1. A vehicle controller comprising: a rotation driving source structured to generate a driving force of a vehicle; a clutch interposed between the rotation driving source and a driving wheel and structured to generate a transmission torque capacity according to a hydraulic pressure command value; a revolution speed control unit configured to perform a slip control of the clutch and also perform a revolution speed control of the rotation driving source so that a revolution speed at a rotation driving source side of the clutch is higher than a revolution speed at a driving wheel side of the clutch by a predetermined speed; a torque detection unit configured to detect an actual torque of the rotation driving source; a vehicle stop state judgment unit configured to judge a stop state of the vehicle; and a vehicle-stop-time transmission torque capacity correction unit configured to when the vehicle stop state is judged, execute a learning control that learns the hydraulic pressure command value of the clutch that begins to have a transmission torque capacity, and set the hydraulic pressure command value, and set, as an initial hydraulic pressure command value, a hydraulic pressure obtained by adding a predetermined amount to an Nth learning value of a hydraulic pressure command value, set, as an end command value, a hydraulic pressure command value that is a value immediately before the actual torque of the rotation driving source that does not follow a change of a hydraulic pressure command value that is decreased stepwise from the initial hydraulic pressure command value, set, as an (N+1)th learning value of a hydraulic pressure command value, the end command value or a hydraulic pressure command value obtained by adding a predetermined correction amount to the end command value, and after the learning of the hydraulic pressure command value is converged, reduce a frequency of execution of the learning control more than that before the learning is converged, wherein a convergence judgment of the learning of the hydraulic pressure command value is made so that when the number of times of execution of the learning control becomes a predetermined number, the learning is converged.