FS-10091: [mod_conference] Conference play file with full-screen=true has side…

FS-10091: [mod_conference] Conference play file with full-screen=true has side effect on member video

src/mod/applications/mod_conference/conference_video.c

@@ -2504,7 +2504,11 @@ void *SWITCH_THREAD_FUNC conference_video_muxing_thread_run(switch_thread_t *thr
 		canvas->video_count = last_video_count = video_count;
 		switch_mutex_unlock(conference->member_mutex);
 
-		switch_core_timer_next(&canvas->timer);
+		if (conference->playing_video_file) {
+			switch_core_timer_sync(&canvas->timer);
+		} else {
+			switch_core_timer_next(&canvas->timer);
+		}
 
 		now = switch_micro_time_now();
 
@@ -3210,7 +3214,7 @@ void *SWITCH_THREAD_FUNC conference_video_muxing_thread_run(switch_thread_t *thr
 			timestamp = canvas->timer.samplecount;
 
 			if (conference->playing_video_file) {
-				if (switch_core_file_read_video(&conference->fnode->fh, &write_frame, SVR_FLUSH) == SWITCH_STATUS_SUCCESS) {
+				if (switch_core_file_read_video(&conference->fnode->fh, &write_frame, SVR_BLOCK) == SWITCH_STATUS_SUCCESS) {
 					switch_img_free(&file_img);
 
 					if (canvas->play_file) {