Video Compressor
Re-encode a small video as MP4 using an adjustable quality level.
Video & audioVideo & audio tools
Video Trimmer
Export a selected section of a video as an MP4.
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How to use video trimmer
- Choose a video file with readable duration metadata.
- Set Start time and Duration to export within the source, then select Process media.
- Compare playback and download the trimmed MP4.
Work through an example
Calculate a valid clip interval, understand the duration field, and review a re-encoded MP4 before sharing it.
Trim a video using a start time and export duration →Formats, privacy, and practical limits
Desktop browsers recommended. Maximum input 50 MB. First use downloads a roughly 32 MB processing engine. Processing can be slow and memory intensive; keep this tab open. Output size reduction is not guaranteed.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Is this a lossless cut without re-encoding?
No. It re-encodes an H.264/AAC MP4, so quality and metadata can change.
How is an out-of-range trim handled?
The tool reads the source duration and rejects a start or duration extending beyond the input rather than silently claiming success.