AVI 轉 Y4M轉換工具

A free AVI to Y4M converter for Audio Video Interleave files. Browser-based pairs here usually run in this tab, with no file upload.

把你的 AVI 檔案拖曳到這裡

or 瀏覽你的裝置 · 貼上快捷鍵 Ctrl+V

Accepts .avi 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 AVI 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
Y4M 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 Y4M
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。

AVI

Audio Video Interleave

微軟在 1992 年推出的容器格式，至今仍常見於老舊攝影機畫面與歷史檔案中。它出現得比串流與可變影格率技術更早，因此轉成 MP4 通常能同時縮小檔案、修正播放問題。

開發者: Microsoft
發布年份: 1992
副檔名: .avi
MIME 類型: video/x-msvideo
壓縮方式: 有損或無損

Y4M

YUV4MPEG2

在極小的文字標頭之後接著完全未壓縮的原始畫格資料。多用於編碼器測試與無損中繼檔案，檔案體積相當龐大。

副檔名: .y4m
MIME 類型: video/x-yuv4mpeg2
壓縮方式: 未壓縮
規格文件: 開放

轉換前值得了解的事

Y4M stores the incoming samples as provided, so this step does not add generic quality loss. If the source AVI was already lossy, those earlier losses remain.

FAQ

關於 AVI 轉 Y4M 的常見問題

這個 AVI 轉 Y4M 轉換器是免費的嗎？

是的。在這裡把 AVI 轉換為 Y4M 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 AVI 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.

AVI 轉 Y4M 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 AVI 轉換為 Y4M 會損失品質嗎？

No. Y4M stores its data losslessly, so everything in your AVI file is preserved exactly.

可以一次把多個 AVI 檔案轉換為 Y4M 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.

AVI 轉 Y4M 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 Y4M

這裡有 21 種格式可以轉換成 Y4M。

將 AVI 轉換為其他格式

一個 AVI 檔案可以轉換成以下任何一種格式。