Patent ID: 8917777

Claim:
A method for evaluating video quality, comprising: obtaining information about a transmitted video; resolving the information about the transmitted video to obtain video frame parameters, wherein the video frame parameters comprise a compression distortion parameter and a video quality distortion parameter with packet loss, and at least quantization factor and complexity of video content are used in obtaining the compression distortion parameter, and calculating the video frame quality parameter according to the compression distortion parameter and the video quality distortion parameter with packet loss, wherein the resolving of the information about the transmitted video to obtain the video quality distortion parameter with packet loss comprises: calculating a first video quality distortion parameter and a second video quality distortion parameter according to the information about the transmitted video; and using a sum of the first video quality distortion parameter and the second video quality distortion parameter as the video quality distortion parameter with packet loss, wherein the first video quality distortion parameter represents extent of video frame quality deterioration caused by loss of data in a video frame, and the second video quality distortion parameter represents extent of video frame quality deterioration caused by propagation of errors; wherein the calculating of the first video quality distortion parameter according to the information about the transmitted video comprises: obtaining the number of valid packets in the video frame and the number of all packets; obtaining difference between the number of all packets and the number of valid packets, and dividing the difference by the number of all packets to obtain a percentage of invalid packets in the video frame; and multiplying the percentage by a distortion parameter existent when the video frame is lost to obtain a product, and using the product as the first video quality distortion parameter.