thielemans

thielemans / gist:4246df73d159985b16f0e87c72e2f332

Created May 31, 2019 09:37

Contiki setup on a new linux (virtual) machine

	1. Installation
	a. Install & update Linux
	b. Optional: Install virtualbox guest additions
	c. If using a minimal install, install common developer tools like java, git, etc…
	i. sudo apt install openjdk-8-jdk git python build-essential
	ii. Optional: Install Eclipse IDE for C/C++ Developers

	2. Download Contiki from git
	a. git clone https://github.com/contiki-os/contiki.git
	b. git submodule update --init --recursive

thielemans / ffmpeg-audioconvert

Last active November 1, 2024 01:29

Add a 5.1 DTS or AC3 audio stream from a 7.1 DTS-HD stream using ffmpeg to allow directplay

	#Downconvert 7.1 DTS-HD to DTS 5.1:
	ffmpeg -i in.mkv -strict -2 -map 0:a:0 -c dts -af "channelmap=channel_layout=5.1" dts.mkv

	#Downconvert 7.1 DTS-HD to AC3 5.1:
	ffmpeg -i in.mkv -map 0:a:0 -c ac3 -ac 6 -ab 640k ac3.mkv

	#Add downconverted audio streams via ffmpeg:
	ffmpeg -i in.mkv -i dts.mkv -i ac3.mkv -map 0:v -c:v copy -map 0:a -c:a copy -map 1:a -c:a copy -map 2:a -c:a copy -map 0:s -c:s copy out.mkv
	#Or use MKVToolNix

thielemans / routing.sh

Last active February 7, 2019 14:08

VPN routing script to only routes traffic for a specified user/group over VPN

	File: routing.up (chmod 0775)

	#!/bin/sh

	iptables -t mangle -A OUTPUT -m owner --uid-owner vpnusername -j MARK --set-mark 3 #Change vpnusername
	iptables -t nat -A POSTROUTING -o ${dev} -j SNAT --to-source ${ifconfig_local}

	ip rule add fwmark 3 lookup 200
	ip route add 192.168.1.0/24 dev eth0 table 200 # Change the IP to your LAN IP
	ip route add default via ${route_vpn_gateway} dev ${dev} table 200