WO2012079492A1

WO2012079492A1 - Method and device for decoding video call data

Info

Publication number: WO2012079492A1
Application number: PCT/CN2011/083816
Authority: WO
Inventors: 王彦亭; 曹明明; 吴建新
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-15
Filing date: 2011-12-12
Publication date: 2012-06-21
Also published as: CN102572364A

Abstract

Disclosed in the present invention are the method and device for decoding video call data. The method comprises the following steps: extracting the multiplex table used for decoding the video from 3G video call data to be played; in case of extract failure, using the local multiplex table to decode the 3G video call data. The invention can solve the problem of decoding failure when negotiation information is not included in the 3G video call data; thereby improving the system flexibility and compatibility.

Description

The present invention relates to the field of communications, and in particular, to a method and an apparatus for decoding video call data. BACKGROUND With the application of the third generation mobile communication (3G) wireless network, the proportion of video calls in daily communication is gradually increasing, and various applications have put forward requirements for 3G video decoding and playback. Currently, the video decoding software method can decode 3G mobile phone video data. In the related art, before the video call between the mobile terminals starts, the capability set and the multiplexing information negotiation are performed, and after the negotiation is completed, the call is performed. The function of the negotiation is to obtain the coding parameters of the peer end, and is used to decode the data sent by the peer end. In this way, the 3G video data including the negotiation information can be used to decode the multiplex table through the protocol for decoding the video call content. However, with the advancement of technology, in order to improve the speed of the call connection establishment, the chip manufacturer sets a default multiplexing table, so that video calls between mobile terminal terminals applying the same manufacturer chip can not perform capability set and multiplexing information negotiation. However, such 3G video data does not contain negotiation information, and thus the video data cannot be decoded during playback. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a decoding scheme for video call data to at least solve the problem in the related art that cannot be decoded when playing 3G video data that does not contain negotiation information. In order to achieve the above object, according to an aspect of the present invention, a decoding method of video call data is provided. The method for decoding video call data according to the present invention includes the following steps: obtaining a multiplexing table required for decoding from 3G video call data to be played; and using a locally saved multiplexing table for 3G video in case of failure to acquire The call data is decoded. Preferably, before obtaining the multiplexing table required for decoding from the 3G video call data to be played, the method further includes: playing a 3G video call between the mobile terminals based on different manufacturer chips, obtaining and saving corresponding to the 3G video call Multiplex table. Preferably, before the 3G video call data is decoded by using the locally saved multiplex table, the method further includes: obtaining the identification information of the current mobile terminal from the 3G video call data, where the identification information includes at least one of the following: , the product number, the product version number; according to the identification information, select a multiplex table that best matches the model of the current mobile terminal from the locally saved multiplex table. Preferably, decoding the 3G video call data by using the locally saved multiplexing table includes: selecting a preset multiplexing table or a multiplexing table that best matches the model of the current mobile terminal as the current decoding multiplexing table, and according to the current decoding The multiplexing table sets the decoding parameters to decode the 3G video call data; and the decoded audio and video data are respectively sent to the corresponding decoder for decoding and playing. Preferably, after obtaining the multiplex table required for decoding from the 3G video call data to be played, the method further includes: if the obtained multiplex table required for decoding is not locally saved, if the acquisition is successful, The multimedia playback system then saves the multiplex table required for decoding. Preferably, the 3G video call data is decoded by the H.324 protocol using a locally stored multiplexing table. In order to achieve the above object, according to another aspect of the present invention, a decoding apparatus for video call data is also provided. The decoding device for video call data according to the present invention includes: an obtaining module configured to acquire a multiplexing table required for decoding from 3G video call data to be played; and a decoding module configured to use a local in case of acquisition failure The saved multiplex table decodes the 3G video call data. Preferably, the device further includes: a playing module, configured to play a 3G video call between mobile terminals based on different manufacturer chips; and a saving module configured to obtain and save a complex corresponding to the 3G video call according to the playing result of the playing module Use the table. Preferably, the device further includes: a selection module, configured to obtain identification information of the current mobile terminal from the 3G video call data, where the identification information includes at least one of the following: a vendor name, a product number, a product version number; The information selects a multiplex table that best matches the model of the current mobile terminal from the locally saved multiplex table. Preferably, the device is a multimedia playback system. According to the present invention, in the case that the multiplex table for playing the 3G video data fails, the 3G video call data is decoded by using the locally saved multiplex table, and the related art does not include the negotiation information during playback. The problem of not being able to decode 3G video data improves the flexibility and compatibility of the system. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a method of decoding video call data according to an embodiment of the present invention; FIG. 2 is a block diagram showing a structure of a decoding apparatus for video call data according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a multimedia playback system according to Embodiment 1 of the present invention; and FIG. 5 is a workflow diagram of video playback in a multimedia playback system according to Embodiment 1 of the present invention; Figure. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. According to an embodiment of the present invention, a decoding method of video call data is provided. 1 is a flowchart of a method for decoding video call data according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102: Acquire multiplexing required for decoding from 3G video call data that needs to be played. Step S104: In the case that the acquisition fails, the 3G video call data is decoded using the locally saved multiplexing table. Through the above steps, in the case that the multiplex table for playing the 3G video data fails, the method for decoding the 3G video call data is decoded by using the locally saved multiplex table, and the related art does not include the negotiation information during playback. The problem of not being able to decode 3G video data improves the flexibility and compatibility of the system. Preferably, before step S102, a 3G video call between mobile terminals based on different vendor chips can be played, and a multiplexing table corresponding to the 3G video call is obtained and saved. The method can locally save multiple types of multiplex tables in advance for playing 3G video calls in the future, and increase the resource library of the local multiplex table, thereby improving the processing capability of the system. Preferably, before the step S104, the identifier information of the current mobile terminal may be obtained from the 3G video call data, where the identifier information includes at least one of the following: a vendor name, a product number, a product version number; In the saved multiplex table, select the multiplex table that best matches the model of the current mobile terminal. This method can improve the effectiveness and accuracy of the system. Preferably, in step S104, decoding the 3G video call data by using the locally saved multiplexing table includes: selecting a preset multiplexing table or a multiplexing table that most closely matches the model of the current mobile terminal as the current decoding multiplexing table. And setting decoding parameters according to the current decoding multiplexing table to decode the 3G video call data; and transmitting the solved audio and video data to the corresponding decoder for decoding and playing. This method can increase the flexibility and processing efficiency of the system. Preferably, after the step S102, if the acquisition is successful, if the acquired multiplexing table required for decoding is not saved locally, the multimedia playing system saves the multiplexing table required for decoding. The method can increase the resource library of the local storage multiplex table, prepare for future playback processing, and improve the utilization of system resources. Preferably, the 3G video call data is decoded by the H.324 protocol using a locally stored multiplexing table. The method is simple and practical, and has high operability. Corresponding to the foregoing method, an embodiment of the present invention further provides a decoding apparatus for video call data. 2 is a structural block diagram of a decoding apparatus for video call data according to an embodiment of the present invention. As shown in FIG. 2, the apparatus 20 includes: an obtaining module 22 configured to acquire decoding required from 3G video call data to be played. The multiplexing module 24 is coupled to the obtaining module 22 and configured to decode the 3G video call data using the locally saved multiplexing table in case of failure to acquire. Through the foregoing device 20, in a case where the acquisition module 22 acquires the multiplex table for playing the 3G video data, the decoding module 24 decodes the 3G video call data by using the locally saved multiplexing table, and solves the related technology. In the case of playing 3G video data that does not contain negotiation information, it cannot be decoded, which improves the flexibility and compatibility of the system. 3 is a structural block diagram of a decoding apparatus for video call data according to a preferred embodiment of the present invention. As shown in FIG. 3, the apparatus 20 further includes: a playing module 32 configured to play 3G video between mobile terminals based on different manufacturers chips. The call module is coupled to the play module 32 and the decoding module 24, and is configured to obtain and save a multiplexing table corresponding to the 3G video call according to the result played by the play module 32. Preferably, the apparatus 20 further includes: a selection module 36, coupled to the saving module 34 and the obtaining module 22, configured to acquire identification information of the current mobile terminal from the 3G video call data, where the identification information includes at least One of the following: the manufacturer name, the product number, the product version number; and the multiplex table matching the model of the current mobile terminal from the locally saved multiplex table according to the identification information. Preferably, the device 20 can be a multimedia playback system. The implementation process of the above embodiment will be described in detail below in conjunction with the preferred embodiments and the accompanying drawings. Preferred Embodiment 1 The video decoding method in this embodiment can be applied to a multimedia playback system for decoding 3G mobile phone video data by using the H.324 protocol. 4 is a schematic structural diagram of a multimedia playing system according to Embodiment 1 of the present invention. As shown in FIG. 4, H.324 is a protocol set, which supports real-time video, audio, data, and any combination thereof, and the implementer can select according to requirements. Sub-protocol. For example, the multimedia playback system may use the H.245 protocol and the H.223 protocol as sub-protocols of the H.324 protocol, where the H.245 protocol is a control signaling protocol in the multimedia communication system, and is used to acquire a capability set in the video data. The H.223 protocol is a multimedia multiplexing protocol used to obtain channel information corresponding to video, audio, and data. In the implementation process, a certain number of multiplexing tables may be pre-stored in the multimedia playing system. When the 3G mobile phone video is played, if the multiplexing table can be solved, the decoded multiplexing table is directly used for decoding; Without the multiplex table, the preset multiplex table or the multiplex table with the highest matching degree with the current mobile phone model is used for decoding. FIG. 5 is a flowchart of a video playback operation in a multimedia playback system according to the first embodiment of the present invention. As shown in FIG. 5, the method for decoding a video playback of a 3G mobile phone may include the following steps: Step S502: When performing video playback of a 3G mobile phone, If the multiplex table can be solved from the video data, step S504 is performed, otherwise step S508 is performed. It should be noted that, before step S502, the data of the video call between the mobile terminals of different manufacturers' chips may be acquired in advance, and played in the multimedia playing system, and the reuse table solved during the playing process is saved in the database. In step S504, the multiplex table solved in step S502 is compared with the saved multiplex table one by one. If it is a new multiplex table, the process proceeds to step S506. Otherwise, the process is not saved, and then step S512 is performed. Step S506, the multiplexing table is saved. Step S508, determining whether the multiplexing table is preset. If so, it is taken as the current multiplexing table, and step S512 is performed. Otherwise, step S510 is performed. In step S510, the mobile phone manufacturer, the product number, and the product version number solved from the 3G mobile phone video data are matched with the corresponding information in the saved multiplexing table, and the multiplexing table with the highest matching degree is selected as the current multiplexing table. Step S512, setting the decoding parameters according to the current multiplexing table, and proceeding to step S514. Step S514, decoding the 3G mobile phone video data, and proceeding to step S516. Step S516, the solved audio and video data are respectively sent to the corresponding decoder for decoding and playing. It can be seen that, in this embodiment, when the video data of the mobile phone does not include the multiplex table information (that is, H.324 cannot decode the video by using the normal process), the existing decoding process is improved, so that the decoding can be performed normally. Improve system scalability and compatibility. Preferred Embodiment 2 This embodiment describes an operation process of video playback in a multimedia playback system by using an example. Specifically, the operation process may include the following steps: Step 1: You can play 3G video between mobile phone terminals of different manufacturer chips in advance. Call, save a certain number of multiplex tables. Step 2. Select a 3G mobile phone video file to play. Step 3. The multiplex table decoding, matching, and the like are automatically completed in the program. If the video call content can be played, the operation step ends here. Otherwise, proceed to step 4. Step 4: Select the multiplex table setting option in the media player window, and select the multiplex table in the pop-up dialog box, according to the manufacturer, product number, and product version number information. Step 5, select the video file just now and play it again. Step 6. If the player can play and is satisfied with the playing effect, the step ends here. Otherwise, steps 4 and 5 are repeated until the player can play and the effect is satisfactory. Follow the steps above to play the 3G mobile phone video data. It can be seen that, in the embodiment, the 3G mobile phone video call does not include parameter information and multiplexing information, and the monitoring process of the existing video monitoring system is improved, so that the system can use the H.324 protocol to communicate with the mobile phone in the 3G network. The video data is decoded to improve the processing power of the system. In summary, the video decoding processing method in the embodiment of the present invention can be applied to a multimedia playback system, in which a video call data between the same chip mobile phone uses a H.324 protocol for decoding, SP, and acquires a 3G video. When the multiplex table of the data fails, the method for decoding the 3G video call data is decoded by using the locally saved multiplex table, and the related art cannot decode the 3G video data that does not include the negotiation information when playing the related art. The problem has increased the flexibility and compatibility of the system. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for decoding video call data, comprising the following steps:

The multiplex table required for decoding is obtained from the 3rd generation mobile communication 3G video call data to be played; and if the acquisition fails, the 3G video call data is decoded using the locally saved multiplex table.

2. The method according to claim 1, wherein before obtaining the multiplexing table required for decoding from the 3G video call data that needs to be played, the method further includes:

Play 3G video calls between mobile terminals based on different manufacturer chips, and obtain and save a multiplexing table corresponding to the 3G video call.

The method according to claim 1, wherein before the decoding of the 3G video call data by using a locally saved multiplexing table, the method further includes:

Obtaining the identifier information of the current mobile terminal from the 3G video call data, where the identifier information includes at least one of the following: a vendor name, a product number, and a product version number;

And selecting, according to the identification information, a multiplexing table that most closely matches the model of the current mobile terminal from the locally stored multiplexing table.

4. The method of claim 1, wherein decoding the 3G video call data using a locally saved multiplexing table comprises:

Selecting a preset multiplexing table or a multiplexing table that best matches the model of the current mobile terminal as a current decoding multiplexing table, and setting decoding parameters according to the current decoding multiplexing table, and performing the 3G video call data. Decoding

The solved audio and video data are respectively sent to the corresponding decoder for decoding and playing.

The method according to claim 1, wherein after obtaining the multiplexing table required for decoding from the 3G video call data that needs to be played, the method further includes:

In the case where the acquisition is successful, if the obtained multiplexing table required for the decoding is not locally saved, the multimedia playback system saves the multiplexing table required for the decoding.

The method according to any one of claims 1 to 5, wherein the 3G video call data is decoded by the H.324 protocol using a locally saved multiplexing table. A decoding device for video call data, comprising:

The obtaining module is configured to obtain a multiplexing table required for decoding from the 3G mobile communication 3G video call data that needs to be played;

The decoding module is configured to decode the 3G video call data using a locally saved multiplexing table if the acquisition fails. The device according to claim 7, further comprising: a playing module, configured to play a 3G video call between mobile terminals based on different manufacturer chips; and a saving module configured to obtain and save according to the result of playing by the playing module A multiplexing table corresponding to the 3G video call. The device according to claim 7 or 8, further comprising:

a selection module, configured to obtain the identification information of the current mobile terminal from the 3G video call data, where the identifier information includes at least one of the following: a vendor name, a product number, a product version number, and according to the identifier The information selects a multiplex table that best matches the model of the current mobile terminal from a locally stored multiplex table. The apparatus according to claim 9, wherein said apparatus is a multimedia playback system.