Store a single frame from a video into a PImage

Core Library Questions

kalach

Store a single frame from a video into a PImage

in Core Library Questions • 1 year ago

HI, I'm new to Processing and I'm trying to store a single PImage from a Movie but I can't do it

I've been looking but I can't find anyone with the same problem

import processing.video.*;
PImage img;
Movie theMov;
void setup() {
frameRate(30);
size(600, 400,P2D);
theMov = new Movie(this, "Marvels The Avengers- Trailer (OFFICIAL).mp4");
theMov.play();
}
void draw() {
image(img,30,30);
}
void movieEvent( Movie m )
{
theMov.read();
img = m;
}

I don't know why NullPointerException is raised in line 12

Please help :S

Replies(1)

calsign

Re: Store a single frame from a video into a PImage

1 year ago

Likely, the image is still null because movieEvent() hasn't been called yet.
It is probably called at the end of the frame.

Before drawing the image, check to see that it is not null like so:

if(img != null) image(img,30,30);

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Store a single frame from a video into a PImage

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Re: Store a single frame from a video into a PImage

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