Hi All, I have some questions about pjsua video support. We used H264/YUV by following the instruction on pjsip web site about video support and used the default configuration for iOS app. For some reasons, when "Setting up RX..", pjsua set the size=656x656 for format I420 and when "Setting up TX..", pjsua set the size=352x288 for format I420. 1. First question is in which source code that pjsua/pjmedia sets the size? 2. Would it be possible that I can based on the iphone size or ipad size to set/change the size from configuration or from pjsua API? Log is as below. Any help would be greatly appreciated. Thanks, Beth 02/05 17:49:40.015 Debugwrite15: 17:49:40.012 pjsua_vid.c ......Video channel update.. 02/05 17:49:40.040 Debugwrite15: 17:49:40.038 vstenc0x175130 .......Encoder stream started 02/05 17:49:40.044 Debugwrite15: 17:49:40.041 vstdec0x175130 .......Decoder stream started 02/05 17:49:40.048 Debugwrite15: 17:49:40.046 pjsua_vid.c .......Setting up RX.. 02/05 17:49:40.052 Debugwrite15: 17:49:40.049 pjsua_vid.c ........Creating video window: type=stream, cap_id=-1, rend_id=0 02/05 17:49:40.058 Debugwrite15: 17:49:40.054 vid_port.c .........Opening device OpenGL renderer [OpenGL] for render: format=I420, size=656x656 @22:1 fps 02/05 17:49:40.159 Debugwrite15: 17:49:40.156 ios_opengl_dev .........iOS OpenGL ES renderer successfully created 02/05 17:49:40.162 Debugwrite15: 17:49:40.160 vid_port.c .........Device OpenGL renderer [OpenGL] opened: format=I420, size=656x656 @22:1 fps 02/05 17:49:40.165 Debugwrite15: 17:49:40.163 pjsua_vid.c .........stream window id 0 created for cap_dev=-1 rend_dev=0 02/05 17:49:40.168 Debugwrite15: 17:49:40.166 pjsua_vid.c .........Window 0 created 02/05 17:49:40.172 Debugwrite15: 17:49:40.170 ios_opengl_dev ........Starting ios opengl stream 02/05 17:49:40.176 Debugwrite15: 17:49:40.174 pjsua_vid.c .......Setting up TX.. 02/05 17:49:40.179 Debugwrite15: 17:49:40.177 pjsua_vid.c ........Creating video window: type=preview, cap_id=2, rend_id=0 02/05 17:49:40.183 Debugwrite15: 17:49:40.181 vid_port.c .........Opening device æ­£é<9d>¢ç<9b>¸æ<9c>º [iOS] for capture: format=I420, size=352x288 @15:1 fps 02/05 17:49:40.336 Debugwrite15: 17:49:40.333 vid_util.c .........Orientation converter created: 288x352 to 236x288, maintain aspect ratio=yes 02/05 17:49:40.340 Debugwrite15: 17:49:40.337 vid_port.c .........Device æ­£é<9d>¢ç<9b>¸æ<9c>º [iOS] opened: format=I420, size=352x288 @15:1 fps 02/05 17:49:40.345 Debugwrite15: 17:49:40.342 ios_dev.c .........Native preview initialized 02/05 17:49:40.351 Debugwrite15: 17:49:40.346 pjsua_vid.c .........Preview window id 1 created for cap_dev 2, using built-in preview! 02/05 17:49:40.358 Debugwrite15: 17:49:40.352 pjsua_vid.c .........Window 1 created 02/05 17:49:40.362 Debugwrite15: 17:49:40.360 ios_dev.c ........Starting iOS video stream 02/05 17:49:40.497 Debugwrite15: 17:49:40.494 strm0x16d54c14 !VAD re-enabled 02/05 17:49:40.880 Debugwrite15: 17:49:40.867 pjsua_media.c !......Video updated, stream #1: H264 (sendrecv) 02/05 17:49:40.885 Debugwrite15: 17:49:40.882 pjsua_aud.c .....Conf connect: 1 --> 0