diff --git a/source/InputStream.cpp b/source/InputStream.cpp
index 818855b..b41200e 100755
--- a/source/InputStream.cpp
+++ b/source/InputStream.cpp
@@ -149,7 +149,7 @@ Void InputStream::init( QString filename, UInt width, UInt height, Int input_for
 
   UInt64 frame_bytes_input = m_cCurrFrame->getBytesPerFrame();
 
-  if( avStatus )
+  if( !avStatus )
   {
     m_cFilename = filename;
     m_pFile = fopen( m_cFilename.toLocal8Bit().data(), "rb" );