TWI392369B - Method for processing live multimedia stream and system thereof - Google Patents

Description

Instant multimedia stream processing method and system thereof

The present invention relates to a multimedia processing method and system thereof, and more particularly to an instant multimedia processing method and system thereof.

With the rapid development of technology, multimedia processing technology has attracted attention and developed rapidly. Among them, the processing technology of instant multimedia (such as TV, radio and instant monitoring) is closely related to the life of modern people, and has a vast market in the world.

Since television and broadcast programs have fleeting features, in the past, users recorded the program by means of a video recorder or a tape recorder. Subsequently, the function of time shift is developed, so that the user can watch the previous program at any time while watching (listening to) the live program. Further, when the function of time shifting is activated, the instant multimedia stream carrying the television program or the broadcast program is compressed into a file and written into a Stream Buffer Engine (SBE). When watching (listening to) an instant program or a previous program, the corresponding file is taken out from the stream buffer engine for playback. In this way, when watching (listening to) the live program, it is necessary to wait for the compressed file and the action of writing the stream buffer engine, thereby causing a great delay time. Especially when watching (listening to) the live broadcast of the game, the delay of time is even more unbearable for the audience.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an instant multimedia stream processing method and system thereof for reducing the time delay of playing an instant multimedia stream while still having the function of replaying a previous program at any time.

According to an embodiment of the invention, an instant multimedia stream processing method includes the following steps: receiving an instant multimedia stream. Play live multimedia streaming directly. Convert instant multimedia streaming to a multimedia file. Write the multimedia file to a storage component. Received a specified time from a user interface. The multimedia file in the storage component is taken out and played at a specified time.

In accordance with another embodiment of the present invention, an instant multimedia system includes a storage component, a front end device, and a back end device. The front end device includes a capture module and a conversion module. The capture module captures an instant multimedia stream. The conversion module converts the instant multimedia stream into a multimedia file and writes the multimedia file to the storage element. The backend device includes a user interface, an instant play module, a replay module, and a selection module. The instant play module plays instant multimedia streaming. The replay module obtains a specified time from the user interface, and takes out and plays the multimedia file in the storage component at a specified time. The selection module obtains a selection signal from the user interface, and starts one of the instant play module and the replay module according to the selection signal.

Please refer to FIG. 1 , which is a flowchart of an instant multimedia processing method according to an embodiment of the present invention. The instant multimedia processing method directly plays the instant multimedia stream, and additionally converts the instant multimedia stream into a file to write to the storage element. When the user wants to watch the previous program, the user removes the self-storage component for playback. The instant multimedia processing method 100 includes the steps of receiving an instant multimedia stream (step 110) and playing the instant multimedia stream directly (step 120). The instant multimedia stream can be an instant video stream, an instant audio stream, a live video stream or other types of instant multimedia streams. In addition, when the instant multimedia stream is a transport stream (TS) with multiple channels, step 120 may first receive a specified channel from the user interface, and then filter out a channel from the instant multimedia stream according to the specified channel. Stream and play only the filtered channel stream.

Next, the instant multimedia stream is converted to a multimedia file (step 130) and the multimedia file is written to a storage element (step 140). The step 140 can write the multimedia file into one of the storage buffers (Circuit Buffer). Therefore, the characteristics of the ring buffer can be utilized to remove the old multimedia file to store the new multimedia file when the storage space of the ring buffer is used up. In addition, when the format of the instant multimedia stream is a Transport Stream (TS), the step 130 may convert the instant multimedia stream into a multimedia file of the same application transport stream format. In this way, by step 110 to step 140, it can be avoided that the playback of the instant multimedia stream (step 120) is delayed due to the execution of step 130 and step 140.

When the instant multimedia stream is converted into a multimedia file (step 130), the instant multimedia stream can be compressed into a multimedia file having a smaller file size. For example, when the received instant multimedia stream is analog signal, the instant multimedia stream may be first compressed into a program stream (PS) and then converted into a multimedia file of the application transport stream format. In addition, when the received instant multimedia stream is a digital signal, the multimedia stream can be converted into other file formats with higher compression ratio, and the multimedia stream is compressed into a multimedia file with a smaller file size. In this way, the multimedia file can be made smaller in file size. Thus, a storage element of the same size can be stored for a long time multimedia file.

Next, when a specified time is received from a user interface (step 150), the multimedia file of the storage element is taken out and played back from the designated time (step 160). When converting the instant multimedia stream to the multimedia file (step 130), one time information of the instant multimedia stream can be attached to the multimedia file as the multimedia file in the storage component is taken out and played at the specified time (step 160). ) based on. In addition, when the multimedia file in the storage component is applied to the transport stream format, step 160 may receive a specified channel from the user interface, and then take the multimedia file in the storage component from the specified time and take it out according to the designated channel. The multimedia file filters out a channel file for playback.

In this way, while reducing the delay of playing the instant multimedia stream, the multimedia stream of the previous time period can still be replayed by storing the converted multimedia file in the component. In addition, when the user generates a pause signal through the user interface and pauses playing the instant multimedia stream, the time for stopping the playback can be recorded as the designated time. Then, when the user wants to continue watching later, the multimedia file in the storage element is played back from the specified time, thereby realizing the function of time shifting.

Please refer to FIG. 2, which is a functional block diagram of an instant multimedia system according to another embodiment of the present invention. The instant multimedia system divides the instant multimedia stream into two channels for processing. One of the channels is used to directly play an instant multimedia stream for instant playback. The other channel continuously converts the instant multimedia stream into a file and writes it to the storage element for use in replay.

The instant multimedia system includes a storage component 200, a front end device 300, and a back end device 400. The front end device 300 includes a capture module 310 and a conversion module 320. The capture module 310 captures an instant multimedia stream. The instant multimedia stream can be an instant video stream, an instant audio stream, a live video stream or other types of instant multimedia streams. The conversion module 320 converts the instant multimedia stream into a multimedia file and writes the multimedia file to the storage element 200. The conversion module 320 can convert the instant multimedia stream into a multimedia file of the same application transport stream format when the format of the instant multimedia stream is a transport stream. In addition, a ring buffer can be cut out in the storage component 200 to be written into the storage space of the multimedia file as the conversion module 320. Thus, the characteristics of the ring buffer can be utilized to remove the old multimedia file to store the new multimedia file when the storage space of the ring buffer is used up.

When the conversion module 320 converts the instant multimedia stream into a multimedia file, the conversion module 320 can compress the instant multimedia stream into a multimedia file with a small file size. For example, when the instant multimedia stream captured by the capture module 310 is an analog signal, the conversion module 320 may first compress the instant multimedia stream into a program stream (Program Stream, PS) and then convert the application into an application stream. A multimedia file in the transport stream format. In addition, when the instant multimedia stream captured by the capture module 310 is a digital signal, the conversion module 320 can convert the multimedia stream into another file format with a higher compression ratio, and compress the multimedia stream into a file size. Smaller multimedia files. In this way, the multimedia file can be made smaller in file size. Thus, the same size storage element 200 can be used to store multimedia files for a longer period of time.

The backend device 400 includes a user interface 410, an instant play module 420, a replay module 430, and a selection module 440. The instant play module 420 establishes a connection with the capture module 310 through one of the channels to play an instant multimedia stream. The replay module 430 establishes a connection with the storage component 200 through another channel for obtaining a specified time from the user interface 410, and fetches and plays the multimedia file in the storage component 200 from the specified time. When the conversion module 320 converts the instant multimedia stream into the multimedia file, the conversion module 320 can add one time information of the instant multimedia stream to the multimedia file, and the replay module 430 automatically specifies the multimedia file in the storage component 200. The basis for time to take out and play.

The selection module 440 obtains a selection signal from the user interface 410, and activates one of the instant play module 420 and the replay module 430 to play according to the selection signal. In this way, when the user selects and activates the instant play module 420 through the user interface, the backend device 400 can directly play the instant multimedia stream through one of the channels. Therefore, the playback of the instant multimedia stream is delayed due to the operation of the conversion module 320. However, when the user selects to activate the replay module 430 through the user interface, the backend device 400 can still cause the backend device 400 to play the previously retrieved multimedia stream by storing the multimedia file in the component through another channel.

When the Microsoft Directshow is implemented as a real-time multimedia system, the Sink Graph module can be applied as the front-end device 300, and the Source Graph module is applied as the back-end device 400. In addition, the instant play module 420 and the replay module 430 can be implemented in two different Directshow Filters. At this time, the instant multimedia stream and the multimedia file taken out from the storage component 200 need to be transmitted to the instant play module 420 and the replay module 430 through different channels. In addition, the instant play module 420 and the replay module 430 can also be implemented in a library of the same Directshow Filter. At this time, the instant multimedia stream and the multimedia file taken out from the storage component 200 are also transmitted to the same Directshow Filter through different channels to provide the instant play module 420 and the replay module 430 respectively for playing.

In addition, the backend device 400 can include a network module 450 or a video module 460. The network module 450 broadcasts the instant multimedia stream being streamed or the multimedia file that is being taken out through the network. The video module 460 stores the instant multimedia stream being streamed or the multimedia file being downloaded as a transcription file. In this way, the instant multimedia stream or multimedia file being played can be shared to other users or stored through the network.

When the instant multimedia stream is a multi-channel transport stream (TS), the instant play module 420 can include a filter 421 for receiving a specified channel from the user interface 410, and then filtering out the specified from the multimedia stream. One of the channels of the channel is streamed and the channel stream is played. In addition, when the conversion module 320 converts the instant multimedia stream into a multimedia file of the application transport stream format and writes it to the storage component 200, the replay module 430 may also include a filter 431. The filter 431 of the replay module 430 receives a specified channel from the user interface 410, and then filters out a channel file of a designated channel from the retrieved multimedia file for playback.

It will be apparent from the above-described embodiments of the present invention that the application of the present invention has the following advantages. When the live program is played, the received instant multimedia stream is directly played, thereby avoiding the delay caused by the transfer and writing of the storage element. In addition, the received instant multimedia stream is continuously converted into a file for writing to the storage element. In this way, the previous program can be replayed by storing the files in the component, and the time shifting function can be performed.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100. . . Instant multimedia processing method

110~160. . . step

200. . . Storage element

300. . . Front end device

310. . . Capture module

410. . . user interface

420. . . Instant play module

430. . . Replay module

440. . . Selection module

450. . . Network module

320. . . Conversion module

400. . . Backend device

460. . . Video module

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood.

1 is a flow chart of an instant multimedia processing method in accordance with an embodiment of the present invention.

FIG. 2 is a functional block diagram of an instant multimedia system according to another embodiment of the present invention.

100. . . Instant multimedia processing method

110~160. . . step

Claims (9)

An instant multimedia stream processing method includes: receiving an instant multimedia stream; directly playing the instant multimedia stream; converting the instant multimedia stream into a multimedia file, wherein the format of the instant multimedia stream is a transport stream ( Transport Stream (TS), converting the instant multimedia stream to the multimedia file in the application transport stream format; writing the multimedia file to a storage element; receiving a specified time from a user interface; and storing the storage element The multimedia file is taken out and played at the specified time, wherein the step of taking out and playing the multimedia file in the storage component from the specified time comprises: receiving a designated channel from the user interface; The multimedia file is taken out from the designated time; according to the designated channel, a channel file is filtered out from the extracted multimedia file; and the channel file is played. The instant multimedia stream processing method of claim 1, wherein the converting the instant multimedia stream into the multimedia file comprises: compressing the instant multimedia stream into the multimedia file. The instant multimedia stream processing method of claim 1, wherein the converting the instant multimedia stream to the multimedia file comprises: attaching one time information of the instant multimedia stream to the multimedia file as the storing The basis for the multimedia file in the component to be taken out and played at the specified time. The instant multimedia stream processing method of claim 1, wherein when the instant multimedia stream is a transport stream, the step of directly playing the instant multimedia stream comprises: receiving a specified channel from the user interface; Specifying a channel to filter out a stream of channels from the instant multimedia stream; and playing the stream of the channel. The instant multimedia stream processing method of claim 1, wherein the multimedia file is written into a loop buffer of the storage element. An instant multimedia system comprising: a storage component; a front end device comprising: a capture module for capturing an instant multimedia stream; and a conversion module for converting the instant multimedia stream into a multimedia The file is written to the storage component; and a backend device includes: a user interface; an instant play module for playing the instant multimedia stream; and a replay module from the user interface Obtaining a specified time, and taking out and playing the multimedia file in the storage component from the specified time, wherein the replay module includes: a filter, when the instant multimedia file is a transport stream (TS), from the use Receiving a designated channel, extracting a channel file of the designated channel from the extracted multimedia file, and playing the channel file; and selecting a module to obtain a selection signal from the user interface, and according to the Selecting a signal activates the instant play module and one of the replay modules for playback. The instant multimedia system of claim 6, wherein the instant play module comprises: a filter, when the instant multimedia stream is a transport stream (TS), receiving the designated channel from the user interface, and more The multimedia stream filters out the channel stream of the designated channel and plays the channel stream. The instant multimedia system of claim 6, wherein the backend device further comprises: a network module for broadcasting the instant multimedia being played through the network Stream or the multimedia file that was taken out. The instant multimedia system of claim 6, wherein the backend device further comprises: a video module, configured to store the instant multimedia stream being played or the retrieved multimedia file as a transcription file.