Makes roll20 video boxes take up all avaliable screen size.

roll20-max-video-size.js

$('#hax').off('.hax').remove();
var $videoSettings = $('<input id="hax" type="range" min="200" max="1000"/>');
$videoSettings.appendTo($('#mysettings .content'));

var inputChange = function() {
    var windowSize = $(this).val(); 
    $('.video').css('min-width', windowSize); 
    $('.video').css('min-height', windowSize * (3/4));
    $('#playerzone.largevideo object, #playerzone.largevideo .OT_root, .OT_widget-container').attr('style', 'width: ' + windowSize + 'px !important; height: ' + windowSize * (3/4) + 'px !important;');
    $('.playername').css('max-width', '100%');
};

$videoSettings.off('.hax').on('change.hax', inputChange);
$videoSettings.off('.hax').on('input.hax', inputChange);