AC3 轉 OPUS轉換工具
A free AC3 to OPUS converter for Dolby Digital files. Browser-based pairs here usually run in this tab, with no file upload.
把你的 AC3 檔案拖曳到這裡
or 瀏覽你的裝置 · 貼上快捷鍵 Ctrl+V
Accepts .ac3 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。
- 01
新增你的 AC3 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
OPUS 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 OPUS
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。
AC3
Dolby DigitalDVD、藍光光碟與電視廣播使用的 5.1 環繞聲標準。當你需要在耳機或手機上播放時，可將它轉成立體聲的 AAC 或 MP3。
- 開發者
- Dolby Laboratories
- 發布年份
- 1991
- 副檔名
- .ac3
- MIME 類型
- audio/ac3
- 壓縮方式
- 有損
OPUS
Opus Interactive Audio Codec目前表現最佳的有損編碼格式，也是 IETF 標準。它在 24 kbps 就能處理好語音、在 128 kbps 也能兼顧完整音樂，這正是 WhatsApp、Discord 與所有 WebRTC 通話都採用它的原因。
- 開發者
- IETF / Xiph.Org
- 發布年份
- 2012
- 副檔名
- .opus
- MIME 類型
- audio/opus
- 壓縮方式
- 有損
- 規格文件
- 開放
- Both AC3 and OPUS are lossy formats, so repeated conversions can accumulate rounding artifacts. Keep this to only what you need and avoid repeated round-trips.
關於 AC3 轉 OPUS 的常見問題
這個 AC3 轉 OPUS 轉換器是免費的嗎？
是的。在這裡把 AC3 轉換為 OPUS 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 AC3 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.
AC3 轉 OPUS 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 AC3 轉換為 OPUS 會損失品質嗎？
OPUS 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 AC3 file if you might need it again.
可以一次把多個 AC3 檔案轉換為 OPUS 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.
AC3 轉 OPUS 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 OPUS
這裡有 41 種格式可以轉換成 OPUS。
將 AC3 轉換為其他格式
一個 AC3 檔案可以轉換成以下任何一種格式。