WO2017071428A1

WO2017071428A1 - Fast forward/rewind processing method and terminal

Info

Publication number: WO2017071428A1
Application number: PCT/CN2016/099377
Authority: WO
Inventors: 周茂林; 程子乾; 陈洲
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-10-26
Filing date: 2016-09-19
Publication date: 2017-05-04
Also published as: CN106612462A; CN106612462B

Abstract

Disclosed in the embodiment of the present invention is a fast forward/rewind processing method, comprising: when a fast forward/rewind request is received, the terminal obtains an I-frame sequence according to a current program playing time, the index information of each I-frame of the current program stored in advance and a speed contained in the fast forward/rewind request; and sends a data request message to the server for each first predetermined time interval, wherein one I-frame in the I-frame sequence is sequentially carried in the sent data request message; and the terminal will also receive, decode and output the data of the I-frame fed back by the server according to the index information of the received I-frame. Disclosed in the embodiment of the invention also includes a terminal. The advantage realized by the embodiment of the invention is that the requirement on bandwidth can be effectively reduced.

Description

Fast forward and rewind processing method and terminal

Technical field

The embodiments of the present invention relate to the field of streaming media communication technologies, and in particular, to a fast forward and fast rewind processing method and a terminal.

Background technique

At present, the OTT (Over The Top) service is the most common service in the Internet business, and the OTT mobile video service service based on the open Internet is suitable for many applications such as Live, On Demand, and Time Shift in the future. One of the best solutions for demand.

The playback control of the common OTT service adopts the code stream adaptive mode, and the commonly used protocols include: Http Live Streaming, MPEG DASH, Microsoft Smooth Streaming and the like. In general, the OTT service uses the low-level positioning method in fast forward and rewind. In this mode, the fast forward and rewind user experience of the current program is faster than that in the Internet Protocol Television (IPTV) service. The fast-rewinding user experience is poor, and the IPTV service adopts the I frame (I Frame) playback mode to achieve fast forward and rewind. The I frame is a full frame compression coded frame, which may also be referred to as an intraframe coded frame. The data volume of the I frame is generally large, and the I frame is generated without reference to other frames, and belongs to the reference frame, and is only used for decoding. An I town can reconstruct a complete image.

At present, the protocol used for OTT video playback is also considering the I frame play mode that supports fast forward and rewind, and based on the OTT video play service, the terminal generally downloads I frame data of all I frames of the currently playing program from the server. Down, after entering the fast forward and rewind state, the downloaded I frame data is sequentially output.

However, due to the large amount of data of the I frame, all I frames downloaded for the current program have higher bandwidth requirements.

The above content is only used to assist in understanding the technical solutions of the embodiments of the present invention, and does not mean that the above content is related art.

Summary of the invention

The main purpose of the embodiments of the present invention is to provide a fast forward and fast rewind processing method and a terminal, which are intended to solve the bandwidth of the I frame data that needs to be downloaded in a large number of I frames during fast forward and fast rewind in the related art. Asking too high a question.

To achieve the above object, an embodiment of the present invention provides a fast forward and fast rewind processing method, including:

When receiving the fast forward or fast reverse request, the I frame is obtained according to the current program play duration, the index information of each I frame of the current program saved in advance, and the multiple speed included in the fast forward or fast reverse request. I frame sequence;

Sending a data request message to the server, and the data request message carries the index information of the I frame in the I frame sequence in sequence;

Receiving and decoding the I frame data that the server feeds back according to the index information of the received I frame.

Optionally, when receiving the fast forward or fast reverse request, according to the current program play duration, the index information of each I frame of the current program saved in advance, and the content included in the fast forward or fast reverse request I frame is selected at double speed to obtain an I frame sequence, including:

When receiving the fast forward request or the fast reverse request, determining the second duration according to the double speed of the fast forward or fast reverse;

Determining, according to the duration of the current program, the second duration and the time point of each I frame of the current program, selecting an I frame, and obtaining the I frame sequence, where the time point of the I frame is included in the I frame In the index information.

Optionally, the I frame is selected according to the duration of the current program, the second duration, and the time point of each I frame of the current program, to obtain the I frame sequence, including:

If fast forward, the initial value of m is 0, perform the following steps:

Step 1: the sum of the second duration of the current program played duration plus m times is taken as an effective time point;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame later in the valid time point;

Step 3: If there is an I frame later in the valid time point, then select the time point and the The most recent I frame of the effective time point is used as the m+1th frame of the I frame sequence, so that m=m+1, returning to step 1;

Step 4: If there is no I frame after the valid time point, the selection of the I frame ends.

Optionally, the I frame is selected according to the duration of the current program, the second duration, and the time point of the I frame included in the index information of each I frame of the current program, to obtain the I frame sequence. ,include:

If it is fast rewind, the initial value of m is 0, perform the following steps:

Step 1: subtracting, as the effective time point, the difference of the second duration of the current program played duration by m times;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame in the effective time point;

Step 3: If there is an I frame in front of the valid time point, an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so that m= m+1, return to step 1;

Step 4: If there is no I frame in the effective time point, the selection of the I frame ends.

Optionally, the preset first duration is a preset time value less than or equal to 1 second, or a time value less than or equal to 1 second calculated based on the double speed.

In order to solve the above problem, the embodiment of the present invention further provides a terminal, including:

The selection module is configured to, according to the current program played duration, the pre-stored index information of each I frame of the current program, and the double speed included in the fast forward or rewind request, when the fast forward or fast reverse request is received Selecting an I frame to obtain an I frame sequence;

The sending module is configured to send a data request message to the server, and the data request message sequentially carries the I frame sequence in the sequence of the first time period that is preset before the selection module obtains the I frame sequence. Index information of the I frame;

The receiving output module is configured to receive and decode the I frame data that is fed back by the server according to the index information of the received I frame after the sending module sends the data request message.

Optionally, the selecting module includes:

a duration determining module, configured to receive a fast forward request or a fast reverse request, according to the fast The double speed of entering or rewinding determines the second time length;

a frame selection module, configured to: after the duration determining module determines the second duration, select an I frame according to the current duration of the current program, the second duration, and the time point of each I frame of the current program. Obtaining the I frame sequence, where the time point of the I frame is included in the index information of the I frame.

Optionally, the frame selection module is specifically configured to:

If fast forward, the initial value of m is 0, perform the following steps:

Step 3: If there is an I frame later in the valid time point, then an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so that m= m+1, return to step 1;

Optionally, the frame selection module is specifically configured to:

If it is fast rewind, the initial value of m is 0, perform the following steps:

In the embodiment of the present invention, a computer storage medium is also provided, and the computer storage medium is provided. The quality may store an execution instruction for executing the fast forward and rewind processing method in the above embodiment.

An embodiment of the method for fast forward and rewind provided by the embodiment of the present invention is: when receiving a fast forward or fast reverse request, the terminal according to the current program play duration, the index information of each I frame of the current program saved in advance, and the fast forward. The I frame is selected in the fast rewind request to obtain an I frame sequence, and a data request message is sent to the server for each first interval set in advance, and the transmitted data request message carries one of the I frame sequences in sequence. In the I frame, the terminal will also receive and decode the data of the I frame fed back by the output server according to the index information of the received I frame to implement fast forward and rewind. Since the selected I frame is a part of the I frame of the current program, when the fast forward and rewind are implemented, it is not necessary to download the I frame data of all the I frames of the current program, and the output effect of the fast forward and rewind can be realized. At the same time, the download amount of the I frame data is effectively reduced, and the reduction of the I frame data download amount can effectively reduce the requirement for the broadband.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a method for processing fast forward and rewind according to the present invention;

2 is a schematic flow chart of a second embodiment of a method for processing fast forward and rewind according to the present invention;

3 is a schematic diagram of functional modules of a first embodiment of a terminal according to the present invention;

4 is a schematic diagram of functional modules of a second embodiment of a terminal of the present invention.

The implementation, functional features and advantages of the embodiments of the present invention will be further described with reference to the accompanying drawings.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The main solution of the embodiment of the present invention is: when receiving the fast forward or fast reverse request, the terminal according to the current program play duration, the index information of each I frame of the current program saved in advance, and the fast forward and rewind request included in the request The I frame is selected at a double speed to obtain an I frame sequence, and the I frame sequence includes a partial I frame of the current program. After selecting the I frame sequence, the terminal sends a data request message to the server every time the interval is preset, and the data request message is sequentially carried in the sent data request message. An I frame of the I frame sequence is carried, and the terminal further receives and decodes data of the I frame fed back by the output server according to the received index information of the I frame to implement fast forward and rewind. Since the selected I frame is a part of the I frame of the current program, in the process of implementing fast forward and rewind, it is not necessary to download the I frame data of all the I frames of the current program, and the output can be fast forwarded and rewinded. The effect is effective at reducing the download amount of I frame data, and the reduction of the I frame data download amount can effectively reduce the requirement for broadband.

Specifically, please refer to FIG. 1 , which is a schematic diagram of a first embodiment of a fast forward and fast rewind processing method according to the present invention. The method includes:

Step 101: When receiving a fast forward or fast reverse request, according to the current program play duration, the index information of each I frame of the current program saved in advance, and the I frame included in the fast forward or fast reverse request, the I frame is obtained, and I is obtained. Frame sequence

In the embodiment of the present invention, when the terminal starts to play the program, the terminal sends an I frame index information request message to the server, and after receiving the I frame index information request message, the server parses the video source of the current program of the terminal, and obtains The index information of each I frame of the current program is fed back to the terminal by the obtained index information of each I frame.

After receiving the index information of each I frame of the current program, the terminal saves the index information of each I frame of the current program.

The index information of the I frame includes at least the time point of the I frame, and the time point of the I frame refers to the time point of the I frame in the current program.

In addition, the index information of the I frame may further include parameters such as the name of the fragment where the I frame is located, the offset position of the I frame in the fragment, and the size of the I frame.

In the embodiment of the present invention, the user may issue a fast forward or fast reverse request to the terminal by using a remote control or a touch screen touch, and the fast forward or fast reverse request includes a fast forward or fast reverse speed, wherein The double speed of entering or rewinding can be 2, 4, 8, 16 and so on.

After receiving the fast forward or fast reverse request, the terminal selects an I frame according to the current program play duration, the index information of each I frame of the current program saved in advance, and the double speed included in the fast forward or fast reverse request. Get the I frame sequence.

The terminal will stop broadcasting at the normal playback speed after receiving the fast forward or fast reverse request. Release mode, and the terminal will obtain the elapsed duration of the current program when receiving the fast forward or fast rewind request, for example, if the fast forward or rewind request is received when the current program is played for 10 minutes, the current program has been played. The duration is 10 minutes.

In the embodiment of the present invention, the terminal may be a television, a computer, a set top box, a PAD, a smart phone, or the like.

Step 102: Send a data request message to the server every time the interval is preset, and the data request message sequentially carries the index information of the I frame in the I frame sequence.

Step 103: Receive and decode data of an I frame fed back by the output server according to the received index information of the I frame.

In the embodiment of the present invention, after selecting an I frame and obtaining an I frame sequence, the terminal sends a data request message to the server for each first interval set in advance, and the data request message sequentially carries the I in the I frame sequence. The index information of the frame.

It should be noted that, in the embodiment of the present invention, the I frames in the I frame sequence are arranged in the order of time points. If the I frame sequence obtained in the fast forward case, the I frame in the I frame sequence It is arranged in order of increasing time points. If the I frame sequence is obtained in the case of fast rewind, the I frames in the I frame sequence are arranged in order of decreasing time points.

Each time the terminal sends a data request message, the data request message includes the index information of the I frame in the I frame sequence, and the terminal is sequentially carried in the data request message according to the order of the I frames in the I frame sequence. .

For example, if the I frame sequence is [I0, I1, I2, I3, ..., I10], the terminal sequentially transmits the data carrying the index information of I0 for each first interval set in advance after the I frame sequence is obtained. The request message, the data request message carrying the index information of I1, the data request message carrying the index information of I2, the data request message carrying the index information of I3, ..., the data request message carrying the index information of I10.

When the terminal sends a data request message to the server, the index information of the I frame carried by the terminal includes the time point of the I frame, the fragment name of the I frame, the offset position of the I frame in the fragment, and the I frame size.

After receiving the data request message, the server will use the index information of the I frame carried by the server. The time point of the I frame in the I frame determines the position of the I frame on the total duration of the current program, and uses the slice name in which the I frame is located to determine the slice in which the I frame is located, and after determining the slice, the I frame is used in the segment. The offset position and the I frame size in the slice extract I frame data, and the extracted I frame data is fed back to the terminal.

After receiving the data request message, the server determines the corresponding I frame data based on the index information of the I frame in the above manner, and feeds the obtained I frame data to the terminal. And each time the terminal receives the I frame data, the terminal will decode and output the received I frame data, so that the fast forward or fast reverse output effect can be displayed on the display interface of the terminal.

In the embodiment of the present invention, when the terminal receives the fast forward or fast reverse request, the I frame is selected according to the current program play duration, the index information of each I frame of the current program, and the double speed of fast forward or fast reverse, to obtain an I frame. a sequence, and sending a data request message to the server every predetermined first time period, and the data request message sequentially carries the index information of the I frame in the I frame sequence, and receives the index of the received I frame according to the received frame. After the I frame data of the information feedback, the terminal will decode and output the I frame data. In the above manner, the I-frame of the selected part can be downloaded from the server to realize the fast-forward and fast-return output effect, without downloading all the I-frames of the current program, thereby effectively reducing the download amount of the I-frame data, and Can effectively reduce the requirements for broadband.

For a better understanding of the technical solution in the embodiment of the present invention, please refer to FIG. 2 , which is a schematic diagram of a second embodiment of a fast forward and fast rewind processing method provided by the present invention.

Steps

201 and 202 in the method are correct. The refinement of step 101 in the first embodiment, specifically, the method includes:

Step 201: When receiving a fast forward request or a fast reverse request, determining a second duration according to a double speed of fast forward or fast reverse;

In the embodiment of the present invention, when receiving a fast forward or fast reverse request, the terminal determines a second duration according to a fast forward or fast reverse speed, wherein the second duration is used to select an I frame.

Among them, the double speed of fast forward or fast reverse is carried in the fast forward or fast reverse request, and the user who uses the terminal can determine the double speed of fast forward or fast reverse by selecting.

Further, determining the second duration according to the double speed of fast forward or rewind may be: if the double speed of fast forward or fast reverse is N, determining that the second duration is N seconds, or determining that the second duration is N double speed.

Further, the second duration may be related to the first duration, where the first duration is a preset time interval for sending a data request message to the server. Specifically, the second duration is equal to the double speed of the fast forward or fast reverse and the first duration. The product, that is, if the first time is 1 second and the double speed is N, it is determined that the second time is N seconds, and if the first time is 1/3 second, the second time length is determined to be N/3 seconds.

Step 202: Select an I frame according to the current program duration, the second duration, and the time point of the I frame included in the index information of each I frame of the current program, to obtain an I frame sequence.

In the embodiment of the present invention, the terminal further selects an I frame according to the current program duration, the second duration, and the time point of each I frame of the current program, to obtain an I frame sequence, where the index information of the I frame includes the I frame. In addition, the index information of the I frame may further include a time point of the I frame, a name of the fragment where the I frame is located, an offset position of the I frame in the fragment, and an I frame size.

The following describes the process of selecting an I frame by the terminal based on the different conditions of fast forward and fast reverse:

If fast forward, the initial value of m is 0, and the terminal performs the following steps:

Step 1: The sum of the second duration of the current program played time plus m times is taken as the effective time point;

Step 2: judging whether there is an I frame later according to the time point of each I frame of the current program;

Step 3: If there is an I frame later in the valid time point, then an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so m=m+1, return to execution. step 1;

or;

If it is fast rewind, the initial value of m is 0, and the terminal performs the following steps:

Step 1: subtract the difference of the second duration of the current program playback duration by m times as the effective time point;

Step 2: According to the time point of each I frame of the current program, determine whether there is an I frame in the effective time point;

Step 3: If there is an I frame in front of the effective time point, then an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so m=m+1, and return to execution. Step 1;

It should be noted that, according to the I frame sequence obtained in the foregoing manner, the I frames in the I frame sequence are arranged in the order of time points, so that when the data request message is sent to the server, the I frame time can be followed. The sequence information of the I frame is sequentially carried in the data request message, and the I frame data received by the terminal is also arranged in order of time, so that the terminal can sequentially decode and output the I frame data according to the sequence of time points. It has a better fast-forward and fast-return output effect to avoid turbulence in the output.

It should be noted that, in the embodiment of the present invention, after going to the destination, it is described based on the playing time of the current program. If the fast forward is in the direction of the time when the current program is not playing, if it is rewinding, it is The direction in which the current program has played time.

Step 203: Send a data request message to the server every time the interval is preset, and the data request message carries the index information of the I frame in the I frame sequence in sequence;

In the embodiment of the present invention, the terminal sends a data request message to the server at a preset first time interval, and the data request message sequentially carries the index information of the I frame in the I frame sequence.

Specifically, at time sT, the terminal sends a data request message to the server, where the data request message carries the s+1th I frame in the I frame sequence, where the value of s is [0, 1, 2, ..., S ], T is the first duration, and the I frame sequence contains S+1 I frames. Wherein, when s is 0, it means that the terminal immediately starts to send a data request message carrying the first I frame in the I frame sequence to the server after obtaining the I frame sequence.

In the embodiment of the present invention, the preset first duration may be a preset time value less than or equal to 1 second, or a time value less than or equal to 1 second calculated based on the double speed.

For example, if the first duration is 1 second, the terminal will send a data request message every 1 second, and by sending the data request message once every second, the speed can be realized by using the first duration as the step size to express different fast forwards. Or the difference between the speeds of rewinding, the user experience is good.

Further, the terminal may further calculate the first duration based on the double speed of the fast forward or fast reverse. When the double speed is N, the first duration is 1/logsN, where s is greater than 1, for example: if the speed is fast forward or rewind If 8, the terminal sends a data request message to the server every 1/3 second.

It should be noted that, in the embodiment of the present invention, the data request message is a Hyper Text Transfer Protocol (http) request.

Step 204: Receive and decode the I frame data that the output server feeds back according to the received index information of the I frame.

In the embodiment of the present invention, after receiving the data request message sent by the terminal, the server parses the data request message, obtains the index information of the I frame included in the data request message, and obtains corresponding information according to the index information of the I frame. I frame data, and the obtained I frame data is fed back to the terminal.

After receiving the I frame data fed back by the server according to the received index information of the I frame, the terminal decodes and outputs the I frame data, and the terminal sends the data request message to the server every time the first interval is separated, the terminal also The I frame data fed back by the server is received every interval of time, so that the effective output of the fast forward and rewind can be realized on the display interface of the terminal.

After decoding the I frame data, the terminal may output the decoded I frame data according to the normal play mode, or output the decoded I frame data according to the play mode of the I frame, and the actual application may be performed according to specific needs. Settings, not limited here.

It should be noted that, in the embodiment of the present invention, the terminal performs the

steps

203 and 204 in a loop, that is, after the terminal sends a data request message, the terminal receives the I frame according to the data request message. Indexing the I frame data fed back by the information and decoding the output, and transmitting the data request message once, and receiving the I frame data fed back by the server, and decoding the output, and then analogizing to I, in the case of the first time interval from the last transmission interval. Each I frame in the sequence of frames transmits a data request message and receives the feedback I frame data. And during the execution of step 203 and step 204, the output interface of the terminal will form an output effect of fast forward and rewind.

In the embodiment of the present invention, when the fast forward or fast reverse request is received, the second duration is determined according to the double speed of fast forward or fast reverse, and according to the current play duration, the second duration, and each I frame of the current program. The I frame time included in the index information is selected as an I frame to obtain an I frame sequence, and after the I frame sequence is obtained, the terminal sends a number to the server for the first time interval preset for each interval. According to the request message, and the data request message sequentially carries the index information of the I frame in the I frame sequence; and the terminal further receives and decodes the I frame data fed back by the output server according to the index information of the I frame in the received data request message. . In the above manner, it is only necessary to download the I frame in the selected I frame sequence from the server, without downloading all the I frames in the current program, which can effectively reduce the download amount of the I frame and reduce the requirement for the broadband.

For a better understanding of the technical solutions in the embodiments of the present invention, a specific application scenario is described in detail below, including:

1) The terminal receives the fast forward request, extracts the fast forward multiplication speed N included in the fast forward request, and determines the current program played time length T1;

2) The terminal determines that the time interval for sending the data request message to the server is 1/logsN, and the second duration for selecting the I frame is N/logsN;

3) The terminal determines the I frame sequence by using the second duration N/logsN, the current program playback duration T1, and the time point of each I frame of the current program saved by the terminal, and the I frame sequence is [I0, I1, I2, I3, ..., I10];

4) The terminal sends a data request message to the server, requesting I frame data of I0 in the I frame sequence;

5) The terminal receives the I frame data of the I0 fed back by the server, and decodes the output;

6) The terminal sends a data request message to the server, requesting I frame data of I1 in the I frame sequence;

7) The terminal receives the I frame data of the I1 fed back by the server, and decodes the output;

......

8) The terminal sends a data request message to the server, requesting I frame data of I10 in the I frame sequence;

9) The terminal receives the I frame data of the I10 fed back by the server, and decodes the output.

In the embodiment of the present invention, when N-speed fast forwards or rewinds, the program time step per second is N, but it is not required to acquire all I frames in N seconds per second, but 1/T0 I frames, the T0. It refers to the first duration, which can greatly reduce the number of I frames that need to be downloaded, and reduce the bandwidth requirement. At the same time, the larger the multiple, the more I frames are acquired, and the output fast forwards and rewinds. Screen cut Better results can also enhance the user experience.

In the embodiment of the present invention, by selecting each I frame of the current program, it is only necessary to download the I frame data of the partial I frame without downloading the I frame data of all the I frames of the current program, which can effectively reduce I. The amount of frame data downloaded, while reducing the requirements for broadband.

Referring to FIG. 3, it is an embodiment of a structure of a terminal according to an embodiment of the present invention, including:

The selecting module 301 is configured to: when receiving the fast forward or fast reverse request, select the I frame according to the current program play duration, the index information of each I frame of the current program saved in advance, and the double speed included in the fast forward or fast reverse request. , get the I frame sequence;

The sending module 302 is configured to send a data request message to the server after the I-frame sequence is obtained by the selecting module 301, and the data request message sequentially carries the index information of the I frame in the I frame sequence. ;

The receiving output module 303 is configured to receive and decode the I frame data fed back by the output server according to the received I frame index information after the sending module 302 sends the data request message.

After receiving the fast forward or fast reverse request, the terminal will according to the current program play duration, the index information of each I frame of the current program saved in advance, and the content included in the fast forward or rewind request. I frame is selected at double speed to obtain an I frame sequence.

After receiving the data request message, the server determines the position of the I frame on the total duration of the current program by using the time point of the I frame in the index information of the I frame carried by the server, and determines the I by using the slice name of the I frame. After the fragment is determined, and after determining the fragment, the I frame data is extracted by using the offset position of the I frame in the fragment and the I frame size, and the extracted I frame data is fed back to the terminal.

In the embodiment of the present invention, when receiving the fast forward or fast reverse request, the selecting module 301 is configured according to the current program play duration, the index information of each I frame of the current program saved in advance, and the fast forward or fast reverse request. The I frame is selected at a multiple speed to obtain an I frame sequence. Then, the sending module 302 sends a data request message to the server every interval of the first time interval, and the data request message carries the index information of the I frame in the I frame sequence. And receiving, by the receiving output module 303, and decoding the I frame data fed back by the output server according to the index information of the received I frame.

In the embodiment of the present invention, when the terminal receives the fast forward or fast reverse request, the I frame is selected according to the current program play duration, the index information of each I frame of the current program, and the double speed of fast forward or fast reverse, to obtain an I frame. a sequence, and sending a data request message to the server every predetermined first time period, and the data request message sequentially carries index information of the I frame in the I frame sequence, and the received server receives the request message according to the received data request message. After the I frame data fed back by the I frame index information, the terminal will decode and output the I frame data. In the above manner, the I-frame of the selected part can be downloaded from the server to realize the fast-forward and fast-return output effect, without downloading all the I-frames of the current program, thereby effectively reducing the download amount of the I-frame data, and Effectively reduce the requirements for broadband.

For a better understanding of the terminal in the embodiment of the present invention, refer to FIG. 4, which is an embodiment of the structure of the terminal in the embodiment of the present invention, including the selection module 301 described in the embodiment shown in FIG. The sending module 302 receives the output module 303 and is similar to the content described in the embodiment shown in FIG. 3, and details are not described herein again.

In the embodiment of the present invention, the selecting module 301 includes:

The duration determining module 401 is configured to determine the second duration according to the fast forward or fast reverse multiple speed when receiving the fast forward request or the fast reverse request;

The frame selection module 402 is configured to: after the duration determining module 401 determines the second duration, select an I frame according to the current duration of the program, the second duration, and the time point of each I frame of the current program, to obtain an I frame sequence, and an I frame. The time point is included in the index information of the I frame.

The frame selection module 402 is specifically configured to:

If fast forward, the initial value of m is 0, perform the following steps:

Alternatively, the frame selection module 402 is specifically configured to:

If it is fast rewind, the initial value of m is 0, perform the following steps:

In the embodiment of the present invention, the preset first duration is a preset time value less than or equal to 1 second, or a time value less than or equal to 1 second calculated based on the double speed.

In the embodiment of the present invention, when receiving the fast forward or fast reverse request, the selecting module 301 is configured according to the current program play duration, the index information of each I frame of the current program saved in advance, and the fast forward or fast reverse request. The I frame is selected at a multiple speed to obtain an I frame sequence. Specifically, the duration determining module 401 in the selecting module 301 determines the second duration according to the double speed of the fast forward or fast reverse, and is determined by the frame selection module 402 according to the duration of the current program. The duration and the time point of each I frame of the current program select an I frame to obtain an I frame sequence, and the index information includes the time point of the I frame.

Then, the sending module 302 sends a data request message to the server every time the interval is preset, and the data request message sequentially carries the index information of the I frame in the I frame sequence; and the receiving output module 303 receives and decodes the output. The server feeds back I frame data according to the index information of the received I frame.

In the embodiment of the present invention, when the fast forward or fast reverse request is received, the second duration is determined according to the double speed of fast forward or fast reverse, and according to the current play duration, the second duration, and each I frame of the current program. The I frame time included in the index information is selected as an I frame, and an I frame sequence is obtained. After the I frame sequence is obtained, the terminal sends a data request message to the server for each first interval set in advance, and the data request message is sequentially Carrying index information of the I frame in the I frame sequence; and the terminal will also receive and decode the I frame data fed back by the output server according to the received index information of the I frame. In the above manner, it is only necessary to download the I frame in the selected I frame sequence from the server, without downloading all the I frames in the current program, which can effectively reduce the download amount of the I frame and reduce the requirement for the broadband.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, when receiving the fast forward or fast reverse request, selecting an I frame according to the current program play duration, the index information of each I frame of the current program saved in advance, and the double speed included in the fast forward or fast reverse request, to obtain an I frame. sequence;

S2, sending a data request message to the server every interval of the preset first time duration, And the data request message carries the index information of the I frame in the I frame sequence in sequence;

S3. Receive and decode the I frame data fed back by the output server according to the received index information of the I frame.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

S1, when receiving the fast forward request or the fast reverse request, determining the second duration according to the double speed of fast forward or fast reverse;

S2: Select an I frame according to the current duration of the program, the second duration, and the time point of each I frame of the current program, to obtain an I frame sequence, where the time point of the I frame is included in the index information of the I frame.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention in essence or the contribution to the related art can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods of various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Industrial applicability

In the embodiment of the present invention, when receiving the fast forward or fast reverse request, the terminal selects I according to the current program play duration, the index information of each I frame of the current program saved in advance, and the double speed included in the fast forward rewind request. The frame obtains an I frame sequence, and sends a data request message to the server every time the interval is preset, and the data request message carries one I frame in the I frame sequence, and the terminal also receives and decodes. The output server feeds back the data of the I frame according to the index information of the received I frame to implement fast forward and rewind. Since the selected I frame is a part of the I frame of the current program, when the fast forward and rewind are implemented, it is not necessary to download the I frame data of all the I frames of the current program, and the output effect of the fast forward and rewind can be realized. At the same time, the download amount of the I frame data is effectively reduced, and the reduction of the I frame data download amount can effectively reduce the requirement for the broadband.

Claims

A fast forward and rewind processing method, including:

When receiving the fast forward or fast reverse request, the I frame is obtained according to the current program play duration, the index information of each I frame of the current program saved in advance, and the multiple speed included in the fast forward or fast reverse request. I frame sequence;

Sending a data request message to the server, and the data request message carries the index information of the I frame in the I frame sequence in sequence;

Receiving and decoding output I frame data fed back by the server according to the received index information of the I frame.
The processing method according to claim 1, wherein when the fast forward or fast reverse request is received, the index information of each I frame of the current program saved in advance according to the current program play duration and the fast The I frame is selected at the double speed included in the incoming or rewind request to obtain an I frame sequence, including:

When receiving the fast forward request or the fast reverse request, determining the second duration according to the double speed of the fast forward or fast reverse;

Determining, according to the duration of the current program, the second duration and the time point of each I frame of the current program, selecting an I frame, and obtaining the I frame sequence, where the time point of the I frame is included in the I frame In the index information.
The processing method according to claim 2, wherein the I frame is selected according to the current program played duration, the second duration, and the time points of each I frame of the current program, to obtain the I frame sequence. ,include:

If fast forward, the initial value of m is 0, perform the following steps:

Step 1: the sum of the second duration of the current program played duration plus m times is taken as an effective time point;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame later in the valid time point;

Step 3: If there is an I frame later in the valid time point, then select the time point and the The most recent I frame of the effective time point is used as the m+1th frame of the I frame sequence, so that m=m+1, returning to step 1;

Step 4: If there is no I frame after the valid time point, the selection of the I frame ends.
The processing method according to claim 2, wherein the time point of the I frame included in the index information of each I frame of the current program is selected according to the duration of the current program, the second duration, and the I frame included in the index information of each I frame of the current program. Frame, obtaining the sequence of I frames, including:

If it is fast rewind, the initial value of m is 0, perform the following steps:

Step 1: subtracting, as the effective time point, the difference of the second duration of the current program played duration by m times;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame in the effective time point;

Step 3: If there is an I frame in front of the valid time point, an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so that m= m+1, return to step 1;

Step 4: If there is no I frame in the effective time point, the selection of the I frame ends.
The processing method according to claim 1, wherein the preset first duration is a preset time value less than or equal to 1 second, or a time value less than or equal to 1 second calculated based on the double speed .
A terminal comprising:

The selection module is configured to, according to the current program played duration, the pre-stored index information of each I frame of the current program, and the double speed included in the fast forward or rewind request, when the fast forward or fast reverse request is received Selecting an I frame to obtain an I frame sequence;

The sending module is configured to send a data request message to the server, and the data request message sequentially carries the I frame sequence in the sequence of the first time period that is preset before the selection module obtains the I frame sequence. Index information of the I frame;

The receiving output module is configured to receive and decode the I frame data that the server feeds back according to the received index information of the I frame after the sending module sends the data request message.
The terminal of claim 6, wherein the selection module comprises:

a duration determining module, configured to determine a second duration according to the fast forward or fast reverse multiple speed when receiving the fast forward request or the fast reverse request;

a frame selection module, configured to: after the duration determining module determines the second duration, select an I frame according to the current duration of the current program, the second duration, and the time point of each I frame of the current program. Obtaining the I frame sequence, where the time point of the I frame is included in the index information of the I frame.
The terminal according to claim 7, wherein the frame selection module is specifically configured to:

If fast forward, the initial value of m is 0, perform the following steps:

Step 1: the sum of the second duration of the current program played duration plus m times is taken as an effective time point;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame later in the valid time point;

Step 3: If there is an I frame later in the valid time point, then an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so that m= m+1, return to step 1;

Step 4: If there is no I frame after the valid time point, the selection of the I frame ends.
The terminal according to claim 7, wherein the frame selection module is specifically configured to:

If it is fast rewind, the initial value of m is 0, perform the following steps:

Step 1: subtracting, as the effective time point, the difference of the second duration of the current program played duration by m times;

Step 2: determining, according to the time point of each I frame of the current program, whether there is an I frame in the effective time point;

Step 3: If there is an I frame in front of the valid time point, an I frame closest to the effective time point is selected as the m+1th frame of the I frame sequence, so that m= m+1, return to step 1;

Step 4: If there is no I frame in the effective time point, the selection of the I frame ends.
The terminal according to claim 6, wherein the preset first duration is a preset time value less than or equal to 1 second, or a time value less than or equal to 1 second calculated based on the double speed.