Matt Loberg mloberg

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Set Up

You will need Sija's version of the garb gem, so add this line to your Gemfile (you will need git installed for this):

gem 'garb', :git => 'git://github.com/Sija/garb.git'

Then run the gem bundler: bundle install

Set your google username

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

	package main

	import (
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"reflect"
	"regexp"
	"strings"

	/**
	* Constructor
	#if (${PARAM_DOC} != "") *
	#else#end
	${PARAM_DOC}
	*/
	public function __construct(${PARAM_LIST}) {${BODY}}

	from sqlalchemy import engine
	from sqlalchemy import event

	class DbStats():
	def __init__(self):
	self.clear()

	def clear(self):
	self.total_queries = 0
	self.total_time = 0

	import vcrutils

	VCR_CASSETTE_PATH = APPROOT + '/venmo_tests/cassettes/' # eg
	MAKE_EXTERNAL_REQUESTS = os.environ.get('MAKE_EXTERNAL_REQUESTS') == 'TRUE'


	@dual_decorator # convert a paramaterized decorator for no-arg use (https://gist.github.com/simon-weber/9956622).
	def external_call(args, *kwargs):
	"""Enable vcrpy to store/mock http requests.

	#!/usr/bin/python

	'''
	Python implementation of passcode hashing algorithm used on the Samsung Galaxy S4 GT-I9505 4.2.2
	Correct PIN for hash and salt below is 1234.

	Get 40-character hash value in ascii hex format from file /data/system/password.key on the phone

	Get salt in signed numeric format by doing sqlite3 query SELECT value FROM locksettings WHERE name = 'lockscreen.password_salt' on /data/system/locksettings.db

	# useful for running ssl server on localhost
	# which in turn is useful for working with WebSocket Secure (wss)

	# copied from http://www.piware.de/2011/01/creating-an-https-server-in-python/

	source :rubygems

	gem 'shotgun', :group=>:development

	gem 'rack-cache'
	gem 'sinatra', :require => 'sinatra/base'
	gem 'sinatra-support'

	gem 'haml'