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Matthew Leffler mattleff

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Get/set ID3 meta tags using ffmpeg

A quick guide on how to read/write/modify ID3 metadata tags for audio / media files using ffmpeg.

FFmpeg has a free-form command line option that allows the user to specify key-value-pairs for encoding metadata. Let's take a look.

1. Read ID3 metadata

To list all global metadata tags for a media file, just set an input but no output file.

@lgladdy
lgladdy / gruntfile
Created May 13, 2014 08:07
This is the gruntfile that powers gladdy.co.uk. It's for the blog post here: http://www.gladdy.co.uk/blog/2014/04/13/using-uncss-and-grunt-uncss-with-wordpress/
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
uglify: {
options: {
sourceMap: true,
sourceMapIncludeSources: true,
sourceMapIn: 'js/app.coffee.js.map'
},
//
// Regular Expression for URL validation
//
// Author: Diego Perini
// Updated: 2010/12/05
// License: MIT
//
// Copyright (c) 2010-2013 Diego Perini (http://www.iport.it)
//
// Permission is hereby granted, free of charge, to any person
@brentsimmons
brentsimmons / gist:5810992
Last active January 3, 2021 02:22
Detect a tap on a URL inside a UITextView. Note: the rs_links method isn't included -- you'll need something that takes text and returns an array of detected links. This gist just demonstrates walking through the UITextView characters.
@implementation UITextView (RSExtras)
static BOOL stringCharacterIsAllowedAsPartOfLink(NSString *s) {
/*[s length] is assumed to be 0 or 1. s may be nil.
Totally not a strict check.*/
if (s == nil || [s length] < 1)
return NO;

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

@lunaru
lunaru / css3-arrow-dropshadow.html
Created April 25, 2012 23:18
CSS Box with Arrow and Dropshadow
<!DOCTYPE html>
<html>
<head>
<style>
/* Core CSS */
#box
{
background: white;
@ShirtlessKirk
ShirtlessKirk / luhn.js
Last active May 17, 2024 08:05
Luhn validation algorithm
/**
* Luhn algorithm in JavaScript: validate credit card number supplied as string of numbers
* @author ShirtlessKirk. Copyright (c) 2012.
* @license WTFPL (http://www.wtfpl.net/txt/copying)
*/
var luhnChk = (function (arr) {
return function (ccNum) {
var
len = ccNum.length,
bit = 1,