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How to combine M4A files

Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Gerador de voz com IA nº 1.
Crie narrações com qualidade humana
em tempo real.

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50M+ usuários

Merging audio files can be a useful task, especially when dealing with M4A files, which are renowned for their superior sound quality. Whether you're compiling a podcast, creating a music playlist, or simply trying to organize your audio files more efficiently, being able to combine M4A files into a single file can be extremely helpful.

Here, we’re giving a comprehensive guide on M4A files, their uses, and, most importantly, how to merge them effortlessly online using Speechify Video Studio. We'll cover everything from the basic definition and uses of M4A files to the step-by-step process of merging them online. We'll also address some common questions you may have about the process.

What are M4A files?

M4A files are audio files that are stored in a container format known as the MPEG-4 Part 14 (.mp4 or .m4a) file format. This format was developed by Apple Inc. and is often used in their iTunes and iPod products. The "M4A" stands for MPEG 4 Audio.

M4A files are similar to MP3 files, but they use a compression algorithm that can deliver higher quality sound with the same or even less file size. This algorithm is known as Advanced Audio Coding (AAC), though M4A files can also use Apple's proprietary Apple Lossless Audio Codec (ALAC) for lossless compression.

This format is popular for music files and audiobooks, as it can handle metadata like song titles, artist names, album names, and more. It also supports album artwork and other advanced features not typically found in other audio file formats. However, it's worth noting that while M4A files offer superior sound quality, they might not be as widely supported as MP3 files, particularly on non-Apple devices.

What are M4A files used for?

M4A files are primarily used for storing audio data, such as music tracks, podcasts, and audiobooks. Due to their superior quality and relatively small file size, they're popular for digital music distribution, particularly on Apple's platforms like iTunes and the iOS Music app. Here are a few specific uses of M4A files:

  • Music files: M4A files are often used for digital music, as they can offer better quality than MP3s at the same or even a smaller file size.
  • Audiobooks and podcasts: M4A is a common format for audiobooks and podcasts because it supports chapter markers, allowing listeners to easily navigate through the content.
  • Ringtone files: On Apple devices, M4A files (with the extension changed to M4R) are used for ringtones.
  • Distribution on iTunes and Apple Music: Artists and music distributors often use M4A files when submitting music to the iTunes Store or Apple Music, as these services favor the M4A format.
  • Recording voice: Some apps and devices use M4A to store voice recordings, thanks to the format's good quality-to-size ratio.
  • Music production and editing: Some music editing and production software can export audio in the M4A format.

Keep in mind that while M4A files are popular, particularly among Apple users, they're not as universally compatible as MP3 files. Not all devices and players support M4A, so sometimes it's necessary to convert M4A to MP3 or another more widely supported format.

How to combine M4A files online

Effortlessly merge multiple M4A audio files into a single file, and download them as an MP3 using our online M4A joiner. Seamlessly combine your audio files straight from your web browser, both on Windows and MacOS, without the need for a free download or installing an app. Speechify Video Studio also provides the flexibility to edit your audio, including splitting, trimming, and rearranging audio clips. As an M4A merger, it ensures minimal loss in audio quality during the merge process. In addition, it serves as a platform for video creation with our integrated video editor.

To merge your M4A audio files, follow these steps:

Step 1: Choose files

Upload your M4A files to Speechify Video Studio. You can add files directly from your device, Google Drive, or simply drag and drop your music files into the editor.

Step 2: Merge and/or edit your audio

Your audio files can be downloaded as one MP3 file or edited using our audio and video editor. Features include cutting, trimming, splitting, and rearranging tracks. Premium subscribers can also enjoy enhanced audio by removing background noise with a single click.

Step 3: Export

Simply click export to download your audio as a single MP3 file.

Merge M4A files with Speechify Video Studio

Our audio merger supports M4A files and allows you to combine them directly from your browser, whether on desktop or mobile (iOS or Android). No need to download an app or fiddle with iTunes. Edit audio tracks on the fly and utilize our extensive video editing toolkit. Create eye-catching music videos using your audio files and even add subtitles for added context.

Within the app, you can also create videos with your music tracks, bypassing the need for a third-party app. Speechify Video Studio is a complete video editing suite, allowing you to add background music, sound effects, voiceovers, and more. It functions as a video converter as well. You can upload video files like AVI, MOV, or WebM, and convert them into the universally supported MP4 (MPEG-4) file format.

Speechify Video Studio supports multiple audio formats—including WAV, AAC, MP3, WMA, OGG, AIFF, and more. You can edit, cut, split, or trim them. Use the editor to rearrange your audio tracks and create unique sound mixes, all with an adjustable bit rate to suit your needs. For the final output, you can choose to download your tracks as one MP3 file.

With Speechify Video Studio's M4A joiner, you can consolidate your music library, make playlists, create audiobooks, or simply manage your audio files better. Our tutorials and support are always available to ensure you have the best experience, be it on an iPhone, or an Apple or Windows PC.

Get started with Speechify Video Studio's audio joiner and video editor today.

FAQ

Can I adjust the playback speed of my audio?

Yes, absolutely. You can make your audio clips play faster or slower using Speechify Video Studio’s audio editor. Choose the speed you want from 0.5x, 1x, 2x, etc. Alternatively, you can click on custom and input your desired speed.

How do I merge M4A files into a single file on Mac?

Speechify Video Studio works seamlessly across platforms—MacOS, Windows, and all mobile devices. Merge files and edit them straight from your browser. There's no need for an app download.

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Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Cliff Weitzman é um defensor da causa da dislexia e o CEO e fundador da Speechify, o aplicativo número 1 de conversão de texto em fala do mundo, com mais de 100.000 avaliações 5 estrelas e líder de downloads na App Store na categoria Notícias & Revistas. Em 2017, Weitzman foi incluído na lista Forbes 30 under 30 por seu trabalho para tornar a internet mais acessível a pessoas com dificuldades de aprendizagem. Cliff Weitzman já foi destaque em veículos como EdSurge, Inc., PC Mag, Entrepreneur, Mashable, entre outros importantes meios de comunicação.

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Sobre o Speechify

Leitor de texto para fala nº 1

Speechify é a principal plataforma mundial de texto para fala, utilizada por mais de 50 milhões de usuários e avaliada com mais de 500.000 avaliações cinco estrelas em seus apps de texto para fala para iOS, Android, extensão para Chrome, aplicativo web e aplicativo para desktop Mac. Em 2025, a Apple premiou o Speechify com o prestigioso Prêmio de Design da Apple na WWDC, chamando-o de “um recurso fundamental que ajuda as pessoas a viverem melhor”. O Speechify oferece mais de 1.000 vozes naturais em mais de 60 idiomas e é utilizado em quase 200 países. Entre as vozes de celebridades estão Snoop Dogg, Mr. Beast e Gwyneth Paltrow. Para criadores e empresas, o Speechify Studio oferece ferramentas avançadas, incluindo gerador de voz com IA, clonagem de voz com IA, dublagem com IA e seu alterador de voz com IA. O Speechify também potencializa produtos de ponta com sua API de texto para fala de alta qualidade e excelente custo-benefício. Em destaque no The Wall Street Journal, na CNBC, na Forbes, no TechCrunch e em outros grandes veículos de notícias, o Speechify é o maior provedor de texto para fala do mundo. Acesse speechify.com/news, speechify.com/blog e speechify.com/press para saber mais.