MP4 to M4A Conversor

Converta seus arquivos de áudio, vídeo e outros de um formato para outro online grátis!

Ou solte os arquivos aqui. Tamanho máximo de 1 GB por arquivo.

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MP4

MP4 is a file format supported by Convertr for online file conversion workflows.

M4A

M4A is a file format supported by Convertr for online file conversion workflows.

What happens when MP4 becomes M4A

Formato de origem

MP4 is a widely supported media container, commonly carrying H.264 or H.265 video and AAC audio.

Formato de objetivo

M4A is an MPEG-4 audio container that commonly carries AAC or Apple Lossless audio.

Quais mudanças

The audio stream is decoded from the MP4 container and encoded as M4A audio.

The video track, frames, subtitles, chapters, and visual metadata are not included in the audio output.

O que é preservado
Audio duration and channel layout are preserved when the source stream and target codec support them.
What may be lost
All visual content is intentionally discarded.
Codec and quality implications
Inspect the output before replacing the source, especially when the formats use different layout, codec, or editing models.
Realistic limitations
A MP4 file with no decodable audio stream cannot produce M4A audio. Corrupt, encrypted, or unsupported codecs can also fail.

Passos de conversão

  1. Upload a MP4 file no larger than 1 GB.
  2. Confirm that M4A is selected as the target.
  3. Start the conversion. A healthy compatible worker begins processing immediately.
  4. Download the M4A file and check the result before deleting your source.

Resolução de problemas

The MP4 file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The M4A file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
The result has no sound or will not play.
Try a broadly supported target codec and verify that the source contains a decodable audio stream.

Privacidade e retenção de arquivos

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

Read the privacy policy

Alternativas úteis

MP4 to AAC Use this when AAC better matches the app, codec, or editing workflow you need. MP4 to AIFF Use this when AIFF better matches the app, codec, or editing workflow you need.