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A Processor Friendly Guide to Downscale MP4 File Using FFmpeg, cpulimit and nice

A practical walkthrough for reducing video resolution and file size, optimized for low processor load, cooler temperatures, and smooth performance on any machine.

Working with high-resolution video doesn't have to mean melting your computer. Whether you're editing a 4K clip on an older laptop or simply trying to share a video without maxing out your CPU fan, downscaling is one of the most effective tools you have, and most people are doing it the hard way.

What I use for this guide:

A working computer (Intel© Core™ i5-4460 CPU @ 3.20GHz × 4)
16 GB of RAM

Git commands Cheat Sheet

Initialize a new git repository:

git init

Set configuration values for your username and email:

git config --global user.name

How to Disable SLiMS v9.6.1 Member Section (Redirect to Home)

Backup your SLiMS directory first.

File /template/default/index_template.inc.php

Line number 42, change:

include 'parts/_member.php';

List databases:

\l

Use a database:

\c db_name

Use schema other than default 'public':

Move a window to another workspace

Press Ctrl+Alt+Shift Left or Ctrl+Alt+Shift Right

Move a window to another monitor

Press Super+Shift Left or Super-Shift Right

Move active window around on the desktop

Search and Replace

Search and replace PHP variable in if control structure using regex:

if \(isset\(\$([a-zA-Z_]+)\)\) \{

Replace pattern

if (isset($$$1) AND $$$1 !== '') {

Install Apache2, PostgreSQL and PHP-FPM 8.2 on Ubuntu 20.04

Install Apache

sudo apt install apache2

sudo ufw app list

sudo ufw allow in "Apache"

	<html>
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1" />
	<title>Examples Bootstrap v5.3</title>
	<script src="./assets/js/color-modes.js"></script>
	<link href="./assets/dist/css/bootstrap.min.css" rel="stylesheet" />
	<style>
	body {margin: 1em 1em}
	.three-column-list {

	#!/bin/bash
	#convert
	for image in *.png; do
	convert "$image" -quality 80 "${image%.png}.jpg"
	echo “$image converted to ${image%.png}.jpg ”
	done
	exit 0