ianchen06 / dash-avc264 command lines

Created March 28, 2016 10:12 — forked from ddennedy/dash-avc264 command lines

Use ffmpeg and mp4box to prepare DASH-AVC/264 v1.0 VoD

	See my DASH-IF presentation from October, 2014:
	https://s3.amazonaws.com/misc.meltymedia/dash-if-reveal/index.html#/

	1. encode multiple bitrates with keyframe alignment:
	ffmpeg -i ~/Movies/5D2_Portrait.MOV -s 1280x720 -c:v libx264 -b:v 1450k -bf 2 \
	-g 90 -sc_threshold 0 -c:a aac -strict experimental -b:a 96k -ar 32000 out.mp4

	My input was 30 fps = 3000 ms. If it were 29.97, then a GOP size of 90 frames will yield a base segment
	size of 3003 milliseconds. You can make the segment size some multiple of this, e.g.: 6006, 9009, 12012.

ianchen06 / start_stream.sh

Created March 31, 2016 03:31

ffmpeg hls live stream creator

	#!/bin/bash
	ffmpeg -v verbose -f video4linux2 -vcodec mjpeg -s 640x480 -r 5 -i /dev/video0 -c:v libx264 -crf 18 -profile:v baseline -maxrate 400k -bufsize 1835k -pix_fmt yuv420p -flags -global_header -hls_time 10 -hls_list_size 6 -hls_wrap 10 -start_number 1 /var/www/live/mystream.m3u8

ianchen06 / ffmpeg-web-video-guide.md

Created April 26, 2016 09:20 — forked from jaydenseric/ffmpeg-web-video-guide.md

A quick guide to using FFmpeg to create cross-device web videos.

Video conversion with FFmpeg

Install

On mac:

Download the latest release.
Extract the binary and place it in /usr/local/bin.

Command basics

ianchen06 / testvimgist.md

Last active May 6, 2016 13:33

My test gist

multinomial naive bayes classifier example

ianchen06 / big_camp_day2.md

Created May 10, 2016 03:52

big camp day 2 how to be a good god

Big Camp Day 2

怎樣做好一個上帝

上帝：做產品的人
凡人：用產品的人

記得做好切換！

Q: 需求從哪裡找？A: 從社交平台找需求，如果沒有點子的話。

ianchen06 / 18-05-2016.md

Created May 18, 2016 04:22

Use collections.Counter() for high performance containers as an alternative to dict(), userful for counting occurances. #Python https://docs.python.org/2/library/collections.html

ianchen06 / onchange.sh

Created May 19, 2016 03:21 — forked from evgenius/onchange.sh

	#!/bin/bash
	#
	# Watch current directory (recursively) for file changes, and execute
	# a command when a file or directory is created, modified or deleted.
	#
	# Written by: Senko Rasic <[email protected]>
	#
	# Requires Linux, bash and inotifywait (from inotify-tools package).
	#
	# To avoid executing the command multiple times when a sequence of

ianchen06 / Makefile

Created May 19, 2016 03:41 — forked from vdel26/Makefile

Makefile for working with a remote Nginx

	#### SETTINGS
	NGINXDIR = /usr/local/openresty/nginx/
	NGXCONF = nginx_dummycustomer.conf
	USER = ubuntu
	REMOTE = ec2-54-224-138-186.compute-1.amazonaws.com
	REMOTEDIR = /home/$(USER)/dummycustomer/
	PRIVATEKEY = /Users/victordg/.ssh/aws/vdg-3scale.pem
	####

ianchen06 / Vagrantfile

Last active April 13, 2017 11:38

notes on setting up spark 1.6.1 cluster with vagrant

	# -- mode: ruby --
	# vi: set ft=ruby :

	Vagrant.configure(2) do \|config\|
	config.vm.box = "ubuntu/trusty64"
	config.vm.define "worker1" do \|worker\|
	worker.vm.hostname = "worker1"
	worker.vm.network "private_network", ip: "192.168.34.10"
	worker.vm.provider "virtualbox" do \|vb\|
	vb.memory = "2048"

ianchen06 / create_pg_replicate.sh

Created July 21, 2016 10:54

Postgresql 9.5 stream replication master slave

	#install postgresql 9.5
	#==========================================
	sudo vim /etc/apt/sources.list.d/postgresql.list

	deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main 9.5

	wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc \| sudo apt-key add -
	sudo apt-get update
	sudo apt-get install postgresql-9.5