WebM 轉 MKA轉換工具

A free WebM to MKA converter for WebM files. Browser-based pairs here usually run in this tab, with no file upload.

把你的 WebM 檔案拖曳到這裡

or 瀏覽你的裝置 · 貼上快捷鍵 Ctrl+V

Accepts .webm 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 WebM 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
MKA 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 MKA
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。

WebM

Google 為 HTML5 影片打造的免權利金容器格式，搭配 VP8 或 VP9 影片與 Vorbis 或 Opus 音訊。在相同畫質下比 H.264 版的 MP4 更小，且所有現行瀏覽器都支援。

開發者: Google
發布年份: 2010
副檔名: .webm
MIME 類型: video/webm
壓縮方式: 有損
規格文件: 開放

MKA

Matroska Audio

純音訊版的 Matroska 容器格式。和 MKV 一樣，幾乎能容納任何編碼格式，還可以加上章節與多個音軌，很適合用於有聲書和演唱會錄音。

開發者: Matroska (CoreCodec)
發布年份: 2002
副檔名: .mka
MIME 類型: audio/x-matroska
壓縮方式: 有損或無損
規格文件: 開放

轉換前值得了解的事

WebM is already lossy, and while MKA 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 WebM 轉 MKA 的常見問題

這個 WebM 轉 MKA 轉換器是免費的嗎？

是的。在這裡把 WebM 轉換為 MKA 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 WebM 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.

WebM 轉 MKA 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 WebM 轉換為 MKA 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 MKA, so you can usually increase quality if this file is your final version.

可以一次把多個 WebM 檔案轉換為 MKA 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.

WebM 轉 MKA 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 MKA

這裡有 41 種格式可以轉換成 MKA。

將 WebM 轉換為其他格式

一個 WebM 檔案可以轉換成以下任何一種格式。