# Lossless Video Trimmer (Keyframe Cut) — yeezhan.com
> One-time pay-per-task emergency tool to make your file ready for submission.
> No credits, no balance. One payment unlocks one task result, valid for 24 hours.

Tool domain: https://video-clip-lossless.yeezhan.com
Skill definition: https://video-clip-lossless.yeezhan.com/skill/SKILL.md
API documentation: https://video-clip-lossless.yeezhan.com/api/docs

## What this tool does
Cut a segment out by timestamps with no re-encode — instant and bit-identical quality.

## Typical user problems
- Re-encoding a cut costs minutes and one generation of quality loss. Cutting at the container level copies the original packets between two timestamps — instant output with untouched quality. Cuts snap to keyframes, so the exact boundaries can shift slightly.

## Parameters
- start_sec: number (range 0+s), required. 开始时间
- end_sec: number (range 0+s), required. 结束时间

## Pricing
- Watermarked preview: free, no login required
- Final clean output: $0.99 one-time per task
- Require login (email/phone OTP) to complete payment
- Result available for download 24 hours after payment

## Limitations
- Max 200 MB
- Keyframe-aligned: boundaries may shift by up to one GOP