Will the video be cut at exactly the selected time?
The range is set in 0.1-second steps and re-encoded. Actual scene boundaries still follow the source frame rate, so a time between frames resolves to the nearest available video frame.
Why can a shorter result still be larger than expected?
File size depends on duration, source compression, motion, resolution, and the selected output quality. Re-encoding an already highly compressed source at High quality may produce a smaller-than-expected size reduction.
Are MOV, WEBM, and MPEG inputs exported as MP4?
Yes. Supported inputs are exported as H.264/AAC MP4. A listed extension does not guarantee that every unusual internal codec or damaged file can be decoded.
Can I trim a video with no audio track?
Yes. The video track is required, while audio is included only when present, so silent videos can also be trimmed.
Will every 400MB video work?
400MB is an input ceiling, not a stability guarantee. The browser may hold the source, working data, and output together, so files under 300MB are recommended on desktop and smaller files on mobile.