Caixas MP4
Substitui caixas de metadados compatíveis por caixas livres do mesmo tamanho.
MP4 · On-device
MP4 video metadata remover
Replace supported MP4 metadata boxes with same-size free boxes while preserving video data offsets.
- 1Escolha um MP4
- 2Limpe as caixas
- 3Transfira o MP4
Processado no seu dispositivo — os ficheiros originais não são enviados ao nosso servidor.
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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.
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Uma única etapa de processamento
Informações de MP4 processadas
Preserva os deslocamentos
As posições dos bytes de vídeo não são alteradas.
Verifique a reprodução
Abra novamente a cópia transferida antes de a utilizar num projeto.
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Fluxo de trabalho recomendado
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.
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Guia aprofundado
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.
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Guia aprofundado
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.
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FAQ
Perguntas frequentes
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.
Limpe os metadados do MP4.
Sem conta. Processado no seu dispositivo.
Começar