Free Online Video Trimmer

Accuracy depends on whether the tool can use a fast stream copy path or must transcode. When copying is possible, start points may align to keyframe-related boundaries in the file — often a fraction of a second, but it can be larger for heavily compressed sources. When transcoding is required, timing can be matched much more tightly to the range you choose.

When no re-encoding is required, quality remains identical because the compressed samples are not regenerated. When transcoding is required, quality depends on encoder settings and your source material — the processing still happens locally in your browser.

Fast copy-style paths can feel nearly instantaneous even for large files. Transcoding speed depends on your device CPU/GPU, video resolution, length, and browser support.