Hi, The change set for #1861 <https://trac.pjsip.org/repos/ticket/1861> on Android does not work well. Testing on org.pjsip.pjsua2.app get could not get the "proper" orientation result, i.e: head upside whatever the device orientation is. The culprit should be the I420Rotate() invoked by pjmedia_vid_dev_conv_resize_and_rotate() in pjmedia/src/pjmedia-videodev/util.c <https://trac.pjsip.org/repos/browser/pjproject/trunk/pjmedia/src/pjmedia-videodev/util.c?rev=5118>. The libyuv document <https://chromium.googlesource.com/libyuv/libyuv/+/master/docs/rotation.md#I420Rotate>says "Rotate by 180 can be done in place, but 90 and 270 can not." In addition, change set # <https://trac.pjsip.org/repos/changeset/5118> 5138 <https://trac.pjsip.org/repos/changeset/5138#file1>introduces a convert for the stream. Another convert, however, was created for pjmedia_vid_port and is dependent on the source video size too. An alternative solution is to publish a PJMEDIA_EVENT_FMT_CHANGED event on PJMEDIA_DIR_ENCODING and finally invoke client_port_event_cb() in vid_port.c, and the client_port_event_cb() should be amended to NOT overwrite the destination size on PJMEDIA_DIR_ENCODING. The stream convert is not required. Is there any problem or potential risk on this solution? -- Deng Xiaoming dengxiaoming@gmail.com