FFmpeg - change audio codec

Question

Here is my code:

$format = new X264('aac', 'libx264');
$format->setKiloBitrate(500);

but when videos transcode with pascalbaljetmedia/laravel-ffmpeg, this package sets audio codec to mp3 by default instead aac.

How solve this problem?

Answer 1

I told you about the libfaac encoder. But I figured out this one was deprecated in 2016. Because there are other better encoders out there such as aac, libfdk_aac, aac_at etc. Check out more here.

You should first check those encoders out on your command line tool to make sure your ffmpeg was compiled with those encoders. Let's use aac encoder because it is included by default in all ffmpeg versions.

ffmpeg -i real_audio.mp3 -c:a aac converted_audio.aac

I used the laravel-ffmpeg with aac encoder to convert mp3 to aac. It worked like a charm. See the following code:

<?php

namespace App\Http\Controllers;

use FFMpeg\Format\Video\X264;
use ProtoneMedia\LaravelFFMpeg\Support\FFMpeg;

class TestController extends Controller
{
    public function index() 
    {
        echo "<p>Converting...</p>";

        FFMpeg::fromDisk('public')
            ->open('audio.mp3')
            ->export()
            ->toDisk('public')
            ->inFormat(new X264('aac'))
            ->save('converted_audio.aac');
    }
}

To know more about aac encoder use the following command:

ffmpeg -h encoder=aac

My laravel-ffmpeg package version is

"pbmedia/laravel-ffmpeg": "^7.0"

and ffmpeg version is

ffmpeg version 3.4.6

Hope this helps you!