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video-editing

Edit video files with FFmpeg for trimming, merging, subtitles, effects, and platform reformatting.

Updated Apr 20, 2026
Search Tags:#subtitles#ffmpeg#video editing#reframe#tiktok#trim#virality scoring
One-click install
npx skills add https://github.com/AmirEmad11/instabot --skill video-editing-amiremad11
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: video-editing
Source: https://github.com/AmirEmad11/instabot/tree/main/.local/secondary_skills/video-editing
Command: npx skills add https://github.com/AmirEmad11/instabot --skill video-editing-amiremad11

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires fluent-ffmpeg, multer, openai, and includes references (resource) components.

What problem does it solve? Editing videos server-side normally requires manual FFmpeg command knowledge and repetitive scripting. This Skill handles the full video editing workflow — from trimming and merging to AI-powered highlight detection and social media reformatting — so users can process videos through natural language requests. ## Core Features & Use Cases - Core Editing Operations: Trim, cut, merge, concatenate, add transitions, text overlays, subtitles, watermarks, and logo overlays using FFmpeg with H.264, H.265, VP9, and AV1 codec support. - Audio & Voiceover Workflows: Mix background music, extract or replace audio tracks, and generate AI voiceovers through the ElevenLabs integration. - AI-Powered Analysis: Score video segments or clips for virality potential using OpenAI or Gemini vision models, then auto-trim the best moments or assemble highlight reels. - Social Media Pipeline: Remove dead space, chunk long videos into platform-length clips, and reframe to platform-native aspect ratios (9:16 for TikTok/Reels/Shorts, 1:1 for Instagram Feed, 16:9 for YouTube). - Use Case: Upload a 10-minute recorded talk and ask for TikTok clips — the Skill removes silence, splits the video at natural break points into 10-45 second clips, scores each clip with AI, and reframes everything to 1080x1920 vertical format ready for posting. ## Quick Start Upload a video file and ask the assistant to trim it, add subtitles, or break it into TikTok-ready vertical clips.

Frequently Asked Questions about video-editing

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

FAQPage Schema
How do I trim a video with FFmpeg?▼

Use ffmpeg with -ss for start time and -to for end time, plus -c copy to avoid re-encoding. For frame-accurate cuts, re-encode with -c:v libx264 -c:a aac instead of stream copy.

How to convert a landscape video to vertical for TikTok?▼

Use FFmpeg's filter_complex with a blurred fill strategy: scale a blurred copy to 1080x1920 as background, scale the original to fit, and overlay it centered. This looks better than black bars for 16:9 to 9:16 conversion.

Can FFmpeg remove silence from video automatically?▼

The silenceremove filter only strips audio silence without cutting video frames. For proper dead space removal, use silencedetect to find silent intervals, extract the non-silent segments, and concatenate them back together.

Does this video editing approach support GPU acceleration?▼

No, Replit containers lack GPU access, so hardware encoders like NVENC and VAAPI are unavailable. Use software encoding with libx264, libx265, or libvpx-vp9, and prefer stream copy for large files.

Why does FFmpeg scene detection fail with ffprobe?▼

The ffprobe -f lavfi approach does not work reliably in Replit. Instead, run ffmpeg with select='gt(scene,threshold)' and showinfo filters, then parse pts_time values from stderr output.

What are the limitations of server-side FFmpeg video editing?▼

There is no real-time preview since FFmpeg processes offline, 4K encoding may hit memory limits, and disk space must be managed for large files. Generate short preview segments instead of live playback.

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