M4V 轉 WV轉換工具

A free M4V to WV converter for iTunes Video files. Browser-based pairs here usually run in this tab, with no file upload.

把你的 M4V 檔案拖曳到這裡

or 瀏覽你的裝置 · 貼上快捷鍵 Ctrl+V

Accepts .m4v files. You can queue several files; each is processed one after another on your own device.

你的檔案不會離開這台裝置——沒有上傳，也沒有伺服器可以刪除它們。

使用方式

01
新增你的 M4V 檔案
把檔案拖放到上方的方框，或點擊以瀏覽選取。檔案會直接從磁碟讀取——不會傳送到任何地方。
02
檢查設定
WV is already selected. Open the gear icon on any row if you want to change quality, dimensions or codec before converting.
03
下載你的 WV
按下轉換，等待該列完成即可。若轉換多個檔案，可以將它們一起打包成單一 ZIP 檔下載。

M4V

iTunes Video

Apple 供 iTunes 使用的 MP4 變體格式，有時會帶有 FairPlay 數位版權管理。沒有 DRM 保護的檔案實際上就等同於 MP4；副檔名主要是讓 Apple 軟體知道該如何處理它。

開發者: Apple
發布年份: 2005
副檔名: .m4v
MIME 類型: video/x-m4v
壓縮方式: 有損

WV

WavPack

一種開放的無損編碼格式，具備特殊的混合模式：可以把檔案拆成一個較小的有損部分，加上一個能完美還原的校正檔。

開發者: David Bryant
發布年份: 1998
副檔名: .wv
MIME 類型: audio/x-wavpack
壓縮方式: 有損或無損
規格文件: 開放

轉換前值得了解的事

M4V is already lossy, and while WV can be saved either way, this conversion cannot restore discarded details. Saving it lossless here preserves what is already present instead of discarding more.
這次轉換只會保留音訊軌——畫面會被完全捨棄。

FAQ

關於 M4V 轉 WV 的常見問題

這個 M4V 轉 WV 轉換器是免費的嗎？

是的。在這裡把 M4V 轉換為 WV 完全免費，不需要帳號、沒有浮水印，也沒有每日次數限制。處理在你自己的裝置上完成，因此沒有需要轉嫁給你的伺服器成本。

我的 M4V 檔案會被上傳到任何地方嗎？

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.

M4V 轉 WV 有檔案大小限制嗎？

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 M4V 轉換為 WV 會損失品質嗎？

It depends on your selected settings and codec path. Many engines can write either lossy or lossless output for WV, so you can usually increase quality if this file is your final version.

可以一次把多個 M4V 檔案轉換為 WV 嗎？

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.

M4V 轉 WV 能在手機、Mac 或 Chromebook 上使用嗎？

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.

將其他格式轉換為 WV

這裡有 41 種格式可以轉換成 WV。

將 M4V 轉換為其他格式

一個 M4V 檔案可以轉換成以下任何一種格式。