WO2020048491A1 - Method and terminal for playing streaming media - Google Patents

Abstract

The present application discloses a method and a terminal for playing streaming media. The method and terminal are used to solve the existing issue of the prior art in which there is a small play count and lack of diverse streaming media content when streaming media is played on a broadcast television. According to an embodiment of the present application, upon monitoring that there has been a change in a PMT corresponding to a broadcast television channel currently being played, a determination is made about whether a streaming media descriptor exists in the PMT, the streaming media descriptor comprising a playing time point, a playing duration, and a playing address of corresponding streaming media. If the streaming media descriptor exists and the broadcast television channel has not changed prior to reaching the playing time point, then the streaming media corresponding to the streaming media descriptor is played when the playing time point is reached. There can be multiple streaming media descriptors in a PMT corresponding to a broadcast television channel, that is, there can be multiple playing time points, and different streaming media descriptors can correspond to different streaming media content, such that streaming media can be played multiple times on the broadcast television channel, and content of streaming media can be diverse.

Description

Method and terminal for playing streaming media

Cross-reference to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on September 5, 2018, with an application number of 201811031356.6, and the application name is "A Method and Terminal for Streaming Media Playback", the entire contents of which are incorporated herein by reference. In this application.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method and a terminal for playing streaming media.

Background technique

With the development of network technology and streaming media technology, more and more streaming media content is distributed and distributed through the network to provide users with flexible viewing requirements.

In recent years, more and more radio and television users have migrated from traditional radio and television to network television, but the unique wide-ranging, low-latency, and low-cost technical characteristics of radio and television make them irreplaceable in the field of distributing television programs. the value of.

Related technology When inserting streaming media content in broadcast television, the smart TV manufacturer usually plays the streaming media content to the user during the system startup process, and the streaming media content can be updated through a network. However, in this way, the inventors realized that because the streaming media content was played for the user when the TV was turned on, the number of times of playback was less; and because the streaming media content was set by the TV manufacturer, the streaming media content was single.

Summary of the Invention

The present application provides a method and a terminal for playing streaming media, which can be used to solve the problems of small number of playbacks and single streaming media content when playing streaming media on broadcast television.

In a first aspect, a method for playing a streaming media provided by an embodiment of the present application includes:

After monitoring that the PMT corresponding to the broadcast television channel being changed changes, it is determined whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time, playback duration, and playback address of the corresponding streaming media;

If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor arrives, when the playback time reaches the playback time corresponding to the streaming media descriptor, stream media.

In some embodiments, the playing the streaming media corresponding to the streaming media descriptor when the playback time arrives includes:

Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or

Download the streaming media corresponding to the streaming media descriptor according to the playback address before the playback time arrives, and play when the playback time arrives.

The above method provides two ways to play streaming media. Method one is to play streaming media based on the playback address in the streaming media descriptor. Method two is to download and stream the media descriptor based on the playback address in the streaming media descriptor before playback. Play the corresponding streaming media.

In some embodiments, playing the streaming media corresponding to the streaming media descriptor when the playback time arrives further includes:

When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started.

In the above method, when the playback time in the streaming media descriptor arrives, a timer set according to the playback market in the streaming media descriptor is displayed and started, so that the playback duration of the streaming media and the streaming can be displayed on the terminal intuitively. How long can the media finish playing.

In some embodiments, the method further includes:

When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel.

In the above method, if the broadcast and television channel changes during the streaming media playing process, it is necessary to switch to the changed broadcast and television channel and play the broadcast television or streaming media according to the PMT corresponding to the changed broadcast and television channel to complete the streaming. Switch from media to broadcast television, or switch from streaming media to streaming media.

In some embodiments, after playing the streaming media corresponding to the streaming media descriptor, the method further includes:

If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT.

The above method provides a method for switching from streaming media to broadcast television after streaming media playback ends. The PMT corresponding to the broadcast television channel being changed changes, and there is no streaming media descriptor in the changed PMT. For audio descriptors and / or video descriptors broadcast on broadcast television, after the streaming media playback ends, the broadcast television is played, thereby completing the process of switching from playing streaming media to playing broadcast television.

In a second aspect, a terminal for streaming media playback provided by an embodiment of the present application includes: at least one processing unit and at least one storage unit, where the storage unit stores program code, and when the program code is When executed by the processing unit, the processing unit is caused to perform the following processes:

After monitoring that the PMT corresponding to the broadcasting television channel being changed changes, it is determined whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time, playback duration, and playback address of the corresponding streaming media;

If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor arrives, when the playback time reaches the playback time corresponding to the streaming media descriptor, stream media.

In some implementations, the processing unit is specifically configured to:

Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or

Download the streaming media corresponding to the streaming media descriptor according to the playback address before the playback time arrives, and play when the playback time arrives.

In some implementations, the processing unit is further configured to:

When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started.

In some implementations, the processing unit is further configured to:

When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel.

In some implementations, the processing unit is further configured to:

If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT.

In a third aspect, a terminal for streaming media playback provided by an embodiment of the present application includes:

Judgment module: It is used to determine whether there is a streaming media descriptor in the PMT after monitoring that the PMT corresponding to the broadcast television channel is changing, and the streaming media descriptor includes the playback time and playback duration of the corresponding streaming media. And playback address;

A playback module: for playing the streaming media descriptor when the broadcast media channel does not change before the playback time in the streaming media descriptor is reached, and Streaming media corresponding to the media descriptor.

In a fourth aspect, an embodiment of the present application further provides a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of the method described in the first aspect are implemented.

In addition, for the technical effects brought by any of the implementation manners in the second to fourth aspects, refer to the technical effects brought by the different implementation manners in the first aspect, and details are not described herein again.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings according to these drawings without paying creative labor.

FIG. 1 is a schematic flowchart of a method for playing streaming media according to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a complete method for streaming media playback according to an embodiment of the present application; FIG.

3 is a schematic structural diagram of a first terminal for performing streaming media playback according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a second terminal for streaming media playback according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solution, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

At present, when a digital TV broadcasts a TV program, it first locks the frequency point where the program is located, and then obtains the PMT (Program Map Table) corresponding to the frequency point, and then obtains the audio PID (Packet and Identifier, packet identification) from the PMT. Code), video PID, filtering and decoding the data corresponding to the audio PID and video PID, and finally playing the program according to the filtered and decoded audio PID and video PID.

If you want to insert streaming media when broadcasting a TV program, such as inserting a 10-second advertisement during the broadcast of a TV program, you can insert a streaming media descriptor in the PMT, and then based on the playback time in the streaming media descriptor, Playing time and playing address play streaming media.

After the streaming media playback is over, the radio and television programs must continue to be played. For example, a 10-second streaming advertisement is inserted during the broadcast of the TV series of the radio and television. After the 10-second streaming advertisement is over, the broadcast of the TV series of the radio and television is continued.

The execution subject in the embodiment of the present application may be a smart TV.

The application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those of ordinary skill in the art may know that with the new application scenarios, It appears that the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

In view of the above application scenarios, the embodiments of the present application are described in further detail below with reference to the accompanying drawings.

As shown in FIG. 1, a method for playing a streaming media provided by an embodiment of the present application includes the following steps:

S100. After monitoring that the PMT corresponding to the broadcast television channel being changed changes, determine whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes a playback time, a playback duration, and a playback address of the corresponding streaming media. ;

S101. If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor reaches, playing the streaming media descriptor with the streaming media descriptor when the playback time arrives. Corresponding streaming media.

In the embodiment of the present application, after a change in the PMT corresponding to the broadcast television channel being monitored is detected, it is determined whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time, playback duration, and playback of the corresponding streaming media Address, if the streaming media descriptor exists, and the broadcast television channel does not change before the playback time in the streaming media descriptor arrives, the streaming media corresponding to the streaming media descriptor is played when the playback time arrives. Because a streaming media descriptor exists in the PMT corresponding to the broadcast television channel, and the streaming media corresponding to the streaming media descriptor is played according to the playback time in the streaming media descriptor, where the streaming media existing in the PMT corresponding to the broadcast television channel There can be multiple descriptors, that is, there can be multiple playback times, and different streaming media descriptors can correspond to different streaming media content, so that during the broadcast TV broadcast process, the streaming media can be played multiple times, and the streaming media content can be Rich and varied.

Among them, PMT is a program mapping table. Through this table, information contained in a program can be obtained, such as which streams are composed of the program, the types of these streams (video, audio, data), and the PIDs corresponding to each stream in the program are specified. And the PID corresponding to the program's PCR (Program Clock Reference).

The PMT contains data such as PIDs of all video data in the current channel, PIDs of all audio data in the current channel, and PIDs of other data associated with the current channel.

As shown in Table 1, it is the data structure table of the PMT, and also the meaning of the fields in the PMT. The first column in Table 1 is the syntax, the second column is the number of bits, and the third column is the mnemonic. For example, table_id represents the ID of the PMT, and the number of bits of the PMT ID is 8 bits; the section_syntax_indicator represents the PMT syntax flag, and the number of bits is 1 bit.

Table 1

In Table 1, program_info_length represents the program information length, and this field represents the total length of the PMT descriptor.

For the descriptors in the PMT, there will be multiple program descriptions in the PMT. Each program description corresponds to at least one descriptor tag value. The actual code stream determines which program descriptions exist in a PMT. As shown in Table 2, it is the program description included in the PMT and the descriptor tag value corresponding to each program description. As can be seen from the last row "User Private" in Table 2, the descriptor tag values of 64 to 235 are not occupied, so in a specific implementation, the streaming media descriptor may be the descriptor tag values of 64 to 235. Any one of them.

Table 2

descriptor_tag TS PS Identification 0 n / a n / a Reserved 1 n / a n / a Reserved 2 X X video_stream_descriptor 3 X X audio_stream_descriptor 4 X X hierarchy_descriptor 5 X X registration_descriptor 6 X X data_stream_alignment_descriptor 7 X X target_background_grid_descriptor 8 X X Video_window_descriptor 9 X X CA_descriptor 10 X X ISO_639_language_descriptor 11 X X System_clock_descriptor 12 X X Multiplex_buffer_utilization_descriptor 13 X X Copyright_descriptor 14 X Zh Maximum_bitrate_descriptor 15 X X Private_data_indicator_descriptor 16 X X Smoothing_buffer_descriptor 17 X Zh STD_descriptor 18 X X IBP_descriptor 19-26 X Zh Defined ISO / IEC13818-6 27 X X MPEG-4_video_descriptor 28 X X MPEG-4_audio_descriptor 29 X X IOD_descriptor 30 X Zh SL_descriptor 31 X X FMC_descriptor 32 X X External_ES_ID_descriptor 33 X X MuxCode_descriptor 34 X X FmxBufferSize_descriptor 35 X Zh MultiplexBuffer_descriptor 36-63 n / a n / a ITU-T Rec.H.222.0 | ISO / IEC13818-1Reserved 64-255 n / a n / a UserPrivate

It should be noted that the PMT mainly provides the mapping relationship between the program number and the program description, and the program description contains information such as audio, video, subtitles, and whether it is encrypted.

Because the PMT corresponding to the broadcast TV channel may change, such as from encrypted stream to non-encrypted stream, from non-encrypted stream to encrypted stream, radio and television programs from one sound to two sounds, etc., the terminal will periodically Monitor PMT, such as once every 100ms.

In the embodiment of the present application, after a change in the PMT corresponding to the broadcast television channel being monitored is monitored, it is determined whether a stream media descriptor exists in the changed PMT, and the stream media descriptor includes the playback time of the corresponding stream media, Playing time and playing address.

Because the radio and television channels normally broadcast radio and television programs, the PMT will change when the broadcast and television program is switched to the playback of streaming media, and there will be a stream descriptor in the changed PMT.

It should be noted that the PMT containing the streaming media descriptor is previously configured in advance. When the terminal plays a broadcast TV program, the configured PMT containing the streaming media descriptor is pushed to the terminal at a preset time, such as in Push the PMT containing the streaming media descriptor to the terminal 2 seconds before playing the streaming media.

In implementation, according to the correspondence between the descriptors and descriptor tag values in Table 2, in order not to conflict with other descriptors in Table 2, the descriptor tag value of the streaming media descriptor may be set to 64.

Table 3 shows a data structure table of a streaming media descriptor according to an embodiment of the present application. In Table 3, the descriptor tag value corresponding to the streaming media descriptor is 64, the number of bits occupied by the descriptor tag value is 8; the number of bits occupied by the descriptor length is 8; the number of bits occupied by the playback time of the streaming media Is 40; the number of bits occupied by the streaming duration is 16 and the number of bits occupied by the streaming address length is 8.

table 3

As can be seen from Table 3, the streaming media descriptor contains the playback time, playback duration, and playback address.

The playback time is the time to start playing the streaming media. Since the playback of streaming media is played during the broadcast of the radio and television programs, the streaming media descriptor includes the time to start playing the streaming media, such as starting playback at 7:10. stream media.

Streaming media playback time can be encoded using the standard UTC (Universal Time Coordinated), also known as Greenwich Mean Time, and MJD (Modified Julian Data, date code) encoding methods. The number of digits is converted to a specific time, such as X year X month X day X hour X minute X second.

The playing time, that is, the playing time of the streaming media. Since the broadcasting and TV programs will continue to be played after the streaming media ends, the streaming media descriptor includes the playing time of the streaming media, for example, the playing time is 10 seconds.

The playing time of the streaming media is a decimal number, and the unit is second, which can be obtained by converting the occupied digits in Table 3, that is, converting binary to decimal.

Play address, that is, the address for playing streaming media online, or the address for downloading streaming media before playing the streaming media. Because streaming media is a media format that is played on the Internet (network) by streaming, the streaming media descriptor It contains the address for playing streaming media. When the playback time arrives, the streaming media is played according to the playback address.

The playback address of the streaming media is a specific character string, and the specific character string can be determined according to the playback address data.

It is determined that there is a streaming media descriptor in the changed PMT, and the broadcast and television channel does not change before the playback time in the streaming media descriptor reaches, then when the playback time in the streaming media descriptor reaches, The streaming media corresponding to the streaming media descriptor.

Different radio and television channels have different PMTs. If the radio and television channels change, the terminal will play according to the PMT corresponding to the changed radio and television channels. When the broadcast time does not change, the broadcast and television channels will not change. Play streaming media when the play time arrives.

If the broadcast and television channels change before the streaming time arrives, but when the streaming time arrives, and then return to the radio and television channels before the change, you can also play the streaming media.

For example, after the PMT corresponding to the broadcast TV channel 1 is changed, it is PMT1. There is a streaming media descriptor in PMT1. The playback time in this streaming media descriptor is 7:10, and before 7:10, the broadcast TV The channel was switched to broadcast TV channel 2, but at 7:10, the broadcast TV channel was switched back to broadcast TV channel 1. At this time, the streaming media corresponding to the streaming media descriptor in PMT1 can be played.

When the playback time in the streaming media descriptor arrives, there are two ways to play the streaming media corresponding to the streaming media descriptor:

Method 1: When the playback time arrives, the streaming media corresponding to the streaming media descriptor is played according to the playback address in the streaming media descriptor.

It should be noted that the method for playing streaming media is online playing. When playing streaming media online, it is not necessary to download the streaming media to be played in advance before the playback time arrives, so as not to occupy the terminal's memory.

Manner 2: Before the playback time arrives, download the streaming media corresponding to the streaming media descriptor according to the playback address in the streaming media descriptor, and play it when the playback time arrives.

It should be noted that the way to play streaming media is to download and play the streaming media in advance, that is, to download the streaming media according to the playing address before the streaming media playing time arrives. Because the streaming media is downloaded to the terminal in advance, the streaming media is played. In the media process, there will be no stalling because of the bad network.

When the streaming media is played through the second method, after the streaming media playback ends, the downloaded streaming media may be deleted immediately, or it may not be deleted temporarily. The terminal periodically deletes the streaming media stored in the terminal, such as once every 24 hours.

When the streaming media corresponding to the streaming media descriptor is played when the playback time arrives, a timer that is often set according to the playback time in the streaming media descriptor may be displayed and started on the terminal when the playback time arrives.

Among them, the timer is used to display the duration of streaming media playback, which can be either a countdown or a timing. For example, when the streaming media playback duration is 10 seconds, when the playback time reaches, the terminal can display from 10 to 0 and end. It can be displayed from 0 to 10.

In implementation, when the started timer counts down, you can use this timer to notify the user how long the streaming media can be played, such as 10 seconds. At this time, the user can switch channels arbitrarily. After 10 seconds, the user can switch again. Go to this channel to watch radio and television programs.

It should be noted that the timer set according to the playing time in the streaming media descriptor is displayed and started. In addition to displaying and starting when the playing time reaches, it can also display and start the first timer before the playing time reaches. A second timer is displayed and started upon arrival. At this time, the first timer is set according to a preset duration before the playback time in the streaming media descriptor reaches, and the second timer is set according to the playback duration in the streaming media descriptor.

For example, a first timer is displayed and started 5 seconds before the streaming playback time reaches, and the first timer is set according to a preset duration of 5 seconds, and a second timer is displayed and started when the streaming playback time reaches. Set it according to the playback duration of 10 seconds in the stream descriptor. When the streaming time is 7 o'clock, the first timer starts at 6:55 seconds and counts down. After the 5 second countdown ends, the second timer is displayed and started at 7 o'clock in the streaming time. The countdown counts down to 10 The end of the second and the streaming playback ends.

The first timer here can accurately know the time of streaming media when a user watches a broadcast television program.

When playing streaming media, there is also a possibility that the user switches the broadcast TV channel while watching the streaming media playback. If the user switches the broadcast TV channel, the terminal will play the broadcast TV program or the PMT corresponding to the changed broadcast TV channel. stream media.

There may be streaming media descriptors in the PMT corresponding to the changed radio and television channels, and there may also be audio descriptors and / or video descriptors for broadcasting television programs, so the changed radio and television channels may play streaming media. Radio and TV programs may also be played.

For example, at this time, the broadcast TV channel that plays streaming media is broadcast TV channel 1. If the user switches the broadcast TV channel to broadcast TV channel 2, the terminal obtains the PMT information in PMT2 corresponding to the broadcast TV channel 2 and resolves that it is useful in PMT2 Audio descriptors and video descriptors for broadcast TV programs, if there is no stream descriptor, the terminal will play broadcast TV according to PMT2;

If the user switches the radio and television channel to radio and television channel 3, the terminal obtains the PMT information in PMT3 corresponding to radio and television channel 3, and analyzes that there is a stream descriptor in PMT3, and there is no audio descriptor and / Or video descriptor, the terminal plays the streaming media according to the PMT3;

If the user switches the radio and television channel to the radio and television channel 4, the terminal obtains the PMT information in the PMT4 corresponding to the radio and television channel 4, and resolves to the existence of both a stream descriptor and an audio descriptor for broadcasting of the television program And / or video descriptor, the terminal performs streaming media playback or broadcast TV program playback according to PMT4. For example, if the time for switching to broadcast TV channel 4 is streaming media playback time, then streaming media playback is performed; switching to broadcast TV channel 4 If the time is not the playback time of the streaming media, the broadcast TV program is played.

If the playback of the streaming media ends, you can switch to the broadcast TV broadcast. When switching from streaming media playback to broadcast TV broadcast, the PMT corresponding to the broadcast TV channel being broadcast will change, and the changed PMT will replace the PMT before the change.

The terminal monitors that the PMT corresponding to the broadcasting TV channel being changed changes, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors used for broadcasting TV programs. After the media playback ends, broadcast television is played according to the audio descriptors and / or video descriptors present in the changed PMT.

As shown in FIG. 2, it is a schematic flowchart of a complete method for playing streaming media according to an embodiment of the present application.

Step 200: Lock the broadcast television channel;

Step 201: Play a radio and television program.

Step 202: Periodically monitor the PMT.

Step 203: Determine whether the PMT has changed. If yes, go to step 204; otherwise, go to step 202;

Step 204: Parse the changed PMT;

Step 205: Determine whether there is a streaming media descriptor in the PMT, and if yes, go to step 206; otherwise, go to step 210;

Step 206: Obtain the playback time, playback duration, and playback address in the streaming media descriptor.

Step 207: Download the streaming media according to the playback address.

Step 208: When the playback time arrives, play the downloaded streaming media, and display and start the timer;

Step 209: The timer time is up, that is, the streaming media is over, and step 203 is performed.

Step 210: It is determined whether there are audio descriptors and video descriptors for broadcasting a television program in the PMT, and if yes, step 211 is performed; otherwise, the playback is ended;

Step 211: Acquire an audio descriptor and a video descriptor for broadcasting a television program in the PMT;

Step 211: Play a broadcast television program.

The specific embodiments will be described below.

Example 1

Streaming media advertisements are inserted during the broadcast of radio and television programs on ordinary smart televisions.

At the front end of the broadcast television, the advertisement content is stored on the streaming media server, and the information such as the play address, play time, and play time corresponding to the advertisement content is encoded into the PMT.

Operating procedures:

Step 1: encode the advertisement content and store it on the streaming server;

Step 2: Use existing mature streaming media protocols (HLS / MSS / DASH, etc.) to distribute advertisements and obtain corresponding playback addresses (this embodiment does not depend on a specific streaming media protocol);

Step 3: According to the needs of the radio and television signals, obtain the playing time and playing time of each advertising segment;

Step 4. Generate the PMT1 according to the definition of the PMT extended description of the advertisement's play address, play time, and play time;

Step 5. Start inserting PMT1 repeatedly at 100 millisecond intervals 2 seconds before the advertisement playback time;

Step 6. When the play time arrives, play the advertisement according to the play address;

Step 7. 2 seconds before the end of the advertisement playback, stop inserting PMT1, and start inserting PMT2 for broadcasting TV programs;

Step 8. When the playing duration ends, stop playing the advertisement and start playing the TV broadcast program.

Example 2

Streaming advertisements are inserted during the broadcast of TV programs on a smart TV with a CAM card inserted.

On a smart TV with a CAM (Conditional Access Module), the flow of the broadcast TV signal is: the signal cable carrying the TV signal → the cable TV interface → the TV ’s Tuner / Demod (demodulation) Device) → CAM card → TV's Demux (demultiplexer) → TV's Decoder (decoder) → display.

The application inside the CAM card can modify the PMT and TV signals flowing through the CAM card, so as to achieve the effect of playing streaming media under the broadcast television channel.

Operating procedures:

Step 1. Play a broadcast TV program on the smart TV with the CAM card inserted;

Step 2. The application in the CAM generates a streaming media advertisement to be played after learning that the smart TV is playing a broadcast television program;

Step 3. The application in the CAM generates a new PMT according to the PMT extension definition of the streaming media playback address, playback time, and playback duration, etc .;

Step 4. The application in the CAM removes the PMT of the TS stream flowing through the CAM card, and replaces all the PMT with the new PMT obtained in step 3.

Step 5. When the playback time arrives, play a streaming media advertisement corresponding to the playback address.

Based on the same inventive concept, an embodiment of the present application further provides a terminal for playing streaming media. The method corresponding to the terminal is a method for playing streaming media in the embodiment of the present application. The method is similar, so the implementation of the terminal may refer to the method implementation, and the duplicated details are not described again.

As shown in FIG. 3, a terminal for performing streaming media playback provided in an embodiment of the present application includes: at least one processing unit 300 and at least one storage unit 301, where the storage unit 301 stores program code, and When the program code is executed by the processing unit 300, the processing unit 300 is caused to perform the following processes:

After monitoring that the PMT corresponding to the broadcasting television channel being changed changes, it is determined whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time, playback duration, and playback address of the corresponding streaming media;

If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor arrives, when the playback time reaches the playback time corresponding to the streaming media descriptor, stream media.

Optionally, the processing unit 300 is specifically configured to:

Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or

Download the streaming media corresponding to the streaming media descriptor according to the playback address before the playback time arrives, and play when the playback time arrives.

Optionally, the processing unit 300 is further configured to:

When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started.

Optionally, the processing unit 300 is further configured to:

When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel.

Optionally, the processing unit 300 is further configured to:

If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT.

Based on the same inventive concept, another embodiment of a terminal for streaming media playback is provided in the embodiment of the present application, because the method corresponding to the terminal is a method for streaming media playback in the embodiment of the present application, and the principle of the terminal for solving the problem Similar to this method, the implementation of this terminal can refer to the implementation of the method, and the duplicated details will not be repeated here.

As shown in FIG. 4, an embodiment of the present application provides a terminal for streaming media playback, including a determination module 400 and a playback module 401:

Judging module 400: It is used to determine whether there is a streaming media descriptor in the PMT after monitoring that the PMT corresponding to the broadcasting television channel being played changes, and the streaming media descriptor includes the playback time and playback time of the corresponding streaming media. Duration and playback address;

A playback module 401: configured to play the same content as the broadcast TV channel if the broadcast media descriptor does not change before the playback time in the streaming media descriptor arrives; The streaming media corresponding to the streaming media descriptor.

Optionally, the playback module 401 is specifically configured to:

Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or

Downloading the streaming media corresponding to the streaming media descriptor according to the playback address in the streaming media descriptor before the playback time arrives, and playing when the playback time arrives.

Optionally, the playback module 401 is further configured to:

When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started.

Optionally, the playback module 401 is further configured to:

When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel.

Optionally, the playback module 401 is further configured to:

If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT.

An embodiment of the present application further provides a readable storage medium for streaming media playback, including program code. When the program code runs on a computing device, the program code is used to cause the computing device to perform streaming media playback. Method steps.

The above describes the present application with reference to block diagrams and / or flowcharts showing methods, devices (systems) and / or computer program products according to embodiments of the present application. It should be understood that one block of the block diagrams and / or flowchart illustrations, and a combination of blocks of the block diagrams and / or flowchart illustrations can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, a processor of a special purpose computer, and / or other programmable data processing device to produce a machine such that the instructions executed via the computer processor and / or other programmable data processing device create A method for implementing the functions / actions specified in the block diagrams and / or flowchart blocks.

Accordingly, the application can also be implemented in hardware and / or software (including firmware, resident software, microcode, etc.). Still further, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code implemented in the medium for use by an instruction execution system or Used in conjunction with the instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or transfer a program for use by or in connection with an instruction execution system, apparatus, or device, Device or equipment.

Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims (11)

A method for playing streaming media, the method includes: After monitoring that the program mapping table PMT corresponding to the broadcast television channel being broadcast changes, determining whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time of the corresponding streaming media; If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor arrives, when the playback time reaches the playback time corresponding to the streaming media descriptor, stream media. The method according to claim 1, wherein the streaming media descriptor further comprises a playback address, and playing the streaming media corresponding to the streaming media descriptor when the playback time arrives includes: Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or Download the streaming media corresponding to the streaming media descriptor according to the playback address before the playback time arrives, and play when the playback time arrives. The method according to claim 1, wherein the streaming media descriptor further comprises a playback duration, and playing the streaming media corresponding to the streaming media descriptor when the playback time reaches, further comprising: When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started. The method according to any one of claims 1-3, further comprising: When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel. The method according to any one of claims 1-3, after playing the streaming media corresponding to the streaming media descriptor, further comprising: If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT. A terminal for playing streaming media includes a processor and a memory, wherein the memory stores program code, and when the program code is executed by the processor, causes the terminal to perform the following processes: After monitoring that the PMT corresponding to the broadcasting television channel being changed changes, it is determined whether a streaming media descriptor exists in the PMT, and the streaming media descriptor includes the playback time, playback duration, and playback address of the corresponding streaming media; If the streaming media descriptor exists, and the broadcast and television channel does not change before the playback time in the streaming media descriptor arrives, when the playback time reaches the playback time corresponding to the streaming media descriptor, stream media. The terminal according to claim 6, wherein the processor is specifically configured to: Playing the streaming media corresponding to the streaming media descriptor according to the playback address when the playback time arrives; or Download the streaming media corresponding to the streaming media descriptor according to the playback address before the playback time arrives, and play when the playback time arrives. The terminal according to claim 6, the processor is further configured to: When the playback time arrives, a timer set according to the playback duration in the streaming media descriptor is displayed and started. The terminal according to any one of claims 6 to 8, the processor is further configured to: When the streaming media corresponding to the streaming media descriptor is played, if the broadcast television channel changes, the broadcast television program or streaming media is played according to the PMT corresponding to the changed broadcast television channel. The terminal according to any one of claims 6 to 8, the processor is further configured to: If a change is detected in the PMT corresponding to the broadcast TV channel being broadcast, and there is no streaming media descriptor in the changed PMT, and there are audio descriptors and / or video descriptors for broadcast TV program playback, After the media playback ends, a broadcast television program is played according to the audio descriptor and / or the video descriptor existing in the changed PMT. A computer-readable non-volatile storage medium having stored thereon a computer program which, when executed by a processor, implements the method according to any one of claims 1-5.

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