SkillsLib.ai

Video Edit

Edit videos locally with ffmpeg commands—trim, concat, resize, compress, and convert

3.6(14 reviews)
10+ downloads
Updated Oct 2026
Verified SafeSecurity VerifiedThis skill was analyzed by our AI security scanner for harmful content including data exfiltration, system manipulation, credential theft, and prompt injection. No threats were detected.

What You Can Do

You can perform professional-grade video editing operations entirely on your machine using ffmpeg. Cut segments from videos, join multiple clips together, resize for social platforms (TikTok, Instagram, YouTube), adjust playback speed, extract or replace audio tracks, compress files for storage, and convert between formats—all with copy-paste ffmpeg commands that Claude generates based on your specific requirements.

Features

Trim and cut video segments with precise timestamp control
Concatenate multiple video clips into a single file
Resize videos with aspect ratio preservation for specific platforms (Instagram, TikTok, YouTube)
Adjust playback speed for videos and audio independently
Extract audio from video or replace audio tracks entirely
Compress videos with configurable quality/file-size trade-offs
Convert between video formats (MP4, MOV, WebM, MKV, etc.)
Retrieve detailed video metadata (resolution, codec, duration, bitrate)

Example Output

Example 1: Trim a video

code
ffmpeg -y -ss 00:00:30 -to 00:01:45 -i video.mp4 -c copy trimmed.mp4

Creates a 1-minute 15-second clip starting at 30 seconds into the original video.

Example 2: Resize for TikTok

code
ffmpeg -y -i video.mp4 -vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black" tiktok.mp4

Resizes to 1080×1920 with black letterboxing to maintain aspect ratio.

Example 3: Concatenate clips

code
printf "file '%s'\n" clip1.mp4 clip2.mp4 clip3.mp4 > list.txt
ffmpeg -y -f concat -safe 0 -i list.txt -c copy joined.mp4

Joins three video files seamlessly into a single output.

What's Included

  • SKILL.md: complete ffmpeg reference with command templates for all operations
  • Video operation quick-start: ready-to-use commands for trim, concat, resize, speed, audio extraction, compression, and format conversion
  • Platform-specific presets: pre-configured ffmpeg filters for TikTok (1080×1920), Instagram Reels, YouTube, and standard formats
  • Metadata inspection guide: ffprobe commands to analyze video properties before editing
  • Compression and quality reference: CRF (quality) and preset (speed) parameters for optimal file size vs. visual quality

Who It's For

  • Video editors and content creators working with local files and avoiding cloud uploads
  • Social media managers preparing video content for multiple platforms with different aspect ratios
  • Podcast producers and audio engineers who need to extract or replace audio tracks
  • Developers integrating video processing into automation workflows or batch scripts
  • Media professionals handling file compression, format conversion, and metadata inspection

Best For

  • Batch processing multiple videos with consistent edits or formatting
  • Converting video files between formats or platforms without quality loss
  • Trimming long recordings into clips for social media or clips channels
  • Optimizing file size while maintaining acceptable quality for distribution
  • Extracting audio from videos or syncing replacement audio tracks

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