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What this tool does

Cut out parts removes one or more unwanted time ranges and keeps the rest of an audio or video file. Use it for pauses, delays, private details, mistakes, or short sections that should not appear in the final export.

Unlike trimming, this does not keep only one continuous range. It keeps the sections before and after each removed part, then joins them into one MP3 or MP4.

How browser processing works

The selected file is processed locally with FFmpeg WebAssembly. Audio is joined into MP3 in one pass; video uses temporary kept segments that are joined into an MP4.

Supported formats and output

Input

MP3 audio and browser-readable video files supported by the browser FFmpeg engine.

Output

MP3 or MP4 containing the original file minus the removed time ranges.

Practical examples

Quality considerations

• Use precise start and end times such as 5:36 and 5:49 for minute-second inputs.
• Because the kept parts are merged, the final video duration should be the original duration minus the removed ranges.

Limitations

• Video cuts are re-encoded for compatibility, so processing can take longer than a simple trim.
• Removing many ranges from a large file can use significant browser memory.
• If the source contains unusual audio or video codecs, export may fail in some browsers.