MP4 資料盒
將支援的中繼資料盒替換為大小相同的 free 盒。
MP4 · On-device
MP4 video metadata remover
Replace supported MP4 metadata boxes with same-size free boxes while preserving video data offsets.
- 1選擇 MP4
- 2清理資料盒
- 3下載 MP4
在您的裝置上處理；原始檔案不會上傳至我們的伺服器。
01
MP4 · On-device
Clean boxes while preserving offsets
MP4 files contain structural boxes. This tool replaces supported udta, meta and ilst metadata boxes with same-size free boxes, leaving all media byte offsets unchanged.
It does not re-encode video or audio. Open and play the downloaded copy before publishing.
02
單次處理
處理的 MP4 資訊
保留位移量
影片資料的位元組位置不會移動。
確認播放效果
在專案中使用前，請開啟下載的副本。
03
建議的操作流程
An MP4 verification workflow
1
Choose an MP4
Use a file below 15 MB.
2
Make a clean copy
Replace supported metadata boxes without shifting other boxes.
3
Play it back
Verify duration, picture and sound in the download.
04
深入指南
Why MP4 offsets must stay fixed
MP4 index tables refer to byte positions of audio and video samples. Replacing supported metadata with same-size free boxes leaves those positions unchanged.
05
深入指南
Verify the cleaned video
Play the new file from start to finish and check its sound. Metadata in unsupported structures or within frames may remain.
08
FAQ
常見問題
Is the video uploaded?
No. It is processed on your device.
Is video re-encoded?
No. Audio and video payload stays at the same byte offsets.
Does it remove all MP4 metadata?
No. Only supported boxes; some UUID or track-specific data can remain.
Should I test playback?
Yes. Play the downloaded copy and verify sound, picture and duration.
Can it remove a video watermark?
No. A watermark in a frame is not an MP4 metadata box.
清理 MP4 中繼資料。
無須帳號。在您的裝置上處理。
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