Video cut — trim by range with stream copy, no quality loss
Trim a video to a chosen range with ffmpeg.wasm using stream copy — no re-encoding, no quality loss, original codec and extension preserved. Cut points snap to the nearest keyframe so the start may shift slightly. Supports batch processing and a single ZIP download.
How to use
Drop the videos you want to trim. When parsed, start and end seconds are shown per video — enter the range you want to keep. Click Cut — ffmpeg.wasm uses stream copy to extract that range. No re-encoding, no quality loss. Batch processing and a ZIP download are supported.
FAQ
- Are videos uploaded?
- No. ffmpeg.wasm runs inside your browser; videos never leave your device.
- Why does my start point shift slightly?
- Stream copy can only start at keyframe (I-frame) boundaries, so cuts snap to the nearest keyframe. Frame-accurate cuts require re-encoding.
- Does the extension change?
- No, the original container format and extension are preserved.
- Can I cut and join multiple ranges?
- This tool extracts one range per video. Cut multiple ranges here, then combine them with the video merge tool.
Related tools
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Drop the audio track from a video using ffmpeg.wasm, keeping the original video codec and quality intact (stream copy, no re-encoding). Supports batch processing and a single ZIP download. Videos never leave your device.
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Subtitle Converter
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