There is a bug in pjsua_vid.c at function call_change_cap_dev After creating a new preview window instead of checking new window's renderer port, old window is checked. At line 1904 the line if (w->wp_rend) { should be replaced with if (new_w->wp_rend) { Best regards, Michael Mikhlin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20140602/d4ebaf6d/attachment.html>