jmsaavedra

Collection of Useful ffmpeg Commands

• optimize with faststart (for mobile web)
• crf (quality) goes from 0 (lossless) - 50 (very poor).

ffmpeg -i input.mp4 -crf 30 -profile:v baseline -level 3.0 -movflags +faststart -an output.mp4

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neilvoss

////////////////////////////////////////////////////////////////////////////////

for ( var everything in large.amounts ) {
	count++;
}

////////////////////////////////////////////////////////////////////////////////

monday.rgb = 0x0000ff;

gbaman

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

ivan-loh

# Plain Ol' Node
node --max-old-space-size=1024 app.js                     # increase to 1gb
node --max-old-space-size=2048 app.js                     # increase to 2gb
node --max-old-space-size=3072 app.js                     # increase to 3gb
node --max-old-space-size=4096 app.js                     # increase to 4gb
node --max-old-space-size=5120 app.js                     # increase to 5gb
node --max-old-space-size=6144 app.js                     # increase to 6gb

# For pm2
pm2 start app.js --node-args="--max-old-space-size=1024" # increase to 1gb

danmactough

#!/bin/bash -xe
# Unload nouveau
sudo rmmod nouveau
# Load nvidia
sudo modprobe nvidia
# Configure X
sudo nvidia-xconfig --use-display-device=None --virtual=1280x1024 --output-xconfig=/etc/X11/xorg.conf --busid=PCI:0:3:0 --enable-all-gpus

cletusw

{
  // http://eslint.org/docs/rules/

  "ecmaFeatures": {
    "binaryLiterals": false,                    // enable binary literals
    "blockBindings": false,                     // enable let and const (aka block bindings)
    "defaultParams": false,                     // enable default function parameters
    "forOf": false,                             // enable for-of loops
    "generators": false,                        // enable generators
    "objectLiteralComputedProperties": false,   // enable computed object literal property names

witooh

sudo apt-get install python-software-properties
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:rwky/graphicsmagick
sudo apt-get update
sudo apt-get install graphicsmagick

jmsaavedra

Install FFmpeg via CLI on Linux box

These steps walk through installing a static binary of any ffmpeg version on to your linux machine. If you want to compile from source, there are several ways to do so. Here's the official guide. Tested and works on an AWS EC2 Ubuntu instance, but should work on any Linux machine.

http://ffmpeg.org

• SSH into your instance and become root

jmsaavedra

SD CARD IMAGE COPY AND RESTORE

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great for RaspberryPi disk imaging and copying.

LOCATE AND UNMOUNT DISK

insert SD card into computer. to see all volumes mounted to machine:

$ diskutil list

jmsaavedra

AWS SERVER CONFIGURATION

Configuring an Ubuntu AWS Box with Node, Mongodb, and Forever with port forwarding

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• Login to aws.amazon.com and create an EC2 instance with a standard Ubuntu (14.04) installation.
• Create a Security Group that allows type SSH on port 22 and HTTP on port 80.
• Download the .pem file (during setup) which we'll use to authenticate into your server via terminal.
• Modify permissions on the .pem file downloaded from AWS

$ chmod 0600 ~/Downloads/{your_key}.pem