M4A

MPEG-4 Audio (AAC)

Lolly opens and makes this format

An audio-only MP4 file, usually holding AAC-encoded sound, the format Apple devices and many browsers record natively. It sounds a little better than MP3 at the same size. Lolly's Voice Recorder can save your take as M4A, and imported M4A audio can drive a video's music bed. As an MP4-family file it carries a Content Credential over the same binding as MP4 - so a synthetic or AI-voiced clip stays attributable.

大多数同类工具都是上传型网站：你的文件会上传到他们的服务器，广告为此买单。Lolly 运行在你的设备上，因此你的文件始终留在你身边。

• 在你的设备上运行
• 免费，无需账号