tsmx-dev tsmx

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

Review and Change Remote URL

git remote -v
# View existing remotes

git remote set-url origin https://github.com/user/repo2.git
# Change the 'origin' remote's URL

git remote -v

Encrypting text fields in Mongoose is easy using Node's built-in crypto module. You might want to do this if you're using MongoDB as a service (see the recent MongoHQ security breach); or, if you're storing OAuth tokens that could, in the wrong hands, screw with somebody's account on a 3rd party service. (Of course, you should never encrypt passwords: those should be hashed.)

Imagine you have a Mongoose model like that shown below, which is modified only slighly from the example on the MongooseJS homepage.

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');

var User = mongoose.model('User', {
 name: String,

	function isOdd(x) {
	return new Promise((resolve, reject) => {
	if (x == 11) throw new Error('11 is not allowed!');
	if (x % 2) {
	resolve(x.toString() + ' is odd')
	}
	else {
	reject(new Error(x.toString() + ' is even'));
	}
	});

	const got = require('got');
	const stream = require('stream');
	const fs = require('fs');
	const { promisify } = require('util');
	const pipeline = promisify(stream.pipeline);

	// instantiate the download stream - use options to set authorization header etc. if needed
	let downStream = got.stream('https://example.com/download');

	downStream.on('response', response => {

	const got = require('got');

	// get 'url' and 'token'...

	got.get(url), {
	responseType: 'json',
	hooks: {
	beforeRequest: [
	options => {
	options.headers['Authorization'] = 'Bearer ' + token;