diff --git a/lib/mp4_generic.cpp b/lib/mp4_generic.cpp
index 981893ee..f6808851 100644
--- a/lib/mp4_generic.cpp
+++ b/lib/mp4_generic.cpp
@@ -3021,6 +3021,7 @@ namespace MP4 {
     setFrameCount(1);
     setCompressorName("");
     setDepth(0x0018);
+    setInt16(0xFFFF, 76);//must be -1
   }
 
   void VisualSampleEntry::setCodec(const char * newCodec) {
diff --git a/src/output/output_progressive_mp4.cpp b/src/output/output_progressive_mp4.cpp
index c80cf0ba..0ebd5525 100644
--- a/src/output/output_progressive_mp4.cpp
+++ b/src/output/output_progressive_mp4.cpp
@@ -499,8 +499,8 @@ namespace Mist {
           }
           break;
         }
-        if (byteEnd > size - 1) {
-          byteEnd = size - 1;
+        if (byteEnd > size) {
+          byteEnd = size;
         }
       } else {
         byteEnd = size;
diff --git a/src/sourcery.cpp b/src/sourcery.cpp
index ca6d966e..b314fefd 100644
--- a/src/sourcery.cpp
+++ b/src/sourcery.cpp
@@ -7,6 +7,7 @@
 int main(int argc, char* argv[]){
   if (argc < 4) {
     std::cerr << "Usage: " << argv[0] << " <inputFile> <variableName> <outputFile>" << std::endl;
+    return 1;
   }
   std::ofstream tmp(argv[3]);
   //begin the first line