Video scrubbing seems choppy

@lewislepton wrote:

howdy folks,

im currently working on new tutorials but wanted to go back to video scrubbing. but there is some problems I seem to have compared to what was happening prior [which worked fully well] in the previous one I done 4+ years ago. im also making it better in general & updating things.

all that I am using is an ofParameter & ofxGui that is playing with the setFrame of a video from the ofVideoPlayer. really simple stuff. but currently it seems to be as choppy as a chopper in a chop shop.

it doesn’t smoothly scrub thru the video like before, but instead jumps to certain points, rather than go thru the frames

this is on macOS using latest public Mojave OS

ofApp.h

#include "ofxGui.h"

ofVideoGrabber video;

ofxPanel gui;
ofxParameter<int> scrub>;

ofApp.cpp

void ofApp::setup(){
  video.load("video.mp4");

  gui.setup();
  gui.add(scrub.set("scrub", 0, 0, video.getTotalNumFrames()));
}

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

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

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