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FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.
Let's start with some basics:
ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file
| #!/bin/bash | |
| # 1. Save file to system /usr/bin | |
| # 2. Make it executable | |
| # 3. Add crontab entry: | |
| # sudo su | |
| # crontab -e | |
| # Add `* * * * * /usr/bin/wg-watchdog` | |
| # | |
| # You can track history via `journalctl -f -t wg-watchdog` |
| <html> | |
| <head> | |
| <style> | |
| h1 { | |
| font-family: Calibri; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>Hello World!</h1> |
| const chainablePropType = predicate => { | |
| const propType = (props, propName, componentName) => { | |
| // don't do any validation if empty | |
| if (props[propName] == null) { | |
| return; | |
| } | |
| return predicate(props, propName, componentName); | |
| } |
| import React, { Component } from 'react' | |
| const MOBILE_MAX = 480 | |
| const TABLET_MAX = 1024 | |
| export const mobile = window.matchMedia(`(max-width: ${MOBILE_MAX}px)`) | |
| export const isMobile = () => mobile.matches | |
| export const tablet = window.matchMedia(`(min-width: ${MOBILE_MAX + 1}px) and (max-width: ${TABLET_MAX}px)`) | |
| export const isTablet = () => tablet.matches |
| require 'torquebox-messaging' | |
| require_relative '../models/subscriber' | |
| module Box | |
| module Services | |
| class SubscriberActivation | |
| DELAY = 60 * 60 * 24 * 1000 | |
| def self.logger |
| defmodule Exercise1 do | |
| def maximum([head | tail]) do | |
| maximum(tail, head) | |
| end | |
| defp maximum([], largest_score) do | |
| largest_score | |
| end | |
| defp maximum([head | tail], largest_score) when largest_score > head do |
| // Based on https://github.com/stewartlord/identicon.js | |
| import React from 'react'; | |
| import md5 from 'md5'; | |
| class Identicon extends React.Component { | |
| static propTypes = { | |
| id: React.PropTypes.string.isRequired, | |
| background: React.PropTypes.string, | |
| padding: React.PropTypes.number, |
| def conditional_css(*elements) | |
| elements.map do |element| | |
| if element.kind_of?(Hash) | |
| element.select { |k, v| v }.keys | |
| else | |
| element.to_s | |
| end | |
| end.compact.join(' ') | |
| end |