Florentin Schäfer LetUsFlow

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Converting mkv to mp4 with `ffmpeg`

Essentially just copy the existing video and audio stream as is into a new container, no funny business!

The easiest way to "convert" MKV to MP4, is to copy the existing video and audio streams and place them into a new container. This avoids any encoding task and hence no quality will be lost, it is also a fairly quick process and requires very little CPU power. The main factor is disk read/write speed.

With ffmpeg this can be achieved with -c copy. Older examples may use -vcodec copy -acodec copy which does the same thing.

These examples assume ffmpeg is in your PATH. If not just substitute with the full path to your ffmpeg binary.

Single file conversion example

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

	#!/usr/bin/env python3
	"""Flatpak CLI Shortcut Generator

	A simple no-argument tool that generates launchers with traditional non-flatpak
	command names for your installed Flatpak applications in ~/.local/bin/flatpak.

	Does full collision detection and warns you if you forgot to add its output
	directory to your PATH. Also overrules the command-line specified in the
	``.desktop`` file if the Flatpak maintainer didn't include support for
	command-line arguments.

	/*
	********************************************************************************
	Golang - Asterisk and Ampersand Cheatsheet
	********************************************************************************

	Also available at: https://play.golang.org/p/lNpnS9j1ma

	Allowed:
	--------
	p := Person{"Steve", 28} stores the value

	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1" />
	<title>Enterprisify your Java Class Names! (by Hay Kranen)</title>
	<style>
	body {
	background: white;
	text-align: center;

	/* The world's smallest Brainfuck interpreter in C, by Kang Seonghoon
	* http://j.mearie.org/post/1181041789/brainfuck-interpreter-in-2-lines-of-c */
	s[99],r=s,d,c;main(a,b){charv=1[d=b];for(;c=v++%93;)for(b=c&2,b=c%7?a&&(c&17
	?c&1?(r+=b-1):(r+=b-1):syscall(4-!b,b,r,1),0):v;b&&c\|a*r;v=d)main(!c,&a);d=v;}

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