Mixing video signals for an audio and video multimedia conference call

摘要: In a multimedia communications system ( 100 ) that supports conference calls include an audio portion and video portion, primary image is selected from plurality of images based on amount data generated. The determined by counting number packets or samples in 204 ). A dominant participant if the difference exceeds predetermined threshold 206 If does not exceed ), may be comparing loudness volume for each 207 212 to correspond 208, 214 remains constant period time before possibility change 210, 216