Video quality assessment method and device

A video quality assessment method, comprising:

• obtaining a to-be-assessed video, wherein the to-be-assessed video comprises a forward error correction (FEC) redundancy data packet;
• obtaining an FEC source block size and the one or more FEC redundancy data packets from a multimedia relay function (MRF) system, or from a receiving device of the to-be-assessed video or by parsing FEC redundancy data packets of a first source block;
• when a quantity of lost data packets of the first source block in the to-be-assessed video is 0, or the quantity of lost data packets of the first source block is greater than a quantity of FEC redundancy data packets of the first source block, generating a first summary packet for one or more non-lost data packets of the first source block, and generating a second summary packet for a lost data packet of the first source block based on the one or more non-lost data packets, a Real-Time Transport Protocol (RTP) sequence number and a payload size of the lost data packet obtained by multiplying the quantity of lost data packets and the payload size of the lost data packets,
• wherein the quantity of lost data packet of the first source block is calculated based on a start RTP sequence number, an end RTP sequence number, and the RTP sequence number of the non-lost data packet of the first source block,
• wherein a total quantity of RTP data packets in the first source block is determined based on the start RTP sequence number and the end RTP sequence number, and
• wherein the quantity of lost data packets of the first source block is calculated based on the total quantity of RTP data packets in the first source block excluding the quantity of non-lost data packet of the first source block;
• and
• calculating a first score of video of the to-be-assessed video based on the first summary packet.

A video quality assessment device comprising:

• a processor;
• and
• a non-transitory computer readable medium which contains computer-executable instructions;
• the processor is configured to execute the computer-executable instructions to enable the video quality assessment device to perform operations comprising:
• obtaining a to-be-assessed video, wherein the to-be-assessed video comprises one or more forward error correction (FEC) redundancy data packets;
• obtaining an FEC source block size and the one or more FEC redundancy data packets from a multimedia relay function (MRF) system, or from a receiving device of the to-be-assessed video or by parsing FEC redundancy data packets of a first source block;
• when a quantity of lost data packets of the first source block in the to-be-assessed video is less than or equal to a quantity of FEC redundancy data packets of the first source block, generating a first summary packet for one or more non-lost data packets of the first source block, and generating a second summary packet for a lost data packet of the first source block based on the one or more non-lost data packets, a Real-Time Transport Protocol (RTP) sequence number and a payload size of the lost data packet obtained by multiplying the quantity of lost data packets and the payload size of the lost data packets,
• wherein the quantity of lost data packet of the first source block is calculated based on a start RTP sequence number, an end RTP sequence number, and the RTP sequence number of the non-lost data packet of the first source block,
• wherein a total quantity of RTP data packets in the first source block is determined based on the start RTP sequence number and the end RTP sequence number, and
• wherein the quantity of lost data packets of the first source block is calculated based on the total quantity of RTP data packets in the first source block excluding the quantity of non-lost data packet of the first source block;
• and
• calculating a first score of video of the to-be-assessed video based on the first summary packet and the second summary packet.