Audio Codec Swap

Audio Codec Swap | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Media
Input types: file, select, checkbox
Output type: file
Sample coverage: 4
API ready: Yes

Overview

Audio Codec Swap converts a supported audio file to a selected output format such as MP3, AAC, M4A, OGG, Opus, FLAC, or WAV, with controls for bitrate, sample rate, channels, and metadata.

When to use

Convert an audio file to a format supported by a specific player or workflow.
Choose a target bitrate to balance audio quality and file size.
Change sample rate, channel layout, or metadata handling during conversion.

How it works

1Upload one supported audio file in MP3, AAC, M4A, OGG, Opus, FLAC, or WAV format.
2Select an output format, such as MP3, AAC, M4A, OGG Vorbis, Opus, FLAC, or WAV.
3Choose the target bitrate, sample rate, and audio channels, or keep the original settings where available.
4Keep metadata enabled or disable it, then generate the converted audio file.

Use cases

Prepare a WAV or FLAC recording as an MP3 for general playback.
Convert audio to AAC or M4A for a workflow that requires those formats.
Create mono audio at a selected bitrate for voice recordings or other single-channel content.

Examples

1. Convert a WAV recording to MP3

Podcast editor

Background

A podcast editor has a WAV recording and needs an MP3 version for a general-purpose audio workflow.

Problem

The source file is not in the preferred output format.

How to use

Upload the WAV file, select MP3 as the output format, and choose a target bitrate.

Output format: MP3; Target bitrate: 192 kbps; Sample rate: Auto; Audio channels: Auto; Keep Metadata: enabled.

Outcome

The tool returns an MP3 audio file using the selected bitrate while keeping the original sample rate and channels.

2. Create a mono AAC file

Voice content creator

Background

A creator has an audio file and wants an AAC output with one audio channel.

Problem

The output needs a different codec and mono channel layout.

How to use

Upload the source audio, select AAC as the output format, and choose Mono for Audio Channels.

FAQ

Which input audio formats are supported?

You can upload MP3, AAC, M4A, OGG, Opus, FLAC, or WAV files.

Which output formats are available?

The available outputs are MP3, AAC, M4A, OGG Vorbis, Opus, FLAC, and WAV.

Can I choose the audio bitrate?

Yes. Select 96, 128, 160, 192, 256, or 320 kbps.

Can I change the sample rate and channels?

Yes. You can keep the original sample rate and channels or choose 44.1 kHz or 48 kHz and mono or stereo.

Can metadata be retained?

Yes. The Keep Metadata option is enabled by default and can be turned off.

Output format: AAC; Target bitrate: 128 kbps; Sample rate: 44.1 kHz; Audio channels: Mono; Keep Metadata: enabled.

3. Convert FLAC to WAV

Audio technician

Background

An audio technician needs a WAV version of a FLAC source for a workflow that uses WAV output.

Problem

The source and required output formats are different.

How to use

Upload the FLAC file, select WAV, and leave the sample rate and channels set to Auto.

Output format: WAV; Target bitrate: 320 kbps; Sample rate: Auto; Audio channels: Auto; Keep Metadata: enabled.

Outcome

The tool returns a WAV audio file with the original sample rate and channel settings selected automatically.

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Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Convert a WAV recording to MP3

2. Create a mono AAC file

FAQ

Copyright-Free FLAC Audio Samples

Copyright-Free WAV Audio Samples

Copyright-Free MP3 Audio Samples

Copyright-Free M4A Audio Samples

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3. Convert FLAC to WAV