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Run2 video frame extraction

Skill cxcscmu/SkillLearnBench/skills/b2-self-feedback-gemini-3.1-flash-lite-preview/video-object-counting/run2_video-frame-extraction

Extracts all key frames from a video file into a specified output directory using FFmpeg.From its SKILL.md

Install
npx -y skills add cxcscmu/SkillLearnBench --skill run2_video-frame-extraction

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

SKILL.md

0.8 KB, 172 tokens by cl100k_base, as published. Nobody here has run it

Overview

This skill extracts keyframes (I-frames) from video files into individual PNG files. This is useful for object detection over time.

Usage

To extract keyframes as PNG files, use the following command:

ffmpeg -i <input_file> -vf "select='eq(pict_type,PICT_TYPE_I)'" -fps_mode vfr -vsync vfr /root/keyframes_%03d.png
  • -i: Input video file.
  • -vf "select='eq(pict_type,PICT_TYPE_I)'": Select only I-frames.
  • -fps_mode vfr: Specifies variable frame rate mode for keyframes.
  • -vsync vfr: Maintains synchronization by setting variable frame rate.
  • /root/keyframes_%03d.png: Output filename pattern.

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

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