Patent ID: 8320747

Claim:
A video quality estimation method used by a video quality estimation apparatus including an arithmetic processing unit and a storage unit to estimate, based on TS packets, video quality of video communication which converts an elementary stream into TS packets and transmits the TS packets, the elementary stream being obtained by compression-coding a video signal into a plurality of kinds of frames, comprising: a storage step of causing the storage unit to store a frame structure of the elementary stream; a frame type determination step of causing the arithmetic processing unit to count, as a frame data amount of each frame, the number of TS packets included in the frame based on a frame start position included in an input TS packet of the video communication, and determine a frame type based on a large/small relationships between the frame data amounts of the frames; and a video quality estimation step of causing the arithmetic processing unit to estimate the video quality of the video communication based on the frame type of each frame obtained in the frame type determination step, the frame structure of the elementary stream read out from the storage unit, and a TS packet loss state detected from the TS packets of the video communication.