Skip to content

Instantly share code, notes, and snippets.

@phanan
Last active May 8, 2024 08:44
Show Gist options
  • Save phanan/e03f75082e6eb114a35c to your computer and use it in GitHub Desktop.
Save phanan/e03f75082e6eb114a35c to your computer and use it in GitHub Desktop.
Record a webpage with PhantomJS and FFMpeg
// Run this from the commandline:
// phantomjs runner.js | ffmpeg -y -c:v png -f image2pipe -r 24 -t 10 -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart output.mp4
var page = require('webpage').create(),
address = 'http://s.codepen.io/phanan/fullembedgrid/YPLewm?type=embed&safe=true&_t=1424767252279',
duration = 3, // duration of the video, in seconds
framerate = 24, // number of frames per second. 24 is a good value.
counter = 0,
width = 500,
height = 500;
page.viewportSize = { width: width, height: height };
page.open(address, function(status) {
if (status !== 'success') {
console.log('Unable to load the address!');
phantom.exit(1);
} else {
window.setTimeout(function () {
page.clipRect = { top: 0, left: 0, width: width, height: height };
window.setInterval(function () {
counter++;
page.render('/dev/stdout', { format: 'png' });
if (counter > duration * framerate) {
phantom.exit();
}
}, 1/framerate);
}, 200);
}
});
@jimkang
Copy link

jimkang commented May 12, 2016

This is awesome. Thanks!

@karthickvkumar
Copy link

hi @phanan thanks for this awesome code, but i got some error while implementing this code.
capture

Thanks in advance

@maddo7
Copy link

maddo7 commented Mar 30, 2017

It starts with 25 fps but drops down to 3fps after several seconds. Is there a way to keep the framerate high? I'd like to stream a webpage and like this it's not possible.

@nghiemvien
Copy link

nghiemvien commented Apr 30, 2017

Can you please update it ? phantomjs render('/dev/stdout'..) print nothing to stdout. Then ffmpeg can't capture it.
I'm using centos

@hendrikreimers
Copy link

Hey, have you tried to render a website in fullhd with web animations (like css3 / jquery) successful?

I've tried it, but the animation is broken complety in the final video. If i'm trying it with just a area and not full-hd it seems to work. But i wanna capture a website in full-hd with animations etc and want to stream it to another machine.

hope anyone can help me with this! thanks a lot!

@Nuptial
Copy link

Nuptial commented Oct 3, 2017

@maddo7 Do you find any solution?

@imrek
Copy link

imrek commented May 29, 2018

It record the initial frame only, not the subsequent ones. What could be the problem?

@xnohat
Copy link

xnohat commented Feb 15, 2020

Should change pipeline to this for cover all screen size (or view port size)

| ffmpeg -y -c:v png -f image2pipe -r 25 -t 10 -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" out.mp4

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment