Method, server side and system for computing bandwidth of network transmission of streaming media

A system for UDP-based streaming media network transmission, wherein the system comprises a client and a server for UDP-based streaming media network transmission, and the server establishes network connection with the client;

• wherein the server performs following steps:
• dividing video frame data to be sent into a plurality of sub-video frame data units, and encapsulating each sub-video frame data unit into a sub-video frame packet with a preset serial number;
• sending sub-video frame packets with preset serial numbers to a client, and recording sending start time;
• receiving a response message sent by the client, wherein the response message is generated based on a sub-video frame packet received by the client, and comprises a first serial number corresponding to at least one sub-video frame packet that the client requires a server to send and a second serial number for the received sub-video frame packet;
• extracting the first serial number and the second serial number from the response message, sending a sub-video frame packet corresponding to the first serial number to the client, and determining whether the client has received all sub-video frame packets of the video frame data based on the second serial number;
• if the client has received all sub-video frame packets of the video frame data, recording sending end time of the last sub-video frame packet of the video frame data, and calculating network bandwidth based on the sending start time, the sending end time and the size of the video frame data;
• wherein calculating network bandwidth comprises:
• calculating a sending rate of a network, the sending rate being B/T;
• calculating the sum of sending rates for all video frame data sent within preset unit time, and calculating the average of the sum to obtain the network bandwidth;
• wherein, B is equal to the sum of the size of the video frame data and the sizes of all sub-video frame packets corresponding to the first serial number sent during the sending of the video frame data, and T is equal to the time interval between the sending start time and the sending end time.

A non-transitory storage medium, wherein the storage medium is configured to store an application program that is configured to perform the following steps when being executed:

• dividing video frame data to be sent into a plurality of sub-video frame data units, and encapsulating each sub-video frame data unit into a sub-video frame packet with a preset serial number;
• sending sub-video frame packets with preset serial numbers to a client, and recording sending start time;
• receiving a response message sent by the client, wherein the response message is generated based on a sub-video frame packet received by the client, and comprises a first serial number corresponding to at least one sub-video frame packet that the client requires a server to send and a second serial number for the received sub-video frame packet;
• extracting the first serial number and the second serial number from the response message, sending a sub-video frame packet corresponding to the first serial number to the client, and determining whether the client has received all sub-video frame packets of the video frame data based on the second serial number;
• if the client has received all sub-video frame packets of the video frame data, recording sending end time of the last sub-video frame packet of the video frame data, and calculating network bandwidth based on the sending start time, the sending end time and the size of the video frame data,
• wherein calculating network bandwidth comprises:
• calculating a sending rate of a network, the sending rate being B/T;
• calculating the sum of sending rates for all video frame data sent within preset unit time, and calculating the average of the sum to obtain the network bandwidth;
• wherein, B is equal to the sum of the size of the video frame data and the sizes of all sub-video frame packets corresponding to the first serial number sent during the sending of the video frame data, and T is equal to the time interval between the sending start time and the sending end time.

A computing device, comprising a processor and a memory, wherein

• the memory stores executable program codes;
• the processor executes a program corresponding to the executable program codes stored in the memory by reading the executable program codes, to perform a method for calculating bandwidth of UDP-based streaming media network transmission, wherein the method comprises:
• dividing video frame data to be sent into a plurality of sub-video frame data units, and encapsulating each sub-video frame data unit into a sub-video frame packet with a preset serial number;
• sending sub-video frame packets with preset serial numbers to a client, and recording sending start time;
• receiving a response message sent by the client, wherein the response message is generated based on a sub-video frame packet received by the client, and comprises a first serial number corresponding to at least one sub-video frame packet that the client requires a server to send and a second serial number for the received sub-video frame packet;
• extracting the first serial number and the second serial number from the response message, sending a sub-video frame packet corresponding to the first serial number to the client, and determining whether the client has received all sub-video frame packets of the video frame data based on the second serial number;
• if the client has received all sub-video frame packets of the video frame data, recording sending end time of the last sub-video frame packet of the video frame data, and calculating network bandwidth based on the sending start time, the sending end time and the size of the video frame data;
• wherein calculating network bandwidth comprises:
• calculating a sending rate of a network, the sending rate being B/T;
• calculating the sum of sending rates for all video frame data sent within preset unit time, and calculating the average of the sum to obtain the network bandwidth;
• wherein, B is equal to the sum of the size of the video frame data and the sizes of all sub-video frame packets corresponding to the first serial number sent during the sending of the video frame data, and T is equal to the time interval between the sending start time and the sending end time.