video-trimmer

Trim video segments to exact start and end times using FFmpeg.

Updated Jan 30, 2026
One-click install
npx skills add https://github.com/akrindev/trimer-clip --skill video-trimmer
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: video-trimmer
Source: https://github.com/akrindev/trimer-clip/tree/main/skills/video-trimmer
Command: npx skills add https://github.com/akrindev/trimer-clip --skill video-trimmer

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Trimming and clipping videos precisely to extract exact moments or remove unwanted sections is a common bottleneck in video workflows, especially when preparing highlights or social media clips.

Core Features & Use Cases

  • Precise trimming: cut video to exact start and end times with optional re-encoding for quality
  • Mode versatility: choose stream copy for speed or re-encode for frame-accurate results
  • Batch trimming: trim multiple segments from a single video using the trim_multiple workflow
  • Integration-ready: coordinates with other skills like portrait-resizer and subtitle-overlay for end-to-end workflows
  • Use Case: quickly extract a 15-second highlight from a long video and export as a standalone clip.

Quick Start

Provide a video file path, start time, and end time to generate a trimmed clip.

Frequently Asked Questions about video-trimmer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I trim a video by timestamp to extract highlights?

To trim a video by timestamp, provide the video file path, start time, and end time to generate a clean clip. The Skill uses FFmpeg to cut exactly the segments you need for your highlights.

What is the difference between stream copy and re-encode modes for video trimming?

Stream copy trims video quickly without re-processing, while re-encode mode ensures frame-accurate results. Choose stream copy for speed or re-encode when you need precise cuts at exact timestamps.

Can I cut multiple clips from a single video in one batch?

Yes, you can cut multiple clips from a single video using the batch-processing trim_multiple workflow. This allows you to extract several segments from one long video efficiently.

Does this video trimming tool require FFmpeg to be installed?

Yes, the video trimming tool requires FFmpeg because it relies on FFmpeg-based tools to process videos, validate inputs, and produce clean clips. It exposes script-level interfaces built on top of it.

Why does my trimmed video have inaccuracies at the start or end frames?

Video trimming inaccuracies at the start or end frames happen when using stream copy mode. Switch to re-encode mode to enforce frame-accurate cuts and ensure your clips start exactly at the specified timestamp.

What's the best way to automate extracting short clips from long videos?

The best way to automate extracting short clips is using script-level interfaces for single and multiple trims. The Skill enforces input validation and supports batch processing to automate clip creation.