Video Cutter
Choose a start and end time, preview the range, and cut it here. Your video stays on your device.
You can paste seconds too, such as 83.5.
Advanced: speed and output format
How it works
Exact cuts use the browser's media codecs in a dedicated worker. The source is read in small ranges and, when your browser supports direct saving, the finished MP4 is streamed to the file you choose. FFmpeg is loaded only if you select Fast copy. Your video is not sent to formatdeck or another processing service.
Exact by default
The default produces a broadly compatible MP4 with the exact boundaries you selected. If speed matters more than an exact first frame, the Advanced option can copy the original streams without re-encoding them.
Browser limits
On browsers with direct file saving, neither the full source nor the finished clip is held in RAM: input reads use a small cache and output is written in bounded chunks. Other browsers use a guarded in-memory download fallback and will ask for a shorter range if the estimated clip is unsafe.
Questions
Does my video get uploaded?
No. The file is read from your device into this browser tab and processed locally. Only normal page and analytics requests use the network; the video bytes are never sent with them.
Why is precise mode slower?
It decodes and re-encodes the selected frames so the clip can begin at the exact time you chose. Fast mode avoids that work by copying the original streams.
Can Subtitle Doctor choose the range?
Yes. A range selected in Subtitle Doctor can open this page with the start and end fields filled in. You then choose the matching video locally, so the video itself never travels between the sites.