peterforgacs

const { normalize } = require('ffmpeg-normalize');

normalize({
	input: 'input.mp4',
	output: 'output.mp4',
	loudness: {
		normalization: 'ebuR128',
		target: 
		{
			input_i: -23,

peterforgacs

ffmpeg -i input.mp4 -af loudnorm=I=-23:LRA=7:tp=-2:print_format=json -f null -

ffmpeg -i input.mp4 -af
loudnorm=I=-23:LRA=7:tp=-2:measured_I=-30:measured_LRA=1.1:measured_tp=-11 04:measured_thresh=-40.21:offset=-0.47 -ar 48k -y output.mp4

peterforgacs

const { Benchmark } = require("benchmark");
function generateRandomNumberBetween(min, max){
    return Math.floor(Math.random() * max) + min;
}
function generateTupleArray(length) {
    const tupleArray = [];
    for (let i = 0; i < length; i++) {
        tupleArray.push([generateRandomNumberBetween(1, 1e3), generateRandomNumberBetween(1, 1e3)]);
    }
    return tupleArray;

peterforgacs

let arr = [ [1, 2], [3, 4]];
// version 1
arr.reduce((acc, curr) => acc.concat(curr), []);
// version 2
arr.reduce((acc, curr) => [...acc, ...curr], []);
// version 3
[].concat(...arr);

peterforgacs

const { Benchmark } = require("benchmark");
function generateRandomString(length) {
  var result = "";
  var characters =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  var charactersLength = characters.length;
  for (var i = 0; i < length; i++) {
    result += characters.charAt(Math.floor(Math.random() * charactersLength));
  }
  return result;

peterforgacs

// version 1
"hello".split("").reverse();
// version 2
[..."hello"].reverse();
// version 3
Array.from("hello").reverse();

peterforgacs

const { Benchmark } = require("benchmark");
function generateRandomNumberBetween(min, max){
    return Math.floor(Math.random() * max) + min;
}
function generateTupleArray(length) {
    const tupleArray = [];
    for (let i = 0; i < length; i++) {
        tupleArray.push([generateRandomNumberBetween(1, 1e3), generateRandomNumberBetween(1, 1e3)]);
    }
    return tupleArray;

peterforgacs

'use strict';

const util  = require('util');
const fs    = require('fs');
const write = util.promisify(fs.writeFile);

module.exports = ({ image, identifier, directory }) => {
	try {	
  		const extension = image.split(';')[0].match(/jpeg|png|gif/)[0];
		const data      = image.replace(/^data:image\/\w+;base64,/, '');

peterforgacs

Koa

Uses middleware pattern.
Each time we use app.use we add an other middleware function.

ctx - The context contains all the information for a signle request and the response object aswell.

next - Calls the next middleware.

peterforgacs

// Chrome 63
let peerConnectionObject = ... // Some peer connection
peerConnectionObject.getStats(function(res) {
   console.log(res.result());
});