CN111246155B - RTP message forwarding method and device for television wall server - Google Patents

RTP message forwarding method and device for television wall server Download PDF

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Publication number
CN111246155B
CN111246155B CN202010069346.2A CN202010069346A CN111246155B CN 111246155 B CN111246155 B CN 111246155B CN 202010069346 A CN202010069346 A CN 202010069346A CN 111246155 B CN111246155 B CN 111246155B
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media
message
terminal
rtp
wall server
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CN111246155A (en
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胡丞
王焮灏
王守军
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Fujian Xingwang Intelligent Technology Co., Ltd
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Fujian Star Net Wisdom Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H04N7/152—Multipoint control units therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention provides a RTP message forwarding method of a television wall server, which comprises the following steps: the video wall server binds the conference terminal information with the appointed HDMI channel; the television wall server analyzes the received SIP message and extracts SDP media description information and a media port; and sending to the corresponding media daughter card; the media daughter card analyzes the SDP media description information and creates a decoder; establishing a conditional configuration message forwarding rule; the television wall server forwards the RTP message to the corresponding media daughter card according to the condition configuration message forwarding rule, then searches the corresponding decoder and HDMI channel through the media port of the RTP message, decodes the RTP message through the decoder, and outputs and displays the RTP message through the HDMI channel.

Description

RTP message forwarding method and device for television wall server
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and an apparatus for forwarding an RTP packet of a video wall server.
Background
The video wall server breaks through various limitations of a traditional MCU (multipoint control unit/video conference system) multi-split screen mode on display points and definition, thoroughly solves the problem of simultaneous display of multiple pictures for users, and enables the users to still watch high-definition multi-picture display in a low-bandwidth large-point conference.
The video wall server requires that the multi-channel RTP video streams in the video conference are respectively forwarded to the corresponding media sub-cards for processing according to user configuration, and the media sub-cards output pictures for display through an HDMI channel after completing the process of packet filtering, decoding, caption synthesis and the like, so that the multi-channel high-definition picture display is finally realized. However, with the increase of the number of conference points and the increasing of the RTP video flow, the multiple RTP video streams need to be quickly, accurately and completely forwarded to the corresponding media daughter cards according to the user configuration to be processed, which becomes a big problem of the video wall server.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an RTP packet forwarding method and apparatus for a video wall server, so as to ensure the real-time performance, accuracy and stability of the whole video wall server.
In a first aspect, the present invention provides a method comprising:
step 1, adding MCU conference terminal information to a television wall server;
step 2, the video wall server binds the conference terminal information with the appointed HDMI channel of the appointed media daughter card;
step 3, the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
step 4, SDP media description information and media ports of the main stream and the auxiliary stream are interactively sent to corresponding media daughter cards through a network;
step 5, the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder, and sets corresponding relations between the decoder and the media port as well as between the decoder and the HDMI channel;
step 6, after receiving SDP analysis completion response reported by the media daughter card, the television wall server configures message forwarding rules by taking conference terminal information, the media port and the media daughter card as conditions;
and 7, the video wall server forwards the RTP message to the corresponding media daughter card according to the condition configuration message forwarding rule, then searches the corresponding decoder and HDMI channel through the media port of the RTP message, decodes the RTP message through the decoder, and outputs the RTP message through the HDMI channel for display.
Further, the conference terminal information in step 1 includes a conference terminal number, a terminal IP address, and a terminal stream type.
Further, the step 2 is further specifically: the video wall server binds the conference terminal information with the designated HDMI channel of the designated media sub-card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media sub-card, the MAC address of the media sub-card and the HDMI number into a piece of data to be stored in a database and a memory.
Further, the step 6 is further specifically: after receiving an SDP analysis completion response reported by a media daughter card, the television wall server takes the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a condition configuration message forwarding rule, the condition configuration message forwarding rule modifies the target MAC address of the message into the media daughter card MAC address in the rule after matching by matching the source IP address and the target port of the message, and finally the message is forwarded to the specified media daughter card.
Further, the method further comprises a step 8 that after the television wall server receives the SIP message of the BYE, the message forwarding rule corresponding to the corresponding terminal is deleted, and the subsequent media daughter card will not receive the RTP video stream of the terminal any more.
In a second aspect, the present invention provides an apparatus comprising:
the adding module is used for adding MCU conference terminal information to the television wall server;
the video wall server binds the conference terminal information with the appointed HDMI channel of the appointed media daughter card;
the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
the sending module sends SDP media description information of the main stream and the auxiliary stream and the media port to the corresponding media daughter card through network interaction;
the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder and sets the corresponding relation between the decoder and a media port as well as the HDMI channel;
the rule module is used for configuring a message forwarding rule by taking the conference terminal information, the media port and the media daughter card as conditions after the video wall server receives an SDP analysis completion response reported by the media daughter card;
and the forwarding module is used for forwarding the RTP message to the corresponding media daughter card by the video wall server according to the condition configuration message forwarding rule, searching the corresponding decoder and the HDMI channel through the media port of the RTP message, decoding the RTP message through the decoder, and outputting the RTP message through the HDMI channel for display.
Further, the conference terminal information in the adding module includes a conference terminal number, a terminal IP address, and a terminal stream type.
Further, the binding module is further specifically: the video wall server binds the conference terminal information with the designated HDMI channel of the designated media sub-card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media sub-card, the MAC address of the media sub-card and the HDMI number into a piece of data to be stored in a database and a memory.
Further, the rule module is further specifically: after receiving an SDP analysis completion response reported by a media daughter card, the television wall server takes the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a condition configuration message forwarding rule, the condition configuration message forwarding rule modifies the target MAC address of the message into the media daughter card MAC address in the rule after matching by matching the source IP address and the target port of the message, and finally the message is forwarded to the specified media daughter card.
Further, the system further comprises a deleting module, after the television wall server receives the SIP message of the BYE, the message forwarding rule corresponding to the corresponding terminal is deleted, and the subsequent media daughter card will not receive the RTP video stream of the terminal.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the method and the device provided by the embodiment of the application realize that the multi-channel RTP streams in the video conference are quickly, accurately and completely forwarded to the corresponding media daughter card for corresponding processing, ensure that the media daughter card only receives the corresponding RTP streams and a small amount of configuration interactive messages, reduce the workload of the media daughter card, and finally ensure the real-time performance, the accuracy and the stability of the whole television wall server.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a flow chart of a video wall server RTP packet forwarding method according to the present invention.
Fig. 2 is a schematic diagram of a binding relationship between a user page terminal and a media daughter card channel according to the present invention.
Fig. 3 is a schematic diagram illustrating the RTP forwarding rule of the video wall server according to the present invention.
Detailed Description
By providing a method and a device in the embodiments of the present invention, the invention can quickly, accurately and completely forward multiple RTP video streams received in a large-volume video conference to the corresponding media daughter card for corresponding processing, so as to ensure that the media daughter card only receives the corresponding RTP stream and a small amount of configuration interaction messages, reduce the workload of the media daughter card, and finally ensure the real-time performance, accuracy and stability of the whole video wall server.
The technical scheme in the embodiment of the application has the following general idea: 1. the video wall server develops a set of user configuration UI pages, a user adds a conference terminal through the configuration UI pages, and the added content comprises a terminal number, a terminal IP address and a terminal main stream or auxiliary stream; 2. after the addition of the terminal number is completed, the user binds the terminal number with the designated HDMI channel of the designated media daughter card through the configuration page, and after the binding is completed, the video stream of the terminal in the subsequent video conference is forwarded to the HDMI channel of the video wall binding media daughter card for output and display; 3. the video wall server receives an SIP (session initiation protocol) message of a certain terminal in the video conference, analyzes and extracts SDP (session description protocol, storing media information negotiated in a session) information carried by the SIP message, and extracts a negotiated media Port. 4. And the television wall issues the extracted SDP media description information, the media Port and the bound HDMI channel number (n) of the terminal to the media daughter card bound with the terminal. 5. After receiving the media description SDP information sent by the television wall server, the media daughter card carries out SDP analysis and extracts the relevant parameters required by decoding and displaying the video RTP stream; adding a corresponding relation to a received destination Port and an HDMI channel number n, wherein the corresponding relation is used for indicating that the media daughter card decodes, outputs and displays an HDMI channel with a sequence number n when receiving RTP message flow with the destination Port as a Port subsequently; and after the media daughter card is analyzed, reporting the analysis result to a television wall server. 6. After receiving SDP analysis completion response reported by a media sub-card, the television wall server takes the extracted media Port, IP address of the terminal and media sub-card Mac address (m _ Mac) bound with the terminal as a condition configuration message forwarding rule, and the rule indicates that RTP stream messages which are sent from a certain terminal IP address and have a destination Port as a Port are forwarded to the media sub-card with the Mac address m _ Mac. 7. And the media daughter card determines which HDMI channel the received RTP stream is decoded, output and displayed according to the configured Port and HDMI channel number corresponding relation after receiving the RTP message stream forwarded by the television wall server. 8. The television wall server receives the BYE message of a certain terminal, deletes the message forwarding rule and the relevant record of the terminal, and the media daughter card can not receive the RTP video stream of the terminal.
As shown in fig. 1, in order to implement the RTP packet forwarding method of the video wall server, the method of the present invention is as follows:
step 1, a user adds MCU conference terminal numbers including terminal numbers, terminal IP addresses and terminal stream types (a main stream: a video signal of a camera connected with the MCU terminal and an auxiliary stream: a computer signal connected with the video conference terminal, for example, some conferences need to share some computer signals, such as the ppt, word and the like of a speaker) through a television wall server user configuration UI page.
And 2, the user binds the conference terminal number and the designated HDMI channel of the designated media daughter card through the user configuration page of the video wall server, the number, the IP address, the stream type of the conference terminal number and the number, the MAC address and the HDMI number of the media daughter card are recorded into a piece of data to be stored in a database and a memory by the binding, the binding relationship indicates that the main stream or the auxiliary stream of the conference terminal number is forwarded to the media daughter card bound with the main stream or the auxiliary stream by the video wall server for decoding processing, and the output picture of a certain HDMI channel bound with the media daughter card is displayed after the processing of the media daughter card is finished, as shown in FIG. 2.
Step 3, the television wall server hooks the message with the protocol type of SIP from the kernel and sends the SIP message to the upper layer of the television wall server for message analysis (ensuring that the upper layer only processes the SIP message related to the conference and reducing the workload of the television wall server), the method for matching the SIP message (matching the ACK acknowledgement response of the SIP message 200OK, wherein the ACK response carries the media information negotiated by the MCU and the MCU terminal), and after the terminal number and the terminal IP address are successfully matched (after the number and the IP of the terminal are received by the upper layer, the SIP message method is matched firstly, then the terminal number and the IP address carried by the SIP message are matched, and if the terminal number and the IP are matched, SDP extraction, storage and sending are carried out), the SDP information carried by the SIP message is analyzed and extracted, and the SDP media description information and the media port of the main stream and the auxiliary stream are mainly extracted.
And 4, after extracting the SDP media description information and the media port of the main stream and the auxiliary stream of the SIP message of the terminal number, sending the media description information, the media port and the HDMI channel number bound with the terminal to the media daughter card bound with the terminal.
Step 5, the media daughter card receives SDP media description information sent by the video wall server, then carries out SDP analysis, extracts relevant parameters (decoding mode, frame rate and the like) required by RTP stream decoding display, creates a decoder, and adds a corresponding relation with the received media port and the HDMI channel number, wherein the corresponding relation indicates that the media daughter card transmits RTP message streams of the target port to the corresponding decoder for decoding processing in the subsequent process, and outputs pictures to the corresponding HDMI channel for display after the decoding processing is finished; and after the media daughter card is analyzed, reporting the analysis result to a television wall server.
And 6, after receiving the SDP analysis completion response reported by the media daughter card, the television wall server takes the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a condition configuration message forwarding rule. The rule indicates that the RTP stream packet sent from the terminal is forwarded to the media daughter card with the designated MAC address for processing (since the session establishment process completes the media port negotiation, the destination port of the RTP video stream sent from the terminal is the media port that we extracted). The rule is implemented by matching the source IP address and the destination port of the packet (specifically, when the rule is added, the hash value is calculated and stored by using the terminal IP and the media port as keys, when the RTP packet is received, the source IP and the destination port of the packet are also extracted for hash calculation, then records are inquired), after the matching is completed, the destination MAC address of the packet is modified to be the MAC address of the media daughter card of the rule, and finally the packet is forwarded to the specified media daughter card, as shown in fig. 3.
Step 7, after receiving the RTP message forwarded by the television wall server, the media daughter card searches a corresponding decoder and an HDMI channel number through a destination port of the message, and sends the RTP to the decoder for decoding processing; and after the decoder finishes processing, delivering the processed media picture to a corresponding HDMI channel for output and display.
And step 8, after the upper layer of the television wall server receives the SIP message of which the terminal method is BYE, deleting the message forwarding rule corresponding to the terminal, and preventing the subsequent media daughter card from receiving the RTP video stream of the terminal. When a new conference video is established, the above processes are repeated, and the RTP stream in the television wall server is rapidly, accurately and completely forwarded.
Example one
The present embodiment provides a method, comprising; step 1, adding MCU conference terminal information by a television wall server, wherein the conference terminal information comprises a conference terminal number, a terminal IP address and a terminal stream type;
step 2, the video wall server binds the conference terminal information with the designated HDMI channel of the designated media daughter card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media daughter card, the MAC address of the media daughter card and the HDMI number into a piece of data to be stored in a database and a memory;
step 3, the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
step 4, SDP media description information and media ports of the main stream and the auxiliary stream are interactively sent to corresponding media daughter cards through a network;
step 5, the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder, and sets corresponding relations between the decoder and the media port as well as between the decoder and the HDMI channel;
step 6, after receiving SDP analysis completion response reported by a media daughter card, the television wall server takes the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a conditional configuration message forwarding rule, the conditional configuration message forwarding rule modifies the destination MAC address of the message into the media daughter card MAC address in the rule after matching is completed through matching the source IP address and the destination port of the message, and finally the message is forwarded to the specified media daughter card;
step 7, the video wall server forwards the RTP message to the corresponding media daughter card according to the condition configuration message forwarding rule, then searches the corresponding decoder and HDMI channel through the media port of the RTP message, decodes the RTP message through the decoder, and outputs and displays the RTP message through the HDMI channel;
and 8, after the television wall server receives the SIP message of the BYE, deleting the message forwarding rule corresponding to the corresponding terminal, and preventing the subsequent media daughter card from receiving the RTP video stream of the terminal.
Based on the same inventive concept, the application also provides a device corresponding to the method in the first embodiment, which is detailed in the second embodiment.
Example two
In this embodiment, an apparatus is provided, comprising:
the system comprises an adding module, a video wall server and a video conference system, wherein the video wall server adds MCU conference terminal information, and the conference terminal information comprises a conference terminal number, a terminal IP address and a terminal stream type;
the video wall server binds the conference terminal information with the designated HDMI channel of the designated media daughter card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media daughter card, the MAC address of the media daughter card and the HDMI number into a piece of data to be stored in the database and the memory;
the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
the sending module sends SDP media description information of the main stream and the auxiliary stream and the media port to the corresponding media daughter card through network interaction;
the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder and sets the corresponding relation between the decoder and a media port as well as the HDMI channel;
the rule module is used for taking the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a conditional configuration message forwarding rule after the video wall server receives an SDP analysis completion response reported by the media daughter card, the conditional configuration message forwarding rule modifies the target MAC address of the message into the media daughter card MAC address in the rule after matching is completed through matching the source IP address and the target port of the message, and finally the message is forwarded to the specified media daughter card;
the forwarding module is used for forwarding the RTP message to the corresponding media daughter card by the video wall server according to the condition configuration message forwarding rule, searching the corresponding decoder and the HDMI channel through the media port of the RTP message, decoding the RTP message through the decoder, and outputting the RTP message through the HDMI channel for display;
and the deleting module deletes the message forwarding rule corresponding to the corresponding terminal after the television wall server receives the SIP message of the BYE, and the subsequent media daughter card cannot receive the RTP video stream of the terminal.
Since the apparatus described in the second embodiment of the present invention is an apparatus used for implementing the method of the first embodiment of the present invention, based on the method described in the first embodiment of the present invention, a person skilled in the art can understand the specific structure and the deformation of the apparatus, and thus the details are not described herein. All the devices adopted in the method of the first embodiment of the present invention belong to the protection scope of the present invention.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.

Claims (6)

1. An RTP message forwarding method of a television wall server is characterized in that: the method comprises the following steps:
step 1, adding MCU conference terminal information by a television wall server, wherein the conference terminal information comprises a conference terminal number, a terminal IP address and a terminal stream type;
step 2, the video wall server binds the conference terminal information with the appointed HDMI channel of the appointed media daughter card;
step 3, the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
step 4, SDP media description information and media ports of the main stream and the auxiliary stream are interactively sent to corresponding media daughter cards through a network;
step 5, the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder, and sets corresponding relations between the decoder and the media port as well as between the decoder and the HDMI channel;
step 6, after receiving SDP analysis completion response reported by a media daughter card, the television wall server takes the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a conditional configuration message forwarding rule, the conditional configuration message forwarding rule modifies the destination MAC address of the message into the media daughter card MAC address in the rule after matching is completed through matching the source IP address and the destination port of the message, and finally the message is forwarded to the specified media daughter card;
and 7, the video wall server forwards the RTP message to the corresponding media daughter card according to the condition configuration message forwarding rule, then searches the corresponding decoder and HDMI channel through the media port of the RTP message, decodes the RTP message through the decoder, and outputs the RTP message through the HDMI channel for display.
2. The RTP packet forwarding method for the video wall server according to claim 1, wherein: the step 2 is further specifically as follows: the video wall server binds the conference terminal information with the designated HDMI channel of the designated media sub-card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media sub-card, the MAC address of the media sub-card and the HDMI number into a piece of data to be stored in a database and a memory.
3. The RTP packet forwarding method for the video wall server according to claim 1, wherein: and step 8, after receiving the SIP message of BYE, the television wall server deletes the message forwarding rule corresponding to the corresponding terminal, and the subsequent media daughter card cannot receive the RTP video stream of the terminal.
4. An RTP message forwarding device of a television wall server is characterized in that: the method comprises the following steps:
the system comprises an adding module, a video wall server and a video conference system, wherein the video wall server adds MCU conference terminal information, and the conference terminal information comprises a conference terminal number, a terminal IP address and a terminal stream type;
the video wall server binds the conference terminal information with the appointed HDMI channel of the appointed media daughter card;
the television wall server hooks the protocol type from the kernel to be an SIP message; then analyzing the received SIP message, and extracting SDP media description information and media ports of the main stream and the auxiliary stream;
the sending module sends SDP media description information of the main stream and the auxiliary stream and the media port to the corresponding media daughter card through network interaction;
the media daughter card carries out SDP analysis on SDP media description information of the main stream and the auxiliary stream, extracts parameters required by decoding and displaying of an RTP stream, creates a decoder and sets the corresponding relation between the decoder and a media port as well as the HDMI channel;
the rule module is used for taking the extracted media port, the terminal IP address and the media daughter card MAC address bound with the terminal as a conditional configuration message forwarding rule after the video wall server receives an SDP analysis completion response reported by the media daughter card, the conditional configuration message forwarding rule modifies the target MAC address of the message into the media daughter card MAC address in the rule after matching is completed through matching the source IP address and the target port of the message, and finally the message is forwarded to the specified media daughter card;
and the forwarding module is used for forwarding the RTP message to the corresponding media daughter card by the video wall server according to the condition configuration message forwarding rule, searching the corresponding decoder and the HDMI channel through the media port of the RTP message, decoding the RTP message through the decoder, and outputting the RTP message through the HDMI channel for display.
5. The RTP packet forwarding device of the video wall server according to claim 4, wherein: the binding module is further specifically: the video wall server binds the conference terminal information with the designated HDMI channel of the designated media sub-card, and the binding records the conference terminal number, the terminal IP address, the terminal stream type, the number of the media sub-card, the MAC address of the media sub-card and the HDMI number into a piece of data to be stored in a database and a memory.
6. The RTP packet forwarding device of the video wall server according to claim 4, wherein: and the television wall server deletes the message forwarding rule corresponding to the corresponding terminal after receiving the SIP message of the BYE, and the subsequent media daughter card can not receive the RTP video stream of the terminal any more.
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CN104661085A (en) * 2013-11-22 2015-05-27 中兴通讯股份有限公司 Multi-way wireless display method and device
CN109640029A (en) * 2018-11-16 2019-04-16 视联动力信息技术股份有限公司 The method and apparatus that wall is shown on a kind of video flowing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050034079A1 (en) * 2003-08-05 2005-02-10 Duraisamy Gunasekar Method and system for providing conferencing services
CN101938397A (en) * 2009-06-29 2011-01-05 华为技术有限公司 Method for associating RTP (Real-time Transport Protocol) packets in SIP (Session Initiation Protocol) session, device and system thereof
CN102547142A (en) * 2010-12-27 2012-07-04 佛山络威网络技术有限公司 Method for managing and controlling video matrix based on conferences
CN104661085A (en) * 2013-11-22 2015-05-27 中兴通讯股份有限公司 Multi-way wireless display method and device
CN109640029A (en) * 2018-11-16 2019-04-16 视联动力信息技术股份有限公司 The method and apparatus that wall is shown on a kind of video flowing

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