Arman Harutyunyan arman-h

FFmpeg and libav's playbook: Advanced encoding options with hardware-based acceleration, NVIDIA's NVENC and Intel's VAAPI-based encoder.

Hello guys,

Continuing from this guide to building ffmpeg and libav with NVENC and VAAPI enabled, this snippet will cover advanced options that you can use with ffmpeg and libav on both NVENC and VAAPI hardware-based encoders.

For ffmpeg:

Command Line Text to PDF Tools

pdftotext

Documentation: http://www.foolabs.com/xpdf/download.html

Mac install

brew install poppler

Basic Run Command

pdftotext document.pdf text_file.txt

TL;DR

Install Postgres 9.5, and then:

sudo pg_dropcluster 9.6 main --stop
sudo pg_upgradecluster 9.5 main
sudo pg_dropcluster 9.5 main

OAUTH2

The Problem

I’m a web app that wants to allow other web apps access to my users’ information, but I want to ensure that the user says it’s ok.

The Solution

I can’t trust the other web apps, so I must interact with my users directly. I’ll let them know that the other app is trying to get their info, and ask whether they want to grant that permission. Oauth defines a way to initiate that permission verification from the other app’s site so that the user experience is smooth. If the user grants permission, I issue an AuthToken to the other app which it can use to make requests for that user's info.

Note on encryption

Oauth2 has nothing to do with encryption -- it relies upon SSL to keep things (like the client app’s shared_secret) secure.

	// components/ResourceableControls.jsx
	import useResourceableStore from '@/stores/resourceableStore'

	/**
	* This renders the Edit/Save/Cancel buttons.
	* It's generic and works with any resource type.
	*/
	export default function ResourceableControls({
	resource, // The resource being edited
	resourceType, // Type of resource ('user', 'case', etc)

	# db/migrate/20190101000000_create_users.rb

	class CreateUsers < ActiveRecord::Migration[5.2]
	def change
	create_table :users do \|t\|
	t.string :api_key, index: true
	t.timestamps
	end
	end
	end

	def recursively_flatten_an_array(nested_array, flattened_array = [])
	nested_array.each do \|obj\|
	unless obj.is_a? Array
	flattened_array << obj
	else
	recursively_flatten_an_array(obj, flattened_array)
	end
	end

	return flattened_array

	source 'http://rubygems.org'
	gem 'rack'
	gem 'rack-flash'
	gem 'thin'
	gem 'sinatra', :require => 'sinatra/base'
	gem 'mongoid'
	gem 'bson_ext'
	gem 'slim'

	source :rubygems
	gem 'thin'
	gem 'slim'
	gem 'sass'
	gem 'sinatra'
	gem 'sprockets'
	gem 'sinatra-partial'
	gem 'coffee-script'
	gem 'therubyracer'

	# db/migrate/20130516013336_create_fetchers.rb

	# Table to store fetched/unfetched files.
	class CreateFetchers < ActiveRecord::Migration
	def change
	create_table :fetchers do \|t\|
	t.string :url
	t.binary :file
	t.string :status