CN113141352B - Multimedia data transmission method and device, computer equipment and storage medium - Google Patents
Multimedia data transmission method and device, computer equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L65/40—Support for services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The application relates to a multimedia data transmission method, a multimedia data transmission device, computer equipment and a storage medium. The method comprises the following steps: under the condition of establishing call connection with a second terminal, sending a first message containing a first video capability set supported by the first terminal to the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol; receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal; taking intersection of the second video capability set and the first video capability set to obtain a target video capability set; and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data. The method can improve the quality of the transmitted video image.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for transmitting multimedia data, a computer device, and a storage medium.
Background
With the development of multimedia technology, streaming media streaming is in vigorous demand in traditional applications, new demands are generated in industries such as video conferences, distance education, digital courtrooms and the like, higher requirements are also made on a host, and users expect that multimedia applications provide streaming media streaming capabilities with higher definition and more channels to meet the demands of users in different application scenes.
However, in the current transmission mode of multimedia data, since the multimedia communication control protocol cannot cover all the methods for representing the audio/video encoding/decoding capability, the optimal encoding/decoding capability cannot be used for transmitting the multimedia data in the audio/video conference, which easily causes the poor streaming pushing capability of the streaming media and the low quality of the transmitted video image.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a transmission method, apparatus, computer device and storage medium for multimedia data capable of improving the quality of transmitted video images.
A transmission method of multimedia data is applied to a first terminal, and the method comprises the following steps:
under the condition of establishing call connection with a second terminal, sending a first message containing a first video capability set supported by the first terminal to the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol;
receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal;
taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
In one embodiment, the field information at least includes: a level field, a horizontal field, a level field, a maximum luma picture size field, a maximum luma sampling rate field, a maximum picture update rate field, and a maximum bitrate field; wherein the profile field is a description of compression characteristics of the video; the level field specifies decoder processing burden and storage capacity parameters; the hierarchy field specifies the level of the code rate for each level.
In one embodiment, before sending the first message including the first video capability set supported by the first terminal to the second terminal, the method further includes:
and writing the relevant fields representing the video coding and decoding capacity into the data corresponding to the newly added capacity item according to the control signaling protocol.
In one embodiment, the generating manner of the first video capability set includes:
calling an interface for acquiring video capability according to a control signaling protocol, and acquiring text information in a preset folder through the interface;
and extracting field information in the text information to obtain the first video capability set supported by the user.
In one embodiment, the newly added video capability item is a high-efficiency video coding capability item;
the method further comprises the following steps:
sending a first video capability set containing a high-efficiency video coding capability item to a second terminal so as to indicate that when the second terminal receives the first video capability set, fields in the first video capability set are analyzed to obtain the first video capability set containing the high-efficiency video coding capability item, and taking intersection of the first video capability set and a second video capability set supported by the first video capability set to obtain a target video capability set.
In one embodiment, the determining a target video capability item from the target video capability set comprises:
acquiring coding and decoding parameters corresponding to each video capability item in the target video capability set;
and determining the target video capacity item from the target video capacity set according to the coding and decoding parameters.
An apparatus for transmission of multimedia data, the apparatus comprising:
the first sending module is used for sending a first message containing a first video capability set supported by a first terminal to a second terminal under the condition of establishing call connection with the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol;
a first receiving module, configured to receive a second message sent by the second terminal;
the analysis module is used for analyzing the field information in the second message to obtain a second video capability set supported by the second terminal;
the calculation module is used for taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and the determining module is used for determining a target video capacity item from the target video capacity set and calling a logic channel corresponding to the target video capacity item to transmit multimedia data.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
under the condition of establishing call connection with a second terminal, sending a first message containing a first video capability set supported by a first terminal to the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol;
receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal;
taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
under the condition of establishing call connection with a second terminal, sending a first message containing a first video capability set supported by the first terminal to the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol;
receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal;
taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
A transmission method of multimedia data is applied to a second terminal, and the method comprises the following steps:
under the condition of establishing call connection with a first terminal, sending a second message containing a second video capability set supported by a second terminal to the first terminal; the second video capability set comprises newly added video capability items; the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol;
receiving a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal;
analyzing field information in the first message to obtain a first video capability set supported by the first terminal;
taking intersection of the first video capability set and the second video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
An apparatus for transmission of multimedia data, the apparatus comprising:
the second sending module is used for sending a second message containing a second video capability set supported by a second terminal to the first terminal under the condition of establishing call connection with the first terminal; the second video capability set comprises newly added video capability items; the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol;
the second receiving module is used for receiving a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal;
the analysis module is used for analyzing the field information in the first message to obtain a first video capability set supported by the first terminal;
the computing module is used for taking intersection of the first video capability set and the second video capability set to obtain a target video capability set;
and the determining module is used for determining a target video capacity item from the target video capacity set and calling a logic channel corresponding to the target video capacity item to transmit multimedia data.
A computer device comprising a memory storing a computer program and a processor implementing the following steps when the computer program is executed:
under the condition of establishing call connection with a first terminal, sending a second message containing a second video capability set supported by a second terminal to the first terminal; the second video capability set comprises newly added video capability items; the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol;
receiving a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal;
analyzing field information in the first message to obtain a first video capability set supported by the first terminal;
taking intersection of the first video capability set and the second video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
under the condition of establishing call connection with a first terminal, sending a second message containing a second video capability set supported by a second terminal to the first terminal; the second video capability set comprises newly added video capability items; the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol;
receiving a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal;
analyzing field information in the first message to obtain a first video capability set supported by the first terminal;
taking intersection of the first video capability set and the second video capability set to obtain a target video capability set;
and determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
In the case of establishing a call connection with the second terminal, the method, the apparatus, the computer device, and the storage medium for transmitting multimedia data send a first message including a first video capability set supported by the first terminal to the second terminal, where the first video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the first terminal according to a manner specified by a control signaling protocol. Receiving a second message sent by a second terminal, analyzing field information in the second message to obtain a second video capability set supported by the second terminal, taking intersection of the second video capability set and the first video capability set to obtain a target video capability set, determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data. Therefore, the original video capability type is expanded through the newly added capability item, the multimedia data transmission can be carried out by using the optimal coding and decoding capability in the audio and video conference, the stream pushing capability of the streaming media is effectively improved, and the quality of the transmitted video image is also greatly improved.
In the case of establishing a call connection with the first terminal, the method, the apparatus, the computer device, and the storage medium for transmitting multimedia data send a second message to the first terminal, where the second message includes a second video capability set supported by the second terminal itself, the second video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol. The method comprises the steps of receiving a first message which is sent by a first terminal and contains a first video capability set supported by the first terminal, analyzing field information in the first message to obtain a first video capability set supported by the first terminal, taking intersection of the first video capability set and a second video capability set to obtain a target video capability set, determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data. Therefore, the original video capability type is expanded through the newly added capability item, the multimedia data transmission can be carried out by using the optimal coding and decoding capability in the audio and video conference, the stream pushing capability of the streaming media is effectively improved, and the quality of the transmitted video image is also greatly improved.
Drawings
FIG. 1 is a diagram illustrating an exemplary embodiment of a method for transmitting multimedia data;
FIG. 2 is a flow chart illustrating a method for transmitting multimedia data according to an embodiment;
FIG. 3 is a flowchart illustrating the manner in which a first set of video capabilities are generated in one embodiment;
FIG. 4 is a flowchart illustrating the step of determining a target video capability item from a target video capability set in one embodiment;
FIG. 5 is a flow chart illustrating a method for transmitting multimedia data according to another embodiment;
FIG. 6 is a block diagram showing the construction of a transmission apparatus for multimedia data according to one embodiment;
FIG. 7 is a block diagram showing a transmission apparatus of multimedia data according to another embodiment;
FIG. 8 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
The multimedia data transmission method provided by the application can be applied to the application environment shown in fig. 1. Wherein the first terminal 102 communicates with the second terminal 104 via a network. Under the condition that the first terminal 102 establishes call connection with the second terminal 104, the first terminal 102 sends a first message containing a first video capability set supported by the first terminal 102 to the second terminal 104, where the first video capability set contains a newly added video capability item, and the newly added video capability item is constructed by the first terminal 102 according to a mode specified by a control signaling protocol. The first terminal 102 receives a second message sent by the second terminal 104, the first terminal 102 analyzes field information in the second message to obtain a second video capability set supported by the second terminal 104, the first terminal 102 obtains an intersection of the second video capability set and the first video capability set to obtain a target video capability set, the first terminal 102 determines a target video capability item from the target video capability set, and invokes a logical channel corresponding to the target video capability item to transmit multimedia data. The first terminal 102 and the second terminal 104 may be, but are not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, as shown in fig. 2, a method for transmitting multimedia data is provided, which is described by taking the method as an example for being applied to the first terminal in fig. 1, and includes the following steps:
step 202, in the case of establishing a call connection with the second terminal, sending a first message including a first video capability set supported by the first terminal to the second terminal, where the first video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol.
With the fact that the new video compression standard, which is the HECV, has formally become an international standard, devices in a video conference can already support the video coding and decoding algorithm of the HECV, but the h.323 protocol does not provide a representation method about the HECV capability, so that the capability negotiation of the HECV still cannot be performed among the devices in the video conference, and the HECV standard cannot be used for coding and decoding video data, so as to achieve a video conference with higher video quality. HECV, namely High-Efficiency Video Coding, is an abbreviation of High Efficiency Video Coding, is a new Video compression standard, and is used to replace the H.264/AVC Coding standard, which is also called H.265. H.323 is a communication control protocol established by the ITU for providing multimedia services in a packet switched network. The main content of the h.323 protocol includes a packet-switched network based multimedia communication system, and this protocol generally introduces the requirements of packet-switched network based video conferencing systems and terminals, explaining the basic procedure of call setup.
Specifically, a terminal call based on the h.323 protocol is described as an example. Two multimedia communication devices in a network carry out H.323 communication, in the calling process, namely under the condition that a first terminal establishes call connection with a second terminal, the first terminal sends a first message containing a first video capability set supported by the first terminal to the second terminal, the first video capability set contains a newly added video capability item, and the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol. The first video capability set refers to a coding and decoding mode of an audio and video protocol supported by the first terminal, for example, audio has G711 and G722 protocols, and video has H263 and H264 protocols, and the first video capability set may include different video capability items. The newly added video capability Item refers to a coding and decoding mode of a newly added audio/video protocol, for example, a capability set is constructed according to a mode specified by an h.245 protocol, the newly added capability Item is to insert a newly added capability Item on the basis of an original capability set, as shown in the following code, an H264 video capability itself only includes items (Item)11, 12, 13, and Item14 is a newly inserted HECV (h.265) capability Item.
Item11 CapabilityTableEntry
CapabilityTableEntry:264 (optional capabilities)
capability:receiveAndTransmitVideoCapability(3)
receiveAndRansmitvideoCapacity: genericVideoCapacity Item12: Capacity TableEntry
capabilityTableEntry:1264 (optional capabilities)
capability:receiveAndTransmitVideoCapability(3)
receiveAndRansmitvideoCapacity: genericVideoCapacity Item13: Capacity TableEntry
CapabilityTableEntry:4264 (optional capabilities)
capability:receiveAndTransmitVideoCapability(3)
receiveAndRansmitvideoCapacity New augmentation of genericVideoCapacity: item14 CapabilityTableEntry
CapabilityTableEntry:265 (optional capabilities)
capability:receiveAndTransmitVideoCapability(3)
receiveAndRansmitvideoCapability: non Standard (Transmission Capacity)
The control signaling protocol can be an H.245 standard protocol, namely a media communication control protocol, which specifies specific communication control signaling and describes various communication messages (including signaling in the aspect of multipoint control). H.245 Control protocol for multimedia communication, multimedia communication Control protocol. H.245 is a control signaling protocol in the h.323 multimedia communication system, which is mainly used for end-to-end h.245 information exchange between h.323 endpoints or terminals in communication. The h.245 standard protocol specifies a specific representation manner of each audio/video protocol, for example, a first terminal, that is, a home terminal, supports a G711 protocol and an H263 protocol, what should be represented in the h.245 standard by the G711 protocol, what should be represented in the h.245 standard by the H263 protocol, that is, when the first terminal sends a capability set supported by itself to a second terminal, it needs to represent the capability set supported by the home terminal according to a control signaling protocol, and represent a coding and decoding manner that the device supports the G711 protocol/the H263 protocol according to a manner specified by the h.245 standard protocol.
And 204, receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal.
After the first terminal sends a first message containing a first video capability set supported by the first terminal to the second terminal, the first terminal receives a second message sent by the second terminal, and the first terminal analyzes field information in the second message to obtain a second video capability set supported by the second terminal. The second message refers to a message for negotiating the capability between the master device and the slave device for h.323 communication. The second video capability set refers to an encoding and decoding mode of an audio/video protocol supported by the second terminal, and the second video capability set comprises different video capability items. The field information refers to information describing video capabilities. For example, the field information may contain information indicating video capabilities such as (Profile) Level, (Level) Level, (Tier) Level, (Max-lps) maximum luminance picture size, (Max-lsr) maximum luminance sampling rate, (Max-fps) maximum picture update rate, and (Max-br) maximum bit rate.
For example, after the first terminal receives the second message sent by the second terminal, the first terminal may parse field information in the second message, and obtain information describing video capabilities as: the HECV version is 1Profile-id:1, the Tier-id is 1, the Level-id is 120, the Bitrate is 60800, the Max-lps is 2073600, the Max-lsr is 62208000, the Max-fps is 3000, and the Max-br is 6080000, so that the first terminal can obtain all video capability items supported by the second terminal, namely a second video capability set according to the obtained information for describing the video capability.
And step 206, taking intersection of the second video capability set and the first video capability set to obtain a target video capability set.
And after the first terminal analyzes the field information in the second message to obtain a second video capability set supported by the second terminal, the first terminal acquires an intersection of the second video capability set and the first video capability set to obtain a target video capability set. The method for obtaining the target video capability set is not limited to the operation mode of taking intersection, and may also include calling a function or other modes. Specifically, it is assumed that the first terminal is device a, which supports audio G711A, G711U, G723, video H263, H264 BP; the second terminal is a device B which supports audio G722, G711U and G711A and videos H264BP and H264 HP; the common capability of the device a and the device B is the intersection of the capabilities supported by the two parties, and the common capability is obtained, that is, the audio G711A, the G711U and the video H264BP are the target capability set common to the device a and the device B.
And step 208, determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
And after the first terminal acquires the intersection of the second video capability set and the first video capability set to obtain a target video capability set, the first terminal determines a target video capability item from the target video capability set and calls a logic channel corresponding to the target video capability item to transmit multimedia data. The first terminal can determine the target video capacity item from the target video capacity set according to the sequence of the capacity items when the second terminal sends the second video capacity set, and call a logic channel corresponding to the target video capacity item to transmit the multimedia data. For example, the second terminal may rank the capabilities in the second video capability set according to a preset policy and then send the ranked capabilities to the first terminal, and then the first terminal may determine the target video capability items according to the rank order of the capabilities when the second terminal sends the second video capability set.
Assuming that the first terminal is a device a, supporting audio G711A, G711U, G723, video H263, H264 BP; the second terminal is a device B which supports audio G722, G711U and G711A and videos H264BP and H264 HP; the first terminal intersects the second video capability set with the first video capability set to obtain target video capability sets of audio G711A, G711U and video H264BP, that is, audio G711A, G711U and video H264BP are target capability sets shared by device a and device B. When the first terminal and the second terminal call the channel to transmit the multimedia data, the audio can open the channel corresponding to the G711A capability item or the G711U capability item, and the video can only open the channel corresponding to the H264BP capability item. As for whether the device a and the device B open the channel corresponding to G711A or the channel corresponding to G711U, it is determined by the respective preset policies that both devices may open G771A or both devices open G771U, or one of the device a and the device B may open G711A and the other device open G711U. In addition, aiming at a multipoint conference, namely, hundreds of endpoints exist at the same time, or a multi-state MCU device can also meet the requirement of a high-definition video conference, namely, the negotiation of newly added capability (HECV video capability) is realized. MCU (multi Control unit), i.e. a Multipoint access unit, the MCU can be decomposed into an MC (Multipoint Controller) and an MP (Multipoint Processor), wherein the MC processes Multipoint signaling, and the MP is responsible for media processing of Multipoint communication.
In a conventional multimedia data transmission mode, in an h.323 call process, capability negotiation needs to be performed by using an h.245 standard protocol, but video capabilities specified in the h.245 standard protocol are limited, and no HECV capability representation method is provided, so that the HECV standard still cannot be used in an audio video conference to improve video quality.
In this embodiment, when a call connection is established with the second terminal, a first message including a first video capability set supported by the first terminal itself is sent to the second terminal, where the first video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the first terminal according to a manner specified by a control signaling protocol. The method comprises the steps of receiving a second message sent by a second terminal, analyzing field information in the second message to obtain a second video capability set supported by the second terminal, intersecting the second video capability set with a first video capability set to obtain a target video capability set, determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data. Therefore, the original video capability type is expanded through the newly added capability item, the multimedia data transmission can be carried out by using the optimal coding and decoding capability in the audio and video conference, the stream pushing capability of the streaming media is effectively improved, and the quality of the transmitted video image is also greatly improved. Meanwhile, the negotiation of the new capability (HECV video capability) is carried out according to the H.245 standard protocol in the H.323 calling process, the problem that the HECV video capability cannot be negotiated in the traditional mode is solved, the market and customer requirements are met, and good experience is brought to users.
In one embodiment, the field information includes at least: a profile field, a level field, a maximum luma picture size field, a maximum luma sample rate field, a maximum picture update rate field, and a maximum bitrate field. Wherein, the grade field is the description of the compression characteristic of the video, the level field specifies the decoder processing burden and the storage capacity parameter, and the hierarchy field specifies the code rate of each level. In the H.323 calling process, capability negotiation needs to be carried out by using an H.245 standard protocol, and because video capabilities specified in the H.245 standard protocol are limited, a HECV capability representation method is not specified at present, and HECV video capabilities cannot be represented. Therefore, in the embodiment, it can be preset that HECV capability is represented by using a nonStandard item, where the nonStandard item is an extended capability type given to some capabilities not defined by the protocol standard when the h.245 standard protocol represents the capability item, that is, the nonStandard item represents the extended capability item. Data field information can be filled in the nonStandard according to a preset rule. For example, the newly added items: item16 CapabilityTableEntry
capabilityTableEntry:265
capability:receiveAndTransmitVideoCapability(3)
receiveAndTransmitVideoCapability:nonStandard(0)
nonStandard
nonStandardIdentifier:
data:484543562076657273696f6e…
Text:HECV version:1 Profile-id:1 Tier-id:1 Level-id:93BitRate:19840Max-lps:921600Max-lsr:27648000Max-fps:3000Max-br:1984000
[Length:124]
According to the HECV standard, fields for determining the video capability comprise a Profile grade, a Level, a Tier Level, a Max-lps maximum brightness picture size, a Max-lsr maximum brightness sampling rate, a Max-fps maximum picture update rate and a Max-br maximum bit rate, and corresponding values of the fields are filled in data fields of the H.245 standard protocol, so that the corresponding HECV capability can be represented. It will be appreciated that other fields may be included in addition to the enumerated fields described above, which may represent key parameters of HECV capability.
The Data field is written with various parameter values corresponding to HECV capacity according to a format of HECV version 1Profile-id 1Tier-id 1Level-id 120Bitrate 60800Max-lps 2073600Max-lsr 62208000Max-fps 3000Max-br 6080000, wherein: version number is 1, and is expressed as the first version for describing HECV capability; profile-id Profile field: the Main profile of a conventional 8-bit pixel precision is 1, the Main 10profile supporting 10-bit pixel precision is 2, and the Main Still Picture profile supporting a Still image is 3; tier-id hierarchy field: main tier is 1, High tier is 2; level-id field: a Level value of 30, for example, if the Level value is 3.1, then the Level-id field is filled with 93: 3.1 × 30; a Bitrate field: the video capacity occupies the call bandwidth, and the unit is as follows: 100 bits/s, e.g., bandwidth 1M, then the BitRate field is padded 10240; max-lps field: writing in true length and width, for example, in the format of 720P, then writing in the Max-lps field 1280 by 720 — 921600; max-lsr field: filling in according to the real length-width and length-width frame rate, for example, the format is 720P30, and then the Max-lsr field is filled with 1280-720-30-27648000; max-fps field: fill frame rate 100, e.g., frame rate 25, Max-fps field 2500; max-br field: fill in the call bandwidth occupied by this video capability, unit: 1bit/s, e.g., 1M bandwidth, the Max-br field is padded with 1024000. Therefore, data field information corresponding to the newly-added capability item is filled in the non Standard item according to a preset rule, negotiation of the newly-added capability (HECV video capability) according to an H.245 standard protocol in the H.323 calling process is achieved, the problem that HECV video capability cannot be negotiated in a traditional mode is solved, market and customer requirements are met, and good experience is brought to a user.
In an embodiment, before sending the first message including the first video capability set supported by the first terminal to the second terminal, the method further includes a step of constructing a new capability item, which specifically includes:
and according to the control signaling protocol, writing the relevant fields representing the video coding and decoding capability into the data corresponding to the newly added capability item.
Before the first terminal sends the first message containing the first video capability set supported by the first terminal to the second terminal, a newly added capability item may be constructed in the terminal device in advance. Specifically, the data field information may be written in the nonStandard according to a preset rule, that is, the finally transmitted data packet may conform to the encoding system specified by the h.245 protocol. Specifically, the first terminal may write the relevant fields representing the video codec capabilities into the data corresponding to the newly added capability item according to the control signaling protocol, for example, the values representing the parameters corresponding to the HECV capabilities may be written into the data fields of the h.245 standard protocol according to a format of "HECV version:1Profile-id:1Tier-id:1Level-id:120BitRate:60800Max-lps:2073600Max-lsr:62208000Max-fps:3000Max-br: 6080000". Therefore, the HECV capability representation mode is constructed to be used for capability negotiation at two ends during H.323 calling, and the problems that video capabilities specified in an H.245 standard protocol are limited and HECV video capabilities cannot be negotiated are solved.
In one embodiment, as shown in fig. 3, the step of generating the first video capability set includes:
And step 304, extracting field information in the text information to obtain a first video capability set supported by the user.
The description will be made by taking a terminal call based on the h.323 protocol as an example. Two multimedia communication devices in the network carry out H.323 communication, and in the calling process, the first terminal can obtain a first video capability set supported by the first terminal and send the first video capability set supported by the first terminal to the second terminal. Specifically, the first terminal may call an interface for acquiring the video capability according to the control signaling protocol, and acquire the text information in the preset folder through the interface. Further, the first terminal may extract field information in the text information, and may obtain the first video capability set supported by the first terminal. Therefore, the problem that HECV video capability cannot be represented when an H.323 call is carried out is solved by means of representing HECV capability through newly added terms, HECV capability negotiation can be carried out among devices in an audio and video conference, video data is coded and decoded by using an HECV standard, and the audio and video conference with higher video quality is achieved
In one embodiment, the newly added video capability item is a high efficiency video coding capability item, and the method further comprises:
and sending the first video capability set containing the high-efficiency video coding capability item to a second terminal to indicate the second terminal to analyze fields in the first video capability set when receiving the first video capability set to obtain the first video capability set containing the high-efficiency video coding capability item, and taking intersection of the first video capability set and a second video capability set supported by the first video capability set to obtain a target video capability set.
When the newly added video capability item is a high-efficiency video coding capability item (HECV capability item), in a call process of h.323 communication, the first terminal may send a first video capability set including the newly added capability item as the HECV capability item to the second terminal, so as to indicate that the second terminal analyzes fields in the first video capability set when receiving the first video capability set, to obtain a first video capability set including the HECV capability item, and obtain an intersection of the first video capability set and a second video capability set supported by the first terminal, to obtain a target video capability set, where the target video capability set includes the HECV capability item. For example, the newly added items: the content 'Text: HECV version:1Profile-id:1Tier-id:1Level-id:93BitRATE:19840Max-lps:921600Max-lsr:27648000Max-fps:3000Max-br: 1984000' contained in Item16, the first terminal can call the original interface for acquiring video capability of H.245, directly acquire the content in the Text through the original interface of H.245, and then split the character string information in the Text by the first terminal, so that the value of each specific field corresponding to HECV capability can be analyzed. Therefore, by analyzing the character string in the Text field, the key parameters of the newly added capability item can be quickly and efficiently analyzed, and the capability negotiation at two ends can be realized when H.323 calling is carried out.
In one embodiment, as shown in FIG. 4, the step of determining a target video capability item from a target video capability set includes:
And step 404, determining a target video capability item from the target video capability set according to the coding and decoding parameters.
And after the first terminal acquires the intersection of the second video capability set and the first video capability set to obtain a target video capability set, the first terminal determines a target video capability item from the target video capability set and calls a logic channel corresponding to the target video capability item to transmit multimedia data. Specifically, the first terminal may obtain the encoding and decoding parameters corresponding to each video capability item in the target video capability set. Further, the first terminal determines a target video capability item from the target video capability set according to the encoding and decoding parameters.
The first terminal may determine the target video capability items according to the sequence of the arrangement of the capability items when the second terminal sends the second video capability set, that is, determine the target video capability items according to the sequence of the arrangement of the capability items in the second video capability set. For example, assuming that the second terminal supports both the H264BP capability item and the HECV capability item, since the HECV capability item is arranged in front of the H264BP capability item, the first terminal may determine the target video capability item as the HECV capability item from the target video capability set (H264BP capability item and HECV capability item) according to a preset strategy and call a logical channel corresponding to the HECV capability item to transmit multimedia data. Therefore, the original video capability type is expanded through the newly added capability item, the optimal coding and decoding capability can be selected in the audio and video conference to transmit multimedia data, the stream pushing capability of the streaming media is effectively improved, and the quality of transmitted video images is greatly improved.
In one embodiment, as shown in fig. 5, a method for transmitting multimedia data is provided, which is described by taking the method as an example for being applied to the second terminal in fig. 1, and includes the following steps:
step 502, in a case of establishing a call connection with the first terminal, sending a second message including a second video capability set supported by the second terminal to the first terminal, where the second video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol.
And step 508, taking intersection of the first video capacity set and the second video capacity set to obtain a target video capacity set.
And step 510, determining a target video capability item from the target video capability set, and calling a logic channel corresponding to the target video capability item to transmit multimedia data.
Two multimedia communication devices in a network carry out H.323 communication, a device A initiates a call to a device B, and if the device A is a first terminal and the device B is a second terminal, the second terminal sends a second message containing a second video capability set supported by the second terminal to the first terminal under the condition that the second terminal establishes call connection with the first terminal, wherein the second video capability set contains a newly added video capability item, and the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol. Namely, the device a and the device B respectively construct their own capability sets according to the h.245 protocol, add a new video capability item in the capability sets, write the relevant field representing the HECV capability into the newly added video capability item according to the preset mode, and send the constructed capability sets (including the newly added HECV capability item) to the other side. The second terminal receives a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal, analyzes field information in the first message to obtain a first video capability set supported by the first terminal, and obtains an intersection of the first video capability set and the second video capability set to obtain a target video capability set. And the second terminal determines a target video capability item from the target video capability set and calls a logic channel corresponding to the target video capability item to transmit the multimedia data. When receiving the capability set of the other party, the newly added video capability item is analyzed to obtain the relevant field of HECV capability according to the preset mode, and performs capability negotiation with the capability of the equipment A, and the equipment B respectively open the corresponding logic channel according to the result of the capability negotiation and perform media data transmission. Therefore, HECV capability can be expressed in the H.323 protocol, HECV capability negotiation can be carried out among all devices in the audio and video conference, video data coding and decoding are carried out by using the HECV standard, and the video conference with higher video quality is achieved.
It should be understood that although the various steps in the flow charts of fig. 1-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-5 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 6, there is provided a transmission apparatus of multimedia data, including: a first sending module 602, a first receiving module 604, a parsing module 606, a calculating module 608, and a determining module 610, wherein:
a first sending module 602, configured to send, to a second terminal, a first message including a first video capability set supported by the first terminal itself when a call connection is established with the second terminal, where the first video capability set includes a newly added video capability item, and the newly added video capability item is constructed by the first terminal according to a manner specified by a control signaling protocol.
A first receiving module 604, configured to receive a second message sent by a second terminal.
And the parsing module 606 is configured to parse the field information in the second message to obtain a second video capability set supported by the second terminal.
And a calculating module 608, configured to obtain an intersection of the second video capability set and the first video capability set to obtain a target video capability set.
And the determining module 610 is configured to determine a target video capability item from the target video capability set, and invoke a logical channel corresponding to the target video capability item to transmit multimedia data.
In one embodiment, the apparatus further comprises: and writing into a module.
And the writing module is used for writing the relevant fields representing the video coding and decoding capacity into the data corresponding to the newly added capacity item according to the control signaling protocol.
In one embodiment, the apparatus further comprises: the device comprises an acquisition module and an extraction module.
The acquisition module is used for calling an interface for acquiring video capability according to a control signaling protocol and acquiring text information in a preset folder through the interface. The extraction module is used for extracting field information in the text information to obtain a first video capability set supported by the extraction module.
In an embodiment, the sending module is further configured to send the first video capability set including the high-efficiency video coding capability item to the second terminal, so as to instruct the second terminal to, when receiving the first video capability set, parse fields in the first video capability set to obtain the first video capability set including the high-efficiency video coding capability item, and intersect the first video capability set with a second video capability set supported by the first terminal to obtain the target video capability set.
In one embodiment, the obtaining module is further configured to obtain a codec parameter corresponding to each video capability item in the target video capability set. The determining module is further configured to determine a target video capability item from the target video capability set according to the encoding and decoding parameters.
In one embodiment, as shown in fig. 7, there is provided a transmission apparatus of multimedia data, including: a second sending module 702, a second receiving module 704, a parsing module 706, a calculating module 708, and a determining module 710, wherein:
a second sending module 702, configured to send, to the first terminal, a second message including a second video capability set supported by the second terminal itself under the condition that the call connection is established with the first terminal, where the second video capability set includes a newly added video capability item, and the newly added video capability item is configured by the second terminal according to a manner specified by the control signaling protocol.
A second receiving module 704, configured to receive a first message sent by the first terminal and containing a first video capability set supported by the first terminal itself.
The parsing module 706 is configured to parse the field information in the first message to obtain a first video capability set supported by the first terminal.
And the calculating module 708 is configured to obtain an intersection of the first video capability set and the second video capability set to obtain a target video capability set.
And the determining module 710 is configured to determine a target video capability item from the target video capability set, and invoke a logical channel corresponding to the target video capability item to transmit multimedia data.
For specific limitations of the transmission device of multimedia data, reference may be made to the above limitations on the transmission method of multimedia data, which are not described in detail herein. The various modules in the above-described transmission apparatus for multimedia data may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of transmitting multimedia data. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 8 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the steps of the above-described method embodiments being implemented when the computer program is executed by the processor.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for transmitting multimedia data, the method being applied to a first terminal, the method comprising:
under the condition of establishing a call connection with a second terminal based on an H.323 protocol, sending a first message containing a first video capability set supported by the first terminal to the second terminal; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol; the control signaling protocol is an H.245 standard protocol and is used for exchanging end-to-end H.245 information between terminals in communication;
receiving a second message sent by the second terminal, and analyzing field information in the second message to obtain a second video capability set supported by the second terminal;
taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and determining a target video capacity item from the target video capacity set according to the sequence of the arrangement of the capacity items when the second terminal sends the second video capacity set, and calling a logic channel corresponding to the target video capacity item to transmit multimedia data.
2. The method of claim 1, wherein the field information at least comprises: a level field, a horizontal field, a level field, a maximum luma picture size field, a maximum luma sampling rate field, a maximum picture update rate field, and a maximum bitrate field; wherein the profile field is a description of compression characteristics of the video; the level field specifies decoder processing burden and storage capacity parameters; the hierarchy field specifies the level of the code rate for each level.
3. The method of claim 1, wherein before sending the first message to the second terminal, the first message comprising the first set of video capabilities that the first terminal itself supports, the method further comprises:
and writing the relevant fields representing the video coding and decoding capacity into the data corresponding to the newly added capacity item according to the control signaling protocol.
4. The method of claim 1, wherein the first set of video capabilities is generated in a manner that comprises:
according to a control signaling protocol, calling an interface for acquiring video capability, and acquiring text information in a preset folder through the interface;
and extracting field information in the text information to obtain the first video capability set supported by the user.
5. The method of claim 1, wherein the added video capability item is a high efficiency video coding capability item;
the method further comprises the following steps:
sending a first video capability set containing a high-efficiency video coding capability item to a second terminal so as to indicate that when the second terminal receives the first video capability set, fields in the first video capability set are analyzed to obtain the first video capability set containing the high-efficiency video coding capability item, and taking intersection of the first video capability set and a second video capability set supported by the first video capability set to obtain a target video capability set.
6. The method according to claim 1, wherein the determining a target video capability item from the target video capability set according to the sequence of the respective capability items when the second terminal transmits the second video capability set comprises:
acquiring coding and decoding parameters corresponding to each video capability item in the target video capability set;
and determining the target video capacity item from the target video capacity set according to the coding and decoding parameters.
7. A method for transmitting multimedia data, the method being applied to a second terminal, the method comprising:
under the condition of establishing call connection with a first terminal based on an H.323 protocol, sending a second message containing a second video capability set supported by a second terminal to the first terminal; the second video capability set comprises newly added video capability items; the newly added video capability item is constructed by the second terminal according to a mode specified by a control signaling protocol; the control signaling protocol is an H.245 standard protocol and is used for exchanging end-to-end H.245 information between terminals in communication;
receiving a first message which is sent by the first terminal and contains a first video capability set supported by the first terminal;
analyzing field information in the first message to obtain a first video capability set supported by the first terminal;
taking intersection of the first video capability set and the second video capability set to obtain a target video capability set;
and determining a target video capacity item from the target video capacity set according to the sequence of the arrangement of the capacity items when the second terminal sends the second video capacity set, and calling a logic channel corresponding to the target video capacity item to transmit multimedia data.
8. An apparatus for transmitting multimedia data, the apparatus comprising:
the first sending module is used for sending a first message containing a first video capability set supported by a first terminal to a second terminal under the condition that call connection is established between the first sending module and the second terminal based on an H.323 protocol; the first video capability set comprises newly added video capability items; the newly added video capability item is constructed by the first terminal according to a mode specified by a control signaling protocol; the control signaling protocol is an H.245 standard protocol and is used for exchanging end-to-end H.245 information between terminals in communication;
a first receiving module, configured to receive a second message sent by the second terminal;
the analysis module is used for analyzing the field information in the second message to obtain a second video capability set supported by the second terminal;
the computing module is used for taking intersection of the second video capability set and the first video capability set to obtain a target video capability set;
and the determining module is used for determining a target video capacity item from the target video capacity set according to the sequence of the arrangement of the capacity items when the second terminal sends the second video capacity set, and calling a logic channel corresponding to the target video capacity item to transmit multimedia data.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6792048B1 (en) * | 1999-10-29 | 2004-09-14 | Samsung Electronics Co., Ltd. | Terminal supporting signaling used in transmission and reception of MPEG-4 data |
| WO2007121264A2 (en) * | 2006-04-11 | 2007-10-25 | Dilithium Networks Pty Ltd. | Methods and apparatus for combining session acceleration techniques for media oriented negotiation acceleration |
| CN101494696A (en) * | 2002-12-12 | 2009-07-29 | 达丽星网络有限公司 | Methods and system for fast session establishment between equipment using H.324 and related telecommunications protocols |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772077B (en) * | 2008-12-26 | 2013-02-13 | 大唐移动通信设备有限公司 | Method, device and video conference system for transmitting real-time media stream data |
| CN101841689A (en) * | 2010-05-10 | 2010-09-22 | 艾诺通信系统（苏州）有限责任公司 | Video call connecting method based on H.245 |
| CN102761526B (en) * | 2011-04-28 | 2016-12-28 | 北京大唐高鸿数据网络技术有限公司 | VC 1 encodes the method that video and audio is transmitted in the terminal unit supporting H.323 protocol suite |
| CN102984493B (en) * | 2012-11-21 | 2016-03-02 | 华为终端有限公司 | The method of video data transmission, device and communication equipment |
| CN104702883A (en) * | 2013-12-04 | 2015-06-10 | 中兴通讯股份有限公司 | Method, device and equipment for realizing HEVC high-definition network element access |
-
2021
- 2021-03-26 CN CN202110325433.4A patent/CN113141352B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6792048B1 (en) * | 1999-10-29 | 2004-09-14 | Samsung Electronics Co., Ltd. | Terminal supporting signaling used in transmission and reception of MPEG-4 data |
| CN101494696A (en) * | 2002-12-12 | 2009-07-29 | 达丽星网络有限公司 | Methods and system for fast session establishment between equipment using H.324 and related telecommunications protocols |
| WO2007121264A2 (en) * | 2006-04-11 | 2007-10-25 | Dilithium Networks Pty Ltd. | Methods and apparatus for combining session acceleration techniques for media oriented negotiation acceleration |
Non-Patent Citations (1)
| Title |
|---|
| H.323系统中NAT穿越问题的研究和探讨;李冬青等;《计算机与数字工程》;20090920(第09期);第203-206页 * |
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Denomination of invention: Transmission methods, devices, computer equipment, and storage media for multimedia data Effective date of registration: 20230912 Granted publication date: 20220930 Pledgee: Guangxi Guangtou Zhanxin Investment Fund Partnership Enterprise (L.P.) Pledgor: IFREECOMM TECHNOLOGY Co.,Ltd. Registration number: Y2023980056247 |