FS-7744 amend

src/mod/applications/mod_conference/mod_conference.c

@@ -4949,6 +4949,9 @@ static void conference_write_video_frame(conference_obj_t *conference, conferenc
 				(switch_test_flag(conference, CFLAG_VID_FLOOR_LOCK) ||
 				 !(imember->id == imember->conference->video_floor_holder && imember->conference->last_video_floor_holder))) {
 
+				if (vid_frame->img) {
+					switch_core_session_write_video_frame(imember->session, vid_frame, SWITCH_IO_FLAG_NONE, 0);
+				} else {
 					switch_assert(vid_frame->packetlen <= SWITCH_RTP_MAX_BUF_LEN);
 					tmp_frame = *vid_frame;
 					tmp_frame.packet = buf;
@@ -4959,6 +4962,7 @@ static void conference_write_video_frame(conference_obj_t *conference, conferenc
 					switch_core_session_write_video_frame(imember->session, &tmp_frame, SWITCH_IO_FLAG_NONE, 0);
 				}
 			}
+		}
 		
 		switch_core_session_rwunlock(isession);
 	}