公开(公告)号：EP3044956A1

公开(公告)日：2016-07-20

申请号：EP14795711.2

申请日：2014-10-15

申请人： Microsoft Corporation

发明人： CARLSSON, Pontus ,  HEMMENDORFF, Magnus ,  HOFBAUER, Konrad ,  NIKIFOROV, Sergei ,  ZHAO, David Yuheng

IPC分类号： H04N7/15 ,  H04N19/59 ,  H04N19/46 ,  H04N19/132 ,  H04N19/164 ,  H04N19/167 ,  H04N19/85

CPC分类号： H04N7/147 ,  H04N7/15 ,  H04N19/132 ,  H04N19/164 ,  H04N19/167 ,  H04N19/46 ,  H04N19/59 ,  H04N19/63 ,  H04N19/85

摘要： A user terminal for participating in video calls comprises: an encoder having a frame size, being the size in pixels at which it encodes frames of video; and a pre-processing stage which supplies a sequence of frames to the encoder at that frame size, each frame comprising at least an image region representing a source video image at a respective moment in time. The pre-processing stage is configured to supply at least some of the frames to the encoder in a modified form, by resizing the source video image to produce the image region of each modified frame with a size smaller than the frame size of the encoder, and combining with a border region such that the modified frame matches the frame size of the encoder. The encoder encodes the frames at the frame size and transmits them to a receiving terminal as part of a live video call.