jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

stengland

#EXTM3U
#EXTINF:-1,BBC - Radio 1
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p
#EXTINF:-1,BBC - Radio 2
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio2_mf_p
#EXTINF:-1,BBC - Radio 3
http://open.live.bbc.co.uk/mediaselector/5/select/version/2.0/mediaset/http-icy-aac-lc-a/format/pls/vpid/bbc_radio_three.pls
#EXTINF:-1,BBC - Radio 4
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio4fm_mf_p
#EXTINF:-1,BBC - Radio 5 live

thomaspoignant

GOCMD=go
GOTEST=$(GOCMD) test
GOVET=$(GOCMD) vet
BINARY_NAME=example
VERSION?=0.0.0
SERVICE_PORT?=3000
DOCKER_REGISTRY?= #if set it should finished by /
EXPORT_RESULT?=false # for CI please set EXPORT_RESULT to true

GREEN  := $(shell tput -Txterm setaf 2)

maxlapshin

/*
 *  V4L2 video capture example
 *
 *  This program can be used and distributed without restrictions.
 *
 *      This program is provided with the V4L2 API
 * see http://linuxtv.org/docs.php for more information
 */

#include <stdio.h>

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

lukehedger

$ ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 output.mp4

rossja

Tizen Hacking

Contents

1. Device Info
2. Modes HOWTO
   1. Recovery Mode
   2. Bootloader Mode
   3. Developer Mode