video-extraction

name	video-extraction
description	Use this skill to extract keyframes from video files using FFmpeg. It covers selecting the right extraction frequency and naming conventions for image sequences.

Video Extraction Skill

This skill provides instructions for extracting keyframes from video files (e.g., MP4) using ffmpeg.

Prerequisites

• ffmpeg must be installed in the environment.

Extraction Commands

To extract keyframes from a video file:

ffmpeg -i input_video.mp4 -vf "select='eq(pict_type,PICT_TYPE_I)'" -vsync vfr output_prefix_%03d.png

• -i input_video.mp4: Specifies the input video file.
• -vf "select='eq(pict_type,PICT_TYPE_I)'": Filters for I-frames (keyframes).
• -vsync vfr: Variable frame rate, ensures only selected frames are output.
• output_prefix_%03d.png: The output filename pattern.

Naming Convention

For this task, use the following pattern: /root/keyframes_%03d.png

Verification

After extraction, list the files in the output directory to confirm they were created.