agrathwohl

What else can we do with the Web Audio API?

Of course the Web Audio API is meant for synthesizing and processing audio data. It is tailored for that use case. But at least in our digital world audio data is just a series of numbers, which are typically somewhere between +1 and -1. So why can't we use the Web Audio API for general computations?

Almost a year ago I had the pleasure to give a talk at the Web Audio Conference in Atlanta. The conference featured a lot of great talks, which I really appreciated as an attendee. However, as a speaker it was tough to reduce my own talk until it was short enough to fit into the schedule. I had the feeling that I had to rush through my slides. Since then I planned to write down my findings in a more detailed way, but I never got around to it. Luckily I was asked to repeat my talk at our local Web Audio Meetup here in

agrathwohl

Bento4

Bento4 is a C++ class library and tools designed to read and write ISO-MP4 files. This format is defined in international specifications ISO/IEC 14496-12, 14496-14 and 14496-15. The format is a derivative of the Apple Quicktime file format, so Bento4 can be used to read and write most Quicktime files as well.

Features

agrathwohl

execute pathogen#infect()
syntax on
filetype plugin indent on
colorscheme badwolf
set noswapfile
set number                          " Show number lines
set autoindent
filetype plugin indent on
let t_Co=256
let g:netrw_dirhistmax = 0

agrathwohl

[options]                                                                                                                                                                                      
font = Hack 12                                                                                                                                                                                 
                                                                                                                                                                                               
[colors]                                                                                                                                                                                       
    foreground = #e0dadb                                                                                                                                                                       
    #foreground_bold = #ffffff                                  

agrathwohl

#include </home/agrathwohl/.colors/urban>

! HiDPI
Xft.dpi: 109
Xft.autohint: 1
Xft.displayfilter: lcddefault
Xft.hintstyle: hintslight
Xft.hinting: 1
Xft.antialias: 1
Xft.rgba: rgb

agrathwohl

Moving Image Categorization

This document is intended to serve as an overview of moving image categorization best-practices. These practices are implemented by the Library of Congress, arguably the best-organized media archive on the planet. By following these practices, we enable frictionless relationships with ratings agencies, advertisers, media cataloging groups, metadata databases, etc.

Categories

The LoC has defined three types of labels for moving image genre categorization.

• GENRE - Describes the 'plot' or 'setting' of the video, i.e. #Adventure, #Comedy, or #Romance.
• SUBDIVISION - Another genre term, but applied as the leading subgenre of the video.

agrathwohl

require "pathname"
require "open3"

class CompareVideo
  def initialize(reference, video)
    ref = Pathname.new(File.open("#{reference}", "r"))
    vid = Pathname.new(File.open("#{video}", "r"))
    @comp = [vid, ref]  # Video first, reference file second
  end
  def compare(tech=['psnr','ssim'])

agrathwohl

#!/bin/bash

# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
# BY SACRED DATA MEDIA PARTNERS; WWW.SACREDDATA.IO

# Remove any existing packages:
sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

# Get the dependencies (Ubuntu Server or headless users):
sudo apt-get update

agrathwohl

[fluent_ffmpeg] node ffmpeg.js                                                                                                                             
ffmpeg version N-75369-g5ba811b Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 5.2.0 (GCC)
  configuration: --prefix=/usr --shlibdir=/usr/lib --pkg-config-flags=--static --disable-static --enable-gpl --enable-gnutls --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-shared --enable-x11grab
  libavutil      55.  2.100 / 55.  2.100
  libavcodec     57.  2.100 / 57.  2.100
  libavformat    57.  2.100 / 57.  2.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6.  4.100 /  6.  4.100
  libswscale      4.  0.100 /  4.  0.100

agrathwohl

# FFmpeg / iOS Video Taming

## General Options:

# These settings may be applied to both the INPUT and the OUTPUT
# of the FFmpeg command.

-r 30 # set the frame rate of the video to Apple's recommended 30 fps

-pix_fmt yuv420p # set the output video's pixel format