Allow negative MP4 rotations

drewnoakes · Apr 16, 2021 · bd41996 · bd41996
1 parent 8430a31
commit bd41996
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/MetadataExtractor/Formats/QuickTime/QuickTimeMetadataReader.cs b/MetadataExtractor/Formats/QuickTime/QuickTimeMetadataReader.cs
@@ -89,11 +89,11 @@ static void SetRotation(QuickTimeTrackHeaderDirectory directory)
                     var x = matrix[1] + matrix[4];
                     var y = matrix[0] + matrix[3];
                     var theta = Math.Atan2(x, y);
-                    var degree = ((180 / Math.PI) * theta) - 45;
-                    if (degree < 0)
-                        degree += 360;
+                    var degree = RadiansToDegrees(theta) - 45;
 
                     directory.Set(QuickTimeTrackHeaderDirectory.TagRotation, degree);
+
+                    static double RadiansToDegrees(double radians) => (180 / Math.PI) * radians;
                 }
             }