diff --git a/checkdumpfile.cc b/checkdumpfile.cc
index 212ff90..6dbf62e 100644
--- a/checkdumpfile.cc
+++ b/checkdumpfile.cc
@@ -2,6 +2,10 @@
  * tool to check and gain some basic information about videodum-files
  */
 
+/* enable files > 2GB on 32 bit systems */
+#define _LARGEFILE64_SOURCE 1
+#define _FILE_OFFSET_BITS 64
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/debayer.cc b/debayer.cc
index 7c65f5d..87f8550 100644
--- a/debayer.cc
+++ b/debayer.cc
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include <stdint.h>
 
 /*
@@ -63,7 +64,9 @@ void debayer_grbg16_simple (uint16_t * src, int src_w, int src_h,
 #define UPRI (*(src-src_w+1))
 #define DNLE (*(src+src_w-1))
 #define DNRI (*(src+src_w+1))
-#define STORE *(dst++) = (r>>8)&0xff; *(dst++) = (g>>8)&0xff; *(dst++) = (b>>8) & 0xff; src++;
+
+#define BITCONV(d) ((d>>8) & 0xff)
+#define STORE *(dst++) = BITCONV(r); *(dst++) = BITCONV(g); *(dst++) = BITCONV(b); src++;
 
 
 /*
diff --git a/dng.cc b/dng.cc
index dff5385..2f22cc5 100644
--- a/dng.cc
+++ b/dng.cc
@@ -3,6 +3,7 @@
  */
 
 #include <stdint.h>
+#include <stdlib.h>
 #include <time.h>
 #include <tiffio.h>
 #include "dng.h"
@@ -122,7 +123,8 @@ int DNG::writeFile(void * data) {
   time_t abs_ts;
   struct tm tm;
   char timestamp[64];
-  
+
+  /* get time stamp */
   time (&abs_ts);
   gmtime_r (&abs_ts, &tm);
   sprintf(timestamp, "%04d:%02d:%02d %02d:%02d:%02d",
@@ -147,11 +149,13 @@ int DNG::writeFile(void * data) {
   TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
   TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, SamplesPerPixel);
   TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
-  
-  if(ColorID == DNG_COLORID_RAW8 || ColorID == DNG_COLORID_RAW8) {
+
+  if(ColorID == DNG_COLORID_RAW8 || ColorID == DNG_COLORID_RAW16) {
     static const short CFARepeatPattern[] = { 2,2 }; // 2x2 CFA
     TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_CFA);
     TIFFSetField(tif, TIFFTAG_CFAREPEATPATTERNDIM, CFARepeatPattern);
+    TIFFSetField(tif, TIFFTAG_CFALAYOUT, 1);
+    TIFFSetField(tif, TIFFTAG_CFAPLANECOLOR, 3, "\000\001\002");  // RGB
     // 0 = Red, 1 = Green, 2 = Blue
     TIFFSetField(tif, TIFFTAG_CFAPATTERN, "\001\000\002\001"); // GRBG
   }
diff --git a/ser.cc b/ser.cc
index 76e1217..70dab1c 100644
--- a/ser.cc
+++ b/ser.cc
@@ -21,7 +21,7 @@ SER::SER() {
   memcpy(header.FileID, "LUCAM-RECORDER", strlen("LUCAM-RECORDER"));
   header.LuID = 0;
   header.ColorID = SER_COLORID_RGB;
-  header.LittleEndian = 1;
+  header.LittleEndian = 0;  // opposite meaning of the specification
   header.ImageWidth = 0;
   header.ImageHeight = 0;
   header.PixelDepthPerPlane = 8;
@@ -234,7 +234,7 @@ int SER::appendFrame(void *data) {
     fprintf(stderr, "Error: appending frame, SER file not yet specified\n");
     return -1;
   }
-  
+
   /* write frame data */
   if(fwrite(data, FrameSize, 1, FileDesc) != 1) {
     fprintf(stderr, "Error: failed write SER frame (%s)\n", strerror(errno));
@@ -243,7 +243,8 @@ int SER::appendFrame(void *data) {
 
   /* ensure we have enough memory allocated for timestamps */
   if(FramePointer >= NumberOfTimeStamps) {
-    NumberOfTimeStamps *= 2;
+    while(FramePointer >= NumberOfTimeStamps)
+      NumberOfTimeStamps *= 2;
     if((TimeStamps = (int64_t *)realloc(TimeStamps, sizeof(header.DateTime) * NumberOfTimeStamps)) == NULL) { 
       fprintf(stderr, "Error: failed to re-allocate %lu bytes for timestamps\n",
 	      sizeof(header.DateTime) * (long)NumberOfTimeStamps);