humble-video-noarch/src/main/java/io/humble/video/Rational.java
public Rational subtract(Rational arg) {
    long cPtr = VideoJNI.Rational_subtract(swigCPtr, this, Rational.getCPtr(arg), arg);
    return (cPtr == 0) ? null : new Rational(cPtr, false);
  }
public Rational subtract(Rational arg) {
    long cPtr = VideoJNI.Rational_subtract(swigCPtr, this, Rational.getCPtr(arg), arg);
    return (cPtr == 0) ? null : new Rational(cPtr, false);
  }
Subtracts arg from this rational<br>
@param arg The amount to subtract from this.<br>
@return this-arg.