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Local processing
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Make MP4 Start Faster

Move MP4 initialization metadata to the front of the file for progressive web playback without changing media quality.

Related tasks

These tools work with the same files or solve a common next step. Choose the result you actually need.

Extract Audio from Video

Take the main audio track from an MP4 or MOV and save it as M4A, copying compatible audio without re-encoding.

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Mute Video

Remove audio tracks from an MP4 or MOV and keep compatible video data unchanged in a new MP4.

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Convert MP4 to MP3

Decode the main audio track from an MP4 or MOV and encode a standard MP3 file for listening or sharing.

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Trim Video

Choose a start and end time, preview the actual keyframe-safe interval, and save a trimmed MP4 without re-encoding compatible tracks.

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