Harald Lapp aurora

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/

Getting LADSPA plugins working on Sonic Pi

This is an evil experiment at the moment but it works

Download and install LMMS from http://lmms.io
Run the attached SuperCollider file to create the synthdef locally (Overtone doesn't have ladspa yet)
patch the named ruby files as per the other attachments
start Sonic Pi

How to Add a Watermark to Video

FFMPEG filters provide a powerful way to programmatically enhance or alter videos, and itâ€™s fairly simple to add a watermark to a video using the overlay filter. The easiest way to install ffmpeg is to download a pre-built binary for your specific platform. Then you donâ€™t have to worry about including and installing all the right dependencies and codecs you will be using.

Once you have ffmpeg installed, adding a watermark is as easy as passing your existing source through an overlay filter like so:

ffmpeg -i test.mp4 -i watermark.png -filter_complex "overlay=10:10" test1.mp4

Basically, weâ€™re passing in the original video, and an overlay image as inputs, then passing it through the filter, and saving the output as test1.mp4.

	/**
	* An implementation of an API similar to ncurses, but which instead runs on
	* HTMl5 canvas.
	*
	* Specifically, this is designed to duplicate the following elements of ncurses:
	*
	* - Basic text printing
	* - Colors
	* - Handling window hierarchies, which respect their parents bounds (so that
	* drawing doesn't occur outside of a window's boundaries). They have their own

	#!/bin/bash
	# Installation:
	# cd my_gitproject
	# wget -O pre-commit.sh http://tinyurl.com/mkovs45
	# ln -s ../../pre-commit.sh .git/hooks/pre-commit
	# chmod +x pre-commit.sh

	OPTIONS="-A8 -t8 --lineend=linux"

	RETURN=0

	#!/usr/bin/env sh

	# This script captures keyboard events on popular POSIX Shells.
	#
	# Run it by executing ./answer.sh and press the arrow keys
	# to see the capture exemple. Press Return to exit.
	#
	# It has been tested on:
	# - Windows (Git Bash and MSYS+Mintty)
	# - OS X (native terminal, Yosemite)

	# Step 1: Install the following 3rd party prerequisites, you can get these from macports:
	#
	# sudo port install libpng
	# sudo port install libsdl_ttf
	# sudo port install libsdl_mixer
	#
	# Step 2: Download and unzip Vulture Nethack source from http://www.darkarts.co.za/vulture-for-nethack
	#
	# Step 3: Place this file at the base of the unzipped vulture nethack source directory, and run it:
	# sh vulture-nethack-mac-build.sh

	import requests
	from requests.auth import HTTPBasicAuth
	import re
	from StringIO import StringIO

	JIRA_URL = 'https://your-jira-url.tld/'
	JIRA_ACCOUNT = ('jira-username', 'jira-password')
	# the JIRA project ID (short)
	JIRA_PROJECT = 'PRO'
	GITLAB_URL = 'http://your-gitlab-url.tld/'