Render Css3 Animation As A Sequence Of Image Files With Phantomjs

I didn't work with PhantomJS before, but want to use it to render some custom-made CSS3 animated sequences to sets of PNG files on server side to join them into a single video file

Solution 1:

You could have phantomjs take a snapshot every few hundred milliseconds and base your css3 animations around that.

An example script (snap.js) for this would be:

var system = require('system');
var page = newWebPage();

var address = system.args[1];
var wait = parseInt(system.args[2]);
var iterations = parseInt(system.args[3]);

page.open(address, function(){
    (functionsnap(i){
        if(i < iterations){
            window.setTimeout(function(){
                page.render('capture/'+i+'.png');
                snap(++i);
            }, wait);
        }
        else{
            phantom.exit();
        }
    })(0);
});

You would use phantomjs to call the script like this:

./phantomjs snap.js http://google.com 500 5

and it would take a snapshot of the google homepage every half a second, 5 times.

Then if you paused your animation every half a second phantomjs would capture those points.