TWI383638B - Real-time multimedia streaming transmitting method and server thereof - Google Patents

Description

Network instant multimedia transmission method and server

The present invention relates to a method of digital information transmission, and more particularly to a method of data exchange network.

In general, when you want to enjoy multimedia video over the Internet, you need to convert the multimedia audio and video files into multimedia streaming (Streaming) for transmission to the client through the network. Further, multimedia streaming is mainly applied to on-the-fly (On Live) and non-instant (On Demand) audio and video playback. Among them, if you want to play live video, you can only use RTP Streaming (Real Time Protocol Streaming) to play. However, different RTP Streamings require different playback programs to be installed in advance, which causes inconvenience in use.

It can be seen from the above that a network instant multimedia transmission method is needed, so that the client can play the instant multimedia stream without installing the player in advance.

Therefore, a technical aspect of the present invention is a network instant multimedia transmission method, in which an instant multimedia stream is transmitted after a virtual file header is transmitted to a client, so that the client treats the instant multimedia stream as a file. Play.

According to an embodiment of the invention, a network instant multimedia transmission method comprises the following steps: (1) Acquiring an instant multimedia stream from a video device.

(2) Transfer a virtual file header to a client.

(3) After transmitting the virtual file header to the client, the instant multimedia stream is transmitted to the client, so that the client plays the instant multimedia stream as a file according to the virtual file header.

In accordance with another embodiment of the present invention, a server includes a stream take-up, a codec, a setter, a head-end transmitter, and a stream transmitter. The stream acquirer is configured to obtain a first multimedia stream from a video device. The codec is configured to convert the first multimedia stream into a second multimedia stream whose file format is one of the preset formats. The setter is configured to set a format field of a virtual file header according to a preset format. The header transmitter is used to transmit the virtual header to the client. The streaming transmitter is configured to transmit the second multimedia stream to the client after transmitting the virtual file header to the client, so that the client views the second multimedia stream according to the format field of the virtual file header Play for a file whose file format is the default format.

Referring to FIG. 1, a flow chart of a method for transmitting a network instant multimedia according to an embodiment of the present invention is shown. The network instant multimedia transmission method 100 starts transmitting the instant multimedia stream by transmitting a virtual file header to the client, so that the client plays the instant multimedia stream as a file according to the virtual file header. The network instant multimedia transmission method 100 includes the following steps: (1) Acquiring an instant multimedia stream from a video device (step 102).

(2) transmitting a virtual file header to a client (step 104).

(3) After transmitting the virtual file header to the client, transmitting the instant multimedia stream to the client, so that the client will stream the instant multimedia according to the virtual file header Played as a file (step 106).

The network instant multimedia transmission method 100 can be implemented in a Java Media Framework (JMF) or other multimedia interface, and the video device can be a webcam or other multimedia device compatible with the multimedia interface. In addition, the network instant multimedia transmission method 100 can transmit an instant multimedia stream to the client through a Hypertext Transfer Protocol (HTTP). In this way, the network instant multimedia transmission method 100 only needs to play an instant multimedia stream through the browser.

In addition, the virtual file header can contain a file size information. After receiving the virtual file header, the client plays the instant multimedia stream according to the file size information. Further, after receiving the virtual file header, the client configures an appropriate buffer according to the file size information for use in playing the instant multimedia stream. In practice, the file size recorded in the file size information can be set according to the length of the instant multimedia streaming time that the client wants to play. If the length of time that the client wants to play the instant multimedia stream is not determined, the file size recorded by the file size information can be set to the maximum value, so that the client can play the instant multimedia stream for a long time.

After the instant multimedia stream reaches the file size recorded by the file size information, the client will consider that the file to be played is downloaded. Therefore, if the client wants to continue playing the instant multimedia stream, the network instant multimedia transmission method 100 needs to transmit another file header first, so that the client considers playing another file. Therefore, the network instant multimedia transmission method 100 can include: (4) After the instant multimedia stream reaches the file size recorded by the file size information, the transmission of the instant multimedia stream to the client is stopped (step 108).

(5) After stopping transmitting the instant multimedia stream to the client, transmitting a resume header to the client (step 110).

(6) after transmitting the resume header to the client, continuing to transmit the instant multimedia stream to the client, thereby causing the client to regard the continuous multimedia stream that continues to be transmitted as a resume file according to the resume header. Play (step 112).

In this way, after the instant multimedia stream reaches the file size recorded by the file size information, the client can be regarded as playing another file and continuing to play the instant multimedia stream.

In addition, the network instant multimedia transmission method 100 can include the format information of the instant multimedia stream in the virtual file header, and enable the client to play the instant multimedia stream according to the format information. Further, a format setting signal is first obtained from a user interface. Then, according to the format setting signal, the format field of the virtual file header is set. In this way, the client can play the instant multimedia stream according to the format field of the virtual file header.

In addition, the network instant multimedia transmission method 100 may also first set the format of the instant multimedia stream transmitted by the video device. In practice, before the instant multimedia stream is obtained, the video device is configured to provide an instant multimedia stream according to the format setting signal obtained from the user interface. In this way, the user can set the format of the instant multimedia stream transmitted by the video device through the user interface.

Referring to FIG. 2, a functional block diagram of a server in accordance with another embodiment of the present invention is shown. The server 200 can transmit a virtual file header to the client 300 first, and cause the client 300 to play the instant multimedia stream transmitted by the server 200 as an archive. Among them, the server 200 can pass through the Java Media Framework (JMF) or other multimedia interface. Work. Further, the server 200 includes a stream acquirer 210, a codec 220, a setter 230, and a transfer module 240. The stream acquirer 210 is configured to obtain a first multimedia stream from a video device 400. The video device 400 can be a webcam, and the video device 400 can be directly connected to the server 200 or connected to the server 200 through the network. The codec 220 is configured to convert the first multimedia stream into a second multimedia stream whose file format is one of the preset formats. The setter 230 is configured to set a format field of a virtual file header according to a preset format. The transmitting module 240 is configured to transmit the virtual file header and the second multimedia stream to the client 300.

Referring to Figure 3, an embodiment of the transfer module 240 of Figure 2 is illustrated. Further, the transfer module 240 includes a head conveyor 241 and a stream transmitter 242. The header transmitter 241 is configured to transmit the virtual header to the client 300. The stream transmitter 242 is configured to transmit the second multimedia stream to the client 300 after transmitting the virtual file header to the client 300. The stream transmitter 242 can transmit the second multimedia stream to the client 300 through the hyper file transfer protocol. In this way, the client 300 plays the second multimedia stream as one of the files in the preset format according to the format field of the virtual file header. In addition, since the second multimedia stream is transmitted to the client 300 through the hyper-file transfer protocol, the client 300 can play the second multimedia stream by using the browser without separately installing the playback software.

In addition, the virtual file header may include a file size field, so that after receiving the virtual file header, the client 300 plays the second multimedia stream according to the file size field of the virtual file header. Therefore, referring to FIG. 2, the setter 230 can include a file size setter 231 for setting the file size field of the virtual file header according to a virtual file size. Client 300 receives virtual header After that, the second multimedia stream is played according to the file size field of the virtual file header. Further, after receiving the virtual file header, the client 300 can configure an appropriate buffer according to the file size field of the virtual file header for use in playing the second multimedia stream. In practice, the file size setter 231 can set the file size recorded in the file size information according to the length of time that the client 300 wants to play the instant multimedia stream. If the length of time that the client 300 wants to play the instant multimedia stream is not determined, the file size setter 231 can set the file size recorded by the file size information to the maximum value, so that the client 300 can play the instant multimedia string for a long time. flow.

In addition, the transmitting module 240 may transmit another header to the client 300 after the second multimedia stream reaches the virtual file size, so that the client 300 regards the second multimedia stream transmitted next as Play another file. Referring to FIG. 3, the transmission module 240 can include a stop transmitter 243, a resume header 244, and a repeater 245. The stop transmitter 243 is configured to cause the stream transmitter 242 to stop transmitting the second multimedia stream to the client 300 after the second multimedia stream reaches the virtual file size. The resume header 244 is configured to transmit a resume header to the client 300 after the stream transmitter 242 stops transmitting the instant multimedia stream to the client 300. The regenerator 245 is configured to continue to transmit the second multimedia stream to the client 300 after transmitting the resume header to the client 300. In this way, the client 300 plays the second multimedia stream that continues to be transmitted as a resume file according to the resume header.

Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Web instant multimedia transmission method

102~112‧‧‧Steps

200‧‧‧Server

210‧‧‧Streaming Receiver

220‧‧‧ codec

230‧‧‧Setter

231‧‧‧File Size Setter

240‧‧‧Transmission module

241‧‧‧ head conveyor

242‧‧‧Stream Transmitter

243‧‧‧stop conveyor

244‧‧‧Continuous transmission head

245‧‧‧Continuous transmitter

300‧‧‧Client

400‧‧‧Video installation

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. The detailed description of the drawings is as follows. FIG. 1 is a schematic diagram of a network instant multimedia transmission method according to an embodiment of the invention. Flow chart.

FIG. 2 is a functional block diagram of a server according to another embodiment of the present invention.

FIG. 3 illustrates an embodiment of the transfer module 240 of FIG. 2.

100‧‧‧Web instant multimedia transmission method

102~112‧‧‧Steps

Claims (6)

A network instant multimedia transmission method includes: acquiring an instant multimedia stream from a video device; transmitting a virtual file header to a client; transmitting the virtual multimedia stream to the client after transmitting the virtual file header to the client The client, causing the client to play the instant multimedia stream as a file according to the virtual file header, wherein the virtual file header includes a file size information, so that the client receives the virtual After the file header, the instant multimedia stream is played according to the file size information; after the instant multimedia stream reaches the file size recorded by the file size information, the instant multimedia stream is stopped from being transmitted to the client; After the instant multimedia stream is streamed to the client, transmitting a resume header to the client; and after transmitting the resume header to the client, continuing to transmit the instant multimedia stream to the client, thereby The client is caused to play the instant multimedia stream that continues to be transmitted as a resume file according to the resume header. The network instant multimedia transmission method of claim 1, further comprising: obtaining a format setting signal from a user interface; and setting a signal according to the format, setting a format field of the virtual file header, and causing the client to The instant multimedia stream is played according to the format field of the virtual file header. The network instant multimedia transmission method of claim 1, further comprising: obtaining a format setting signal from a user interface; and, before obtaining the instant multimedia stream, causing the video device to set a signal according to the format, providing the Instant multimedia streaming. The network instant multimedia transmission method of claim 1, wherein the instant multimedia stream is transmitted to the client through a hyper-file transfer protocol. A server includes: a stream acquirer for obtaining a first multimedia stream from a video device; and a codec for converting the first multimedia stream to a file format a second multimedia stream of a preset format; a setter for setting a format field of a virtual file header according to the preset format, wherein the setter includes: a file size setter for The virtual file size sets a file size field of the virtual file header; a header transmitter for transmitting the virtual file header to the client; and a stream transmitter for transmitting the virtual file header to the client And transmitting the second multimedia stream to the client, so that the client considers the second multimedia stream as the file format as the preset format according to the format field of the virtual file header. Playing in one file, wherein after receiving the virtual file header, the client plays the file according to the file size field of the virtual file header. a second multimedia stream; a stop transmitter, after the second multimedia stream reaches the virtual file size, causing the stream transmitter to stop transmitting the second multimedia stream to the client a continuous header device for transmitting a continuous transmission header to the client after the streaming transmitter stops transmitting the second multimedia stream to the client; and a regenerator for using After the resume header is transmitted to the client, the second multimedia stream is continuously transmitted to the client, so that the client continues according to the resume header. The transmitted second multimedia stream is played as a resume file. The server of claim 5, wherein the stream transmitter transmits the second multimedia stream to the client via a hyper-file transfer protocol.