diff --git a/videodev-svbcam.cc b/videodev-svbcam.cc
index bc60f69..40f63ee 100644
--- a/videodev-svbcam.cc
+++ b/videodev-svbcam.cc
@@ -333,9 +333,12 @@ int VideoDev_SVBCam::Grab(VideoFrameRaw *vf) {
 	if ((err = SVBGetVideoData(camid, inframe, (long)inframe_size, 50)) != SVB_SUCCESS) {
 		if (err != SVB_ERROR_TIMEOUT) {
 			print_error(err);
-			UnLockMutex();
+			// UnLockMutex();   <-- Warum?
 			return VDEV_STATUS_ERROR;
 		}
+		else {
+			return VDEV_STATUS_AGAIN;
+		}
 	}
 	LockMutex();
 	vf->CopyFrom(inframe_pixfmt, inframe_w, inframe_h, inframe_size, inframe);
diff --git a/videodev.cc b/videodev.cc
index 1988abe..50e9b8d 100644
--- a/videodev.cc
+++ b/videodev.cc
@@ -140,6 +140,7 @@ void VideoDev::SetConfig(std::string dev, int w, int h, std::string format, std:
 #define CYCLETIME 0.050
 void VideoDev::ThreadProcess() {
 	struct timeval cycle_timestamp;
+	int numframes = 0;
 	int lastsec = 0;
 	float cycle_time = 0.0;
 	float cycle_wait = 0.0;
@@ -178,6 +179,7 @@ void VideoDev::ThreadProcess() {
 		Convert(&cdata, &threaddata.vf, threaddata.vfr.data, threaddata.vfr.size, threaddata.vfr.pixfmt, threaddata.vfr.w, threaddata.vfr.h);
 		switch (i) {
 		case VDEV_STATUS_OK:
+			numframes++;
 			if (callback) gdk_threads_add_idle(callback, &threaddata);
 			break;
 
@@ -193,8 +195,9 @@ void VideoDev::ThreadProcess() {
 		cycle_time = get_cycletime(&cycle_timestamp);
 		cycle_wait = (CYCLETIME - cycle_time) + cycle_wait;
 		if (lastsec != cycle_timestamp.tv_sec) {
-			printf ("%s:%d %s   cycle_time:%f              Freq:%f Hz                    \r", __FILE__, __LINE__, __FUNCTION__, cycle_time, (1.0/cycle_time));
+			printf ("%s:%d %s   Loop: cycle_time:%f      Freq:%f Hz      Frames:%d                  \r", __FILE__, __LINE__, __FUNCTION__, cycle_time, (1.0/cycle_time), numframes);
 			lastsec = cycle_timestamp.tv_sec;
+			numframes = 0;
 		}
 		if (cycle_wait > 0.0 && cycle_wait < 1.0 ) usleep ((int)(cycle_wait * 1000000.0));
 	}