added output camera id if it fails

14 years ago · 975ecaca7d
parent 251918e120
commit 975ecaca7d
1 changed files with 1 additions and 1 deletions
--- a/samples/cpp/calibration.cpp
+++ b/samples/cpp/calibration.cpp
@ -414,7 +414,7 @@ int main( int argc, char** argv )
        capture.open(cameraId);

    if( !capture.isOpened() && imageList.empty() )
-        return fprintf( stderr, "Could not initialize video capture\n" ), -2;
+        return fprintf( stderr, "Could not initialize video (%d) capture\n",cameraId ), -2;
    
    if( !imageList.empty() )
        nframes = (int)imageList.size();