Mohammad Reza Taesiri taesiri

How to install OpenCV 4.2.0 with CUDA 10.0 in Ubuntu distro 18.04

First of all install update and upgrade your system:

    $ sudo apt update
    $ sudo apt upgrade

Then, install required libraries:

Low-Latency Live Streaming for your Desktop using ffmpeg and netcat:

Preamble:

In this post I will explore how to stream a video and audio capture from one computer to another using ffmpeg and netcat, with a latency below 100ms, which is good enough for presentations and general purpose remote display tasks on a local network.

The problem:

Streaming low-latency live content is quite hard, because most software-based video codecs are designed to achieve the best compression and not best latency. This makes sense, because most movies are encoded once and decoded often, so it is a good trade-off to use more time for the encoding than the decoding.

Streaming your Linux desktop to Youtube and Twitch via Nvidia's NVENC and VAAPI:

Considerations to take when live streaming:

The following best practice observations apply when using a hardware-based encoder for live streaming to any platform:

Set the buffer size (-bufsize:v) equal to the target bitrate (-b:v). You want to ensure that you're encoding in CBR mode.
Set up the encoders as shown:

	import csv
	import tweepy

	# get credentials at developer.twitter.com
	auth = tweepy.OAuthHandler('API Key', 'API Secret')
	auth.set_access_token('Access Token', 'Access Token Secret')

	api = tweepy.API(auth)

	# update these for whatever tweet you want to process replies to

	write-host("Ad-Hoc Creator")
	write-host("Please enter an SSID") -foreground "green"
	$network_name = Read-Host
	write-host("Please enter a Password") -foreground "green"
	$network_pass = Read-Host
	write-host "Stopping current hosted network ..." -foreground "yellow"
	netsh wlan stop hostednetwork
	write-host "Creating new network ..."-foreground "green"
	netsh wlan set hostednetwork mode=allow ssid=$network_name key=$network_pass
	write-host("Starting network ...") -foreground "green"

	{
	"layout": "splitv",
	"percent": 0.5,
	"type": "con",
	"nodes": [
	{
	"layout": "splitv",
	"percent": 0.5,
	"type": "con",
	"nodes": [

	{
	"layout": "splitv",
	"percent": 0.5,
	"type": "con",
	"nodes": [
	{
	"layout": "splith",
	"percent": 0.5,
	"type": "con",
	"nodes": [

	{
	"layout": "splitv",
	"percent": 0.5,
	"type": "con",
	"nodes": [
	{
	"name": "Agent1",
	"percent": 0.5,
	"type": "con",
	"swallows": [ {"class": "BipedalWalker"}]

	# This file has been auto-generated by i3-config-wizard(1).
	# It will not be overwritten, so edit it as you like.
	#
	# Should you change your keyboard layout some time, delete
	# this file and re-run i3-config-wizard(1).
	#

	# i3 config file (v4)
	#
	# Please see https://i3wm.org/docs/userguide.html for a complete reference!