Yordan Radunchev yradunchev

Recording

Ensure you're recording in 16-bit PCM + 44100Hz.
Do a sound check, record everyone in the room speaking. You want the lighter part of the meter bar (the green or red bar at the top) to bounce between -12db and -6db while people are talking. It's hard to achieve this... so just settle for as close as you can get, without the bars going off the scale :)
Play it back and tweak levels until it sounds good @ 60% speaker volume.
Save the Project BEFORE recording live :D (prevents quality issues)

Edit for Content

Join recordings to one track.
Listen to it + Edit bad content out.
Save this copy to Google Drive, or another backup spot.

Convert audio to video with ffmpeg - examples

avectorscope

ffmpeg -i input.mp3 -filter_complex "[0:a]avectorscope=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a avectorscope.mp4

showcqt

ffmpeg -i input.mp3 -filter_complex "[0:a]showcqt=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a showcqt.mp4

ahistogram

ffmpeg -i input.mp3 -filter_complex "[0:a]ahistogram=s=1920x1080,format=yuv420p[v]" -map "[v]" -map 0:a ahistogram.mp4

GnuPG offline Master key using a YubiKey (for Arch Linux)

Introduction

This guide is a compilation of four other guides. It instructs how to create a set of GnuPG keys which the master key is offline and the actual subkeys only live inside your YubiKey (acting as a smartcard). What ends up in your (online) daily machine are only the stubs of the subkeys.

	#!/bin/bash
	#
	# Watch current directory (recursively) for file changes, and execute
	# a command when a file or directory is created, modified or deleted.
	#
	# Written by: Senko Rasic <senko.rasic@dobarkod.hr>
	#
	# Requires Linux, bash and inotifywait (from inotify-tools package).
	#
	# To avoid executing the command multiple times when a sequence of

	# /etc/ssh/ldap.conf

	# See ldap.conf(5) for details
	# This file should be world readable but not world writable.

	BASE ou=People,dc=example,dc=org
	URI ldap://localhost

	// 1. Go to https://twitter.com/i/likes
	// 2. Keep scrolling to the bottom repeatedly until all your favs are loaded.
	// 3. Run this in your console (open in chrome by View > Developer > JavaScript Console)
	// Notes: this may take a while if you have a lot of favs/likes
	// you can only access your most recent ~2000 likes.
	// inspired by https://gist.github.com/JamieMason/7580315
	$('.ProfileTweet-actionButtonUndo').click()

	# comments example for .dat or .ledger files
	@smallexample
	; This is a single line comment,
	# and this,
	% and this,
	\| and this,
	* and this.

	# If you have a deeply nested tree of accounts,
	# it may be convenient to define an alias, for example:

	ffmpeg -i test.wav -y -loop 1 -i bg.jpg -filter_complex \
	"[0:a]showfreqs=cmode=separate:mode=bar:ascale=cbrt:fscale=log:s=600x600:colors=#ffffff[tmp]; \
	[tmp]alphaextract,format=yuv420p,split=3[box][up][down]; \
	[up]crop=in_w:in_h/2:0:0[up]; \
	[down]crop=in_w:in_h/2:0:in_h/2,vflip[down];[up][down]vstack[tmp]; \
	[tmp]gblur=sigma=10,curves=master='0/0 0.49/0 0.51/1 1/1',format=rgba[tmp]; \
	[box]drawbox=w=600:h=600:c=#ffffff:t=fill:replace=1,format=rgba[box]; \
	[box][tmp]alphamerge[tmp]; \
	[tmp]crop=in_w:in_h/2:0:in_h/4[tmp]; \
	[1:v]scale=1280:-1,crop=in_w:720[bg]; \

	1. Copy/Paste the information below to the clipboard
	2. Open the spreadsheet whose sheets need to be alphabetised
	3. Choose Tools > Script editor > Blank (this opens a new tab in the browser)
	4. Press Control+A followed by Control+V copy and paste the script in
	5. Press Control+S to save the script
	6. Choose Run > sortSheets
	7. Go back to the spreadsheet tab to view the new sorted tab order

	--Copy everything below this line--
	function sortSheets () {

	deb [arch=amd64,i386] http://us.archive.ubuntu.com/ubuntu/ bionic main restricted universe multiverse
	deb [arch=amd64,i386] http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe multiverse
	deb [arch=amd64,i386] http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
	deb [arch=amd64,i386] http://security.ubuntu.com/ubuntu bionic-security main restricted universe multiverse

	deb [arch=arm64,armhf,ppc64el,s390x] http://ports.ubuntu.com/ubuntu-ports/ bionic main restricted universe multiverse
	deb [arch=arm64,armhf,ppc64el,s390x] http://ports.ubuntu.com/ubuntu-ports/ bionic-updates main restricted universe multiverse
	deb [arch=arm64,armhf,ppc64el,s390x] http://ports.ubuntu.com/ubuntu-ports/ bionic-backports main restricted universe multiverse
	deb [arch=arm64,armhf,ppc64el,s390x] http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse