AVI 转 M4B 转换器

A free AVI to M4B converter for Audio Video Interleave files. Browser-based pairs here usually run in this tab, with no file upload.

将你的 AVI 文件拖放到这里

or 浏览你的设备 · 粘贴快捷键 Ctrl+V

Accepts .avi files. You can queue several files; each is processed one after another on your own device.

你的文件永远不会离开这台设备 —— 没有上传，也就没有服务器可以从中删除它们。

使用方法

01
添加你的 AVI 文件
将文件拖放到上方的方框里，或点击浏览选择。它们会直接从磁盘读取 —— 不会发送到任何地方。
02
检查设置
M4B is already selected. Open the gear icon on any row if you want to change quality, dimensions or codec before converting.
03
下载你的 M4B
点击转换，等待该行处理完成。转换多个文件时，可以将它们全部打包为一个 ZIP 一次性下载。

AVI

Audio Video Interleave

微软 1992 年推出的容器格式，至今仍常见于老旧摄像设备录像和历史档案中。它诞生于流媒体和可变帧率出现之前，因此转换为 MP4 通常既能缩小文件体积，又能修复播放问题。

开发者: Microsoft
发布时间: 1992
扩展名: .avi
MIME 类型: video/x-msvideo
压缩方式: 有损或无损

M4B

MPEG-4 Audiobook

一种标记自己为有声书的 M4A 文件，因此播放器会记住播放进度并支持章节标记。Audible 的书籍在去除 DRM 保护后就会变成这种格式。

开发者: Apple
发布时间: 2003
扩展名: .m4b
MIME 类型: audio/mp4
压缩方式: 有损

转换前值得了解

M4B is lossy, so if the source AVI was lossless this is the first lossy step. If it was already lossy, any additional impact is often smaller.
这次转换只会保留音轨 —— 画面会被完全丢弃。

FAQ

关于 AVI 转 M4B 的常见问题

这个 AVI 转 M4B 转换器是免费的吗？

是的。在这里把 AVI 转换为 M4B 完全免费，无需账号、没有水印、也没有每日次数限制。处理在你自己的设备上完成，因此不存在需要转嫁给你的服务器成本。

我的 AVI 文件会被上传到任何地方吗？

For browser-based pairs, your file is read locally and converted by ffmpeg in this tab. No file payload is uploaded; you may still see analytics and engine downloads in network logs.

AVI 转 M4B 有文件大小限制吗？

There is no imposed upload cap when it runs in-browser, but each conversion still depends on your device and browser memory. Large videos are the first practical limit, then memory-heavy documents or images.

把 AVI 转换为 M4B 会损失质量吗？

M4B is a lossy format, so some detail is discarded when it is encoded. At the default quality setting the change is often not visually obvious; keep your original AVI file if you might need it again.

可以一次把多个 AVI 文件转换为 M4B 吗？

Yes. Drop in several files and each gets its own row; they are processed one after another on your device. You can download them one by one or as one ZIP.

AVI 转 M4B 能在手机、Mac 或 Chromebook 上使用吗？

Most modern browsers on Windows, macOS, Linux, ChromeOS, Android and iOS work. Very large videos are often more reliable on desktop or a browser with more memory.

Why do some conversions take longer on first run?

The conversion engine has to download first. Small codec bundles are fast, while ffmpeg is commonly 12–30 MB; later conversions of similar type use the cached engine.

I converted a file and the output is blank or unusable. What should I check?

Start over with default settings, then change one option at a time (quality, bitrate, page size, or codec) to isolate what changed behavior. If it keeps failing, retry with a smaller file and confirm the source format matches the pair.

将其他格式转换为 M4B

此处共有 41 种格式可以转换为 M4B。

将 AVI 转换为其他格式

一个 AVI 文件可以转换为以下任意一种格式。