Dann Luciano dannluciano

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

Available Public Wildcard DNS Domains pointing to localhost (127.0.0.1)

The best way to safely and securely use local domains pointing to 127.0.0.1 is to edit your local settings (/etc/hosts) and add your own settings. Keep in mind if you want to use subdomains, you need to enter all variations.

Example:

# Adding bottom of your current file /etc/hosts
################# MY LOCAL DOMAINS
127.0.0.1 local.com admin.local.com
127.0.0.1 domain1.com

Using OTP's observer (appmon replacement) remotely

$ ssh remote-host "epmd -names"
epmd: up and running on port 4369 with data:
name some_node at port 58769

Note the running on port for epmd itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:

$ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host

Brazilian TLD Applicants

TLD	Company
.ITAU	Itau Unibanco Holding S.A.
.BRADESCO	Banco Bradesco S.A.
.IPIRANGA	Ipiranga Produtos de Petroleo S.A.
.BOM	Núcleo de Informação e Coordenação do Ponto BR - NIC.br
.FINAL	Núcleo de Informação e Coordenação do Ponto BR - NIC.br
.RIO	Empresa Municipal de Informática SA - IPLANRIO

	#! /bin/bash

	mkdir -p ./backgrounds


	function get_google_device_art {
	local device=$1
	# Get the Google Device backgrounds
	curl "https://developer.android.com/distribute/marketing-tools/device-art-resources/$1/port_back.png" > "./backgrounds/$1_port_back.png"
	curl "https://developer.android.com/distribute/marketing-tools/device-art-resources/$1/port_fore.png" > "./backgrounds/$1_port_fore.png"

	var scrollPosition = sessionStorage.getItem("scrollPosition")
	if(scrollPosition) window.scrollTo(0, scrollPosition)
	document.addEventListener("scroll", function() {
	sessionStorage.setItem("scrollPosition", window.pageYOffset \| document.body.scrollTop)
	})

	import java.util.HashSet;
	import java.util.Set;
	import java.util.stream.IntStream;

	public class HappyNumber {

	public static void main(String[] args) {
	IntStream.range(0, args.length == 0 ? 1001 : Integer.parseInt(args[0]))
	.parallel()
	.filter((number) -> {


	#include <stdio.h>
	#include <stdlib.h>
	int
	main()
	{int h=9,
	d=0,x;while
	(h--){for(x=0;
	x<39;x++){int a=x
	-6;if(a<0)a=-a;printf

	FROM ubuntu:trusty

	# Update the repository
	RUN apt-get update

	# Install necessary tools
	RUN apt-get install -y wget net-tools build-essential git

	# Setup Install Nginx
	RUN wget -q -O - http://nginx.org/keys/nginx_signing.key \| apt-key add -

	// See: https://devforums.apple.com/message/1000934#1000934

	import Foundation

	// Logic

	operator prefix ¬ {}
	@prefix func ¬ (value: Bool) -> Bool {
	return !value
	}