known technology, the conference management device must simultaneously undertake tasks such as compressing the communication screen format, compressing the screen, and converting the network transmission format. In order to improve the transmission effect and reduce the burden on the conference management device, the present invention converts the image screen into a video data screen Distributing the actions to a single video provider provides a more efficient method of image data transfer.

Please refer to Fig. 2, which is a schematic diagram of the system architecture of the application of the present invention. The present invention defines the video transmission steps between the remote conference management device and the local end conference management device. , a mobile electronic device, a camera device or an image extraction device, etc.) through the local conference management device, that is, the second video device 203 and the network 205 to obtain a remote conference management device, that is, the first video device 207 can support An image coding format; then the image frame provided by the video data providing device 201 is converted into a video data according to the aforementioned image coding format and then sent to the second video device 203; then converted by the second video device 203 The final video data is transmitted to the remote conference management device (the first video device 207), and the remote conference management device (the first video device 207) and other connected devices etc. decode the video data according to the image encoding format And get back the original image frame provided by the video data providing device 201 .

The following description first uses FIG. 3 to illustrate different types of system and device configurations when the present invention is applied, and then uses FIG. 4 to explain the control flow and possible application of the control process.

Please refer to FIG. 3( a ), which is a schematic diagram of the connection relationship of a single device in the video data transmission system of the present invention. In this figure, the first video device 207 and the second video device 203 transmit information through the wide area network 211 , while the video data providing device 201 and the second video device 203 transmit information through a local area network 209 . Wherein, after the video data providing device 201 obtains the image coding format supported by the first video device 207 through the second video device 203, the image frame is converted into video data according to the image coding format, and then transmitted to the second video device 203; After the second video device 203 receives the video data, the video data can be compressed, encrypted and encapsulated into network packet format according to the needs of system planning, and then sent to the first video device 207; finally the first video device 207 According to the image encoding format and other corresponding/reverse processing corresponding to the actions performed by the video data providing device 201 before transmission, the video data is decoded to obtain an image frame.

Please refer to FIG. 3(b), which is a schematic diagram of the composition of the video data providing device 201 according to the present invention. In the figure, the video data providing device 201 can be further divided into video picture generation devices responsible for providing image pictures according to functional attributes 22 and the video data conversion device 23 electrically connected thereto.

In practical applications, the video image generation device 22 may be a personal computer, mobile electronic device, photographic device or image extraction device, mainly used to provide image images; and the video data conversion device 23 may be a dedicated conversion device, an adapter, or an additional A logic circuit on the video frame generating device 22 is completed. After the video data providing device 201 obtains the image coding format supported by the first video device 207 through the second video device 203, the video data conversion device 23 converts the image frame provided by the video frame generating device 22 according to the image coding format After generating video data, the video data providing device 201 transmits the video data to the first video device 207 through the network 205 and the second video device 203 .

The image encoding format here can further define an encryption/decryption mechanism, so as to provide an identity verification function between the first video device 207 and the second video device 203; A data volume for transferring video data to the first video device 207 .

In addition to the video image generation device 22 and the video data conversion device 23, the video data providing device 201 can also include a memory unit 21, which is electrically connected to the video image generation device 22 and the video data conversion device 23 and is used to record the video data supported by the first video device 207. image encoding format. It should be noted that the memory unit 21 in FIG. 3(b) is a schematic structure. In actual application, the memory unit 21 may be an independent device or be built into the video image generating device 22 or the video data converting device 23. (as shown in Figure 3(c)). Through the use of the memory unit 21, in the method for the video data providing device 201 to obtain the image encoding format supported by the first video device 207, the user can set or store the previous connection history settings, etc., And the speed of querying the image coding format supported by the first video device 207 is improved.

Please refer to FIG. 3 (c), which is an internal schematic diagram of the video data conversion device 23 provided by the present invention. This video data conversion device 23 is connected to the first video device 207 through a network 205, a second video device 203 and other signals, and According to the image format supported by the first video device 207, the image frame provided by the video frame generator 22 is transmitted, and the video data conversion device 23 includes: a transmission unit 232, which is signal-connected to the first video device through the second video device 203 207; the interpretation unit 231 is electrically connected to the transmission unit 232, and the interpretation unit 231 is used to obtain and determine the image format supported by the first video device 207 through the second video device 203; and is electrically connected to the transmission unit 232 and the interpretation unit 231 Between the encoding unit 233, it converts the image frame provided by the video image generating device 22 (such as: personal computer, mobile electronic device, photographing device or image extraction device, etc.) according to the image encoding format obtained and judged by the aforementioned interpretation unit 231 After becoming video data, the transmission unit 232 transmits the data to the first video device 207 via the network 205 and the second video device 203 .

In addition, the video data conversion device 23 in the preferred embodiment of the present invention can also include: a receiving unit 234, which is connected to the second video device 203 and electrically connected to the interpretation unit 231, which communicates with the second video device 203 through the network 205 The image format information supported by the first video device 207 is obtained indirectly, so as to provide the setting of the image format to the interpreting unit 231 .

The video data conversion device 23 of the present invention can also optionally cooperate with the use of the memory unit 21 to record the image format supported by the first video device 207 . The recording method here may be a factory default value, a user default value or a historical record value. It should be noted that the memory unit 21 here may be arranged outside the video data conversion device 23 or inside the video data conversion device 23 as shown in FIG. 3( c). In the latter case, the memory unit 21 is electrically connected to the reading unit 231 and the encoding unit 233 .

The encoding unit 233 here may have complex functions, for example, including an encryption/decryption mechanism module and a compression module. Under the cooperative use of the decryption module of the first video device 207 and the encryption module of the video data conversion device 23, the identity verification function among the participants can be provided, and the provided image screen is converted into encrypted video data through data encryption. Then, the second video device 203 and the network 205 transmit to the first video device 207, so as to avoid the leakage of the video data during transmission through the network. As for the use of the compression module, the image picture can be converted into compressed video data at a lower data rate through the action of compressing data, such as H.261, H.263, H.263+, H.264 and other data currently commonly used Encoding method, thereby reducing the amount of data transmission during transmission.

Incidentally, although the video data providing device 201 is divided into a video image generating device 22 and a video data converting device 23 in the form of logical circuit modules in the accompanying drawings, in actual application, the video data providing device 201 may pass The image frame is converted into video data by means of a software program, and there is no need to distinguish the modules for the steps of providing the image and converting the data format. By means of a computer program product on which a software program is stored, the software program is applied to the video data providing device 201 to realize the transmission of video data.

Please refer to FIG. 3( d ), which is a schematic diagram of an alternative connection relationship of a single device in the video data transmission system of the present invention. The video data transmission system here includes: a first video device 207, a second video device 203 and a video data providing device 201, all of which are connected to the network 205 through signals, where the signal connection may be a wired network or a wireless network , homogeneous or heterogeneous networks are possible. In this application, the relevant judgment process is the same as the above-mentioned method, only the data transmission interface between the devices is different, and the details will not be repeated here.

Please refer to FIG. 4 again, which is a flow chart of system control in a preferred embodiment of the present invention. The following description will be based on the steps in the figure and will describe the alternative changes that may be applied in the control flow.

In step 1101 , the video data providing device 201 obtains the image encoding format supported by the first video device 207 . The video data providing device 201 here can be a single device, or be made up of a video picture generating device 22 and a video data conversion device 23, wherein the corresponding relationship between the video picture generating device 22 and the video data converting device 23 can be a pair 1. In a many-to-many or many-to-one manner, the data exchange mechanism between the video image generating device 22 and the video data conversion device 23 can be realized through wired/wireless networks, physical data cables, adapters, application software, etc. .

The video data providing device 201 may obtain the image encoding format in the following ways. First, the video data providing device 201 may establish a connection between the first video device 207 and the second video device 203, and then use the second video device 203 and The network 205 performs an inquiry to obtain the image coding format returned by the first video device 207; secondly, the first video device 207 may support multiple types of image coding formats, so the second video device 203 or the video data provided The device 201 can use a selection rule to select the actually used image coding format, for example, the user sets a set of priorities for using the coding format, or selects according to characteristics such as the compression rate of the image format, once the first video device When there is more than one supported image encoding format returned by 207, the result selected by the interpretation unit 231 can be transmitted to the encoding unit 233 through the application of the selection rule; in addition, the image encoding format supported by the first video device 207 can also be It is pre-recorded in the memory unit 21 electrically connected to the video image generating device 22 and the video data conversion device 23, and is provided to the video providing device by the memory unit 21 during the video conference. The memory unit 21 here may be an independent device or embedded in the video image generation device 22/video data conversion device 23, and the stored settings may be provided in the form of factory default values, user default values, or historical record values. to the judging unit 231 and the encoding unit 233.

In step 1201, the video data providing device 201 provides an image frame, and converts the image frame into video data according to the image encoding format through a logic circuit unit or a software application. In addition, under the consideration of increasing the transmission speed, the video data can be further converted into compressed video data by data compression.

In step 1202 , the video data providing device 201 transmits the output (compressed) video data to the second video device 203 . The transmission method here depends on the connection relationship between the video data providing device 201 and the second video device 203, and can use different data transmission interfaces to transmit, such as through physical data lines, local area network 209, wide area network, wired/wireless network etc.

In step 1301 , the second video device 203 transmits video data to the first video device 207 . In this step, the second video device 203 converts the video data into network format data according to its connection with the first video device 207, and then transmits the network format data to the first video device 207 through the (wide area) network . If the connection data between the participants in the video conference needs to consider the situation of identity authentication, the video data can also be further converted into encrypted video data with an encryption action before transmission by the second video device 203, so that it can ensure Only authorized participants can correctly interpret the content of the video data.

In step 1302, the first video device 207 decodes the video data according to the image encoding format to obtain an image frame. The decoding action here corresponds to the encoding action before transmission. Therefore, when the video data is compressed , the first video device 207 needs to reversely decompress the compressed video data to get back the video data; and if the video data is encrypted before transmission, it needs to be decompressed after the first video device 207 receives it. The original video data is obtained by decrypting the action, and finally the video data is converted into an original image frame.

Here, the first video device 207 can cooperate with other devices to present the video data in front of the remote user in the form of application software or hardware, and then complete the transmission of the screen. Of course, the remote conference management device can also The video data providing apparatus 201 of the present invention is used to provide a corresponding picture providing method.

Through the above-mentioned Figures 2 to 4, the core control method, system and device architecture configuration, and the application of the control process in the present invention are respectively explained. It can be seen that the present invention has indeed improved the known technology by arranging both compression and transmission mechanisms in conference management. The phenomenon of excessive burden on the device can be avoided, and the effect of data transmission in the video conference can be further improved.

Although the present invention has disclosed the above-mentioned preferred embodiments, it is not intended to limit the present invention, and the present invention can be modified by any person of ordinary skill in the art, without departing from the protection of the appended claims. scope.

Claims (18)

1. A video data transmission method, applied between a video data providing device, a first video device and a second video device, the video data transmission method comprises the following steps: The video data providing device obtains an image encoding format supported by the first video device; The video data providing device provides an image frame, and converts the image frame into a video data according to the image coding format and transmits it to the second video device; and The second video device transmits the video data to the first video device, and the first video device decodes the video data according to the image encoding format to obtain the image frame. 2. The video data transmission method as claimed in claim 1, wherein the step of obtaining the image encoding format supported by the first video device by the video data providing device is by the video providing device to the first video device through the second video device It is obtained by querying the video device, or by reading a setting value of a memory unit by the video providing device. 3. The video data transmission method as claimed in claim 2, wherein the video providing device can return the image encoding format by the first video device through the step of querying the first video device by the second video device, The video coding format may also be selected by the video providing device or the second video device from a plurality of supportable video coding formats provided by the first video device. 4. The video data transmission method as claimed in claim 1, wherein information is transmitted between the first video device, the second video device and the video data providing device through a network. 5. A video data transmission system applied to a network, comprising: A first video device, signally connected to the network, which can support an image coding format; a second video device signally connected to the network; and A video data providing device, signally connected to the first video device and the second video device, which obtains the image coding format supported by the first video device, and converts an image frame into a video according to the image coding format The data is then transmitted to the second video device, and after the second video device transmits the video data to the first video device, the first video device decodes the video data according to the image encoding format to obtain the video data image screen. 6. The video data transmission system as claimed in claim 5, wherein the video data providing device comprises: A memory unit records the image encoding format supported by the first video device. 7. The video data transmission system as claimed in claim 5, wherein the video data providing device comprises: a video frame generating device, which provides the image frame; and A video data conversion device, electrically connected to the video image generating device, after obtaining the image encoding format supported by the first video device, converting the image image into the video data according to the image encoding format, and then transmitting it through the network to the second video device. 8. A video data providing device, applied to a first video device and a second video device connected through a network, and the first video device supports an image coding format, and the video data providing device includes: a video frame generating device, which provides an image frame; and A video data conversion device, signally connected to the video picture generating device, the first video device and the second video device, after obtaining the image coding format supported by the first video device, according to the image coding format to convert the After the image frame is converted into a video data, it is transmitted to the second video device through the network, and the second video device transmits the video data to the first video device, so that the first video device encodes the video data according to the image encoding format. The video data is decoded to obtain the image frame. 9. The video data providing device as claimed in claim 8, wherein the video data providing device further comprises: A memory unit is electrically connected to the video image generating device and the video data conversion device, and records the image encoding format supported by the first video device. 10. The video data providing device as claimed in claim 8, wherein the video data conversion device converts the image frame into the video data through a software program or a logic circuit. 11. The video data providing device as claimed in claim 8, wherein the video frame generating device and the video data converting device are electrically connected through the network or a physical connection. 12. The video data providing device as claimed in claim 8, wherein the video data converting device comprises: a transmission unit, signally connected to the first video device; a judging unit, electrically connected to the transmitting unit, which obtains the image format supported by the first video device; and An encoding unit is electrically connected to the interpreting unit and the transmitting unit, which converts the image frame into the video data according to the image encoding format and transmits the video data to the first video device through the transmitting unit. 13. The video data providing device as claimed in claim 12, wherein the encoding unit converts the image frame into the video data by compressing data or encrypting video data. 14. A video data conversion device for transmitting an image frame according to an image format supported by a first video device, the video data conversion device comprising: a transmission unit, signally connected to the first video device; a judging unit, electrically connected to the transmitting unit, which obtains the image format supported by the first video device; and A coding unit is electrically connected to the interpretation unit and the transmission unit, which converts the image frame into a video data according to the image coding format and transmits the video data to the first video device through the transmission unit. 15. The video data conversion device as claimed in claim 14, the video data conversion device further comprising: A receiving unit, signal connected to a second video device signally connected to the first video device through the network and electrically connected to the judgment unit, which obtains the image of the first video device through the network and the second video device format, so as to provide the setting of the image format to the interpretation unit. 16. The video data conversion device as claimed in claim 14, the video data conversion device further comprising: A memory unit, electrically connected to the interpretation unit and the encoding unit, which records the image format supported by the first video device, and the interpretation unit reads the image format supported by the first video device from the memory unit . 17. The video data conversion device as claimed in claim 14, wherein the judging unit selects from a plurality of image formats supported by the first video device according to a selection rule such as a feature selection or a user setting of the image format Choose the image format. 18. A computer program product, on which a software program is stored, and the software program is applied to a video data providing device to realize a video data transmission method, the video data transmission method comprising the following steps: The video data providing device obtains an image coding format supported by a first video device; The video data providing device provides an image frame, and converts the image frame into a video data according to the image coding format and transmits it to a second video device; and The second video device transmits the video data to the first video device, and the first video device decodes the video data according to the image encoding format to obtain the image frame.

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