How to play video with steady speed

My codes looks like this…

#include “ofApp.h”

ofVideoPlayer video;

void ofApp::setup() {
video.loadMovie(“fight1.mp4”);
video.play();
}

void ofApp::update(){
video.update();
}

void ofApp::draw(){
video.draw(0,0,1024,768);
}

Whats wrong with this code? it play video but the speed of player always change some times the sound stops and play again the video frames change quickly and sometimes it is delay… I want to make it play with steady speed… any help?

I found the solution… I just need to use newer openframework version… this happend on openframework 8.4