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Sergey Matvienko spirit-q2

  • Kiev, Ukraine
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spirit-q2 /
Created Apr 29, 2020 — forked from protrolium/
using ffmpeg to extract audio from video files


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

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

View process_directory_oop.php
function processDirectory($start = './', $format = 'array') {
if (!empty($start)) {
$start = rtrim($start, '/') . '/';
if (!empty($start) && !is_dir($start)) {
return 'json' === $format ? 'false' : false;
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