Endre Simo esimov

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

A half-hour to learn Zig

This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/

Basics

the command zig run my_code.zig will compile and immediately run your Zig program. Each of these cells contains a zig program that you can try to run (some of them contain compile-time errors that you can comment out to play with)

	// options
	String imagePath = "img/desandro-avatar.jpg";
	float res = 10; // resolution, dot density
	float zoom = 3.0; // proportion to zoom image
	boolean isAdditive = true; // true = RGB, false = CMY
	float offsetAngle = 1; // affects dot pattern
	/*
	0 = no patter
	0.05 = slight offset
	1 = slight offset

	{
	"cmd": ["haml"],
	"working_dir": "${file_path:${folder}}",
	"selector": "source.haml",
	"file_regex": "(.\\.ts?)\\s\\(([0-9]+)\\,([0-9]+)\\)\\:\\s(...?)$",

	"windows":
	{
	"cmd": ["haml", "--trace", "$file", "${file_base_name}.html"],
	"shell": "true"

	{

	"cmd": ["sass", "--update", "$file:${file_path}/${file_base_name}.css"],
	"selector": "source.sass",
	"line_regex": "Line ([0-9]+):",

	"osx":
	{
	"path": "/usr/local/bin:$PATH"
	},

	// Q sample by Jeff Cogswell

	/*===========
	We want to call these three functions in sequence, one after the other:

	First we want to call one, which initiates an ajax call. Once that
	ajax call is complete, we want to call two. Once two's ajax call is
	complete, we want to call three.

	BUT, we don't want to just call our three functions in sequence, as this quick

	package main

	import (
	"fmt"
	"time"
	)

	const LIM = 41
	var facts [LIM]uint64