derpeter’s gists

derpeter / ledstream_fastled.ino

Created January 26, 2016 18:00

	# Modified adalight arduino version which uses the FastLED ( http://fastled.io/ ) library.
	# I found this code at https://forums.adafruit.com/viewtopic.php?f=47&t=59464#p301431 .
	# For me it works much more smooth then the original code using SPI.h .
	# It works pretty well with Colorswirl boblight and hyperion

	#include "FastLED.h"
	#include <hsv2rgb.h>
	#include <platforms.h>
	#include <fastspi_types.h>
	#include <colorpalettes.h>

derpeter / adalight-fastlight.ino

Created January 26, 2016 18:48

	// Uses Adalight protocol and is compatible with Boblight, Prismatik etc
	// "Magic Word" for synchronisation is 'Ada' followed by LED High, Low and Checksum
	// source http://thai-fighter.blogspot.de/2014/05/arduino-adalight-clone-with-any-led.html
	//
	#include <FastLED.h>

	///// User definitions /////

	// Define the number of LED Controllers
	#define NUM_LEDS 30

derpeter / encode files in folder with ffmpeg

Created June 8, 2016 12:27

	for i in "*.m4a"; do echo ffmpeg -i $i -ab 192k "$(basename -s .m4a $i).mp3"; done

	or

	for i in *.m4a; do out=`echo $i \| cut -d '.' -f1`; ffmpeg -i $i -ab 192k $out.mp3; done

derpeter / gist:bb4f37367f2e32cf14911189631bb657

Created September 28, 2016 15:47

derpeter / media-dl.sh

Last active December 22, 2017 11:54

Download a conference from media.ccc.de

	#!/bin/sh
	curl https://media.ccc.de/c/gpn17/podcast/mp4.xml \| awk -F '"' '/url="/{print $2}' \| wget -c -i -

derpeter / pi cam in script from IRC david

Created July 10, 2017 14:10

	#!/usr/bin/python3
	import sys
	import time
	import threading
	import os
	import stat
	import gi
	gi.require_version('Gst', '1.0')
	gi.require_version('GstNet', '1.0')
	from gi.repository import Gst, GstNet

derpeter / gist:306452b1b6a8c569690a43de49145d8b

Last active October 22, 2017 09:41

reencode unsupported audio codec to a second audio track

ffmpeg -y -i in.mkv -map 0:v -c:v copy -map 0:a:0 -c:a:0 copy -map 0:a:0 -c:a:0 ac3 out.mkv

derpeter / reencode.sh

Created October 14, 2017 01:50

reencode all video files in an folder that a bigger than a configured value to save disk space

	#!/bin/bash
	MIN_SIZE=6G
	IN_DIR=.
	OUT_DIR=out

	find $IN_DIR -maxdepth 1 -type f -size +$MIN_SIZE -exec ffmpeg -y -i {} -c:v libx264 -preset slow -tune film -profile:v high -level 4.2 -crf 23 -c:a copy -c:s copy $OUT_DIR/{} \;

derpeter / compare.sh

Created October 15, 2017 12:21

compare the size of files with the same filename in two directorys

derpeter / Raspberry Pi3 arm64 with kvm

Created March 28, 2018 11:35

	This can be used as a starting point for developing your own image e.g. for running MirageOS on an Pi3

	You will need an arm64 / aarch64 cross compiler. You can use e.g. the cross compiler shipped by Ubuntu or get the toolchain of your choice for your OS.

	apt-get install gcc-aarch64-linux-gnu

	Now we setup the SD card. We need to create two partitions like shown below

	Device Boot Start End Sectors Size Id Type
	2018-03-13-raspbian-stretch-lite.img1 8192 93802 85611 41,8M c W95 FAT32 (LBA)

derpeter derpeter