Vijay vjk2005

dffrnt
Coimbatore, Tamil Nadu
http://dffrnt.com

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vjk2005 / ffmpeg_images_to_movies.sh

Last active March 12, 2017 12:20

Convert a folder of images into an MP4 movie to reduce file size by over 4 times! (added padding so that images are not squished and resized by ffmpeg)

ffmpeg -framerate 50 -pattern_type glob -i '*.png' -vf "pad=1920:1080:0:0" output50fps.mp4

vjk2005 / youtube_video_thumbnail_downloader.sh

Created January 29, 2017 09:34

Download video thumbnails from youtube (without downloading the actual video)

youtube-dl --write-all-thumbnails --skip-download "<VIDEO_URL>"

vjk2005 / library.js

Created December 15, 2016 09:04

Utility functions

	let getKeys = (obj) => Object.keys(obj)
	let isObject = (obj) => obj && typeof obj == 'object' && !obj.length
	let isArray = (arr) => Array.isArray(arr)
	let isEmptyObject = (obj) => isObject(obj) && !Object.keys(obj).length
	let isEmptyArray = (arr) => isArray(arr) && !arr.length
	let isBanned = (val) => bannedKeys.indexOf(val) !== -1

vjk2005 / slideshare-downloader.js

Last active December 4, 2016 19:36

	/*
	Go to any user's presentations page (eg: http://www.slideshare.net/jpatanooga/presentations; does not work on any other pages, insert jquery into the console and then run this script.

	After it runs, copy the console output into a file, say urls.txt, and download all urls inside it on the server (won't work on the client since it needs a fast connection to prevent timeout) using wget -ci urls.txt or wget --show-progress -cqi urls.txt to get a less verbose ouput from wget
	*/

	var downloadBtn1 = async (i, url) => {
	var data = await $.get(url)
	return $(data)
	.find('section.slide img.slide_image')

vjk2005 / mongo_deep_sort.txt

Created October 22, 2016 23:05

Sorting fields nested deep inside arrays using MongoDB’s aggregation framework

	db.getCollection('users').aggregate([
	{$project: {'timeline': 1}},
	{$unwind: '$timeline'},
	{$sort: {'timeline.retweet_count': -1}}
	])

	/*
	expected schema:

	{

vjk2005 / mongo_count_uniques.txt

Created October 22, 2016 22:59

Counting unique fields in MongoDB

	db.getCollection('users').aggregate([
	{$project: {'timeline':1}},
	{$group: {_id: '$timeline.id', count: {$sum:1}}}
	])

vjk2005 / play youtube audio only with mpv

Created August 18, 2016 20:35

mpv link_to_youtube_vid --no-video

vjk2005 / counter.js

Last active June 22, 2016 21:23 — forked from anonymous/counter.js

	/** @jsx React.createElement */
	/* ^ JS bin needs this or it will start complaining */


	/* Redux code to create a counter. Needs a div with ID "app" to start working */
	const counter = (state = 0, action) => {
	switch(action.type) {
	case 'INCREMENT':
	return state + 1

vjk2005 / FilterTweets.js

Created June 10, 2016 13:48

	var users = ['Cow Mask', 'Horse JS']

	$('.context, strong.fullname').each(function(i, authorField) {
	if( $(authorField).text().match(new RegExp(users.join('\|'))) ) $(authorField).closest('li').remove()
	})

vjk2005 / Pinterest downloader.js

Last active June 7, 2016 15:48

	// Put this in the console; need to be logged in. Output will be a list of gifs. If not, change the extension replacer below.
	// 808px is needed for scrolltop to be equal to clientheight even after the page has been scrolled all the way to the bottom

	var ci, images = [];

	ci = setInterval(function() {
	if(document.body.scrollTop >= (document.querySelector('div.App').clientHeight - 808)) {
	console.log('shutting down...')
	clearInterval(ci)

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