Edit local video files with ffmpeg, a command-line media tool. Trim and join clips, resize for social platforms, adjust playback speed, extract or replace audio, add image overlays, and export compressed or converted files.
Edit videos locally using ffmpeg. Trim, concat, resize, speed, overlay, extract audio, compress, and convert. Use when: (1) Trimming or cutting video segments, (2) Concatenating multiple clips, (3) Resizing video for social platforms, (4) Extracting or replacing audio, (5) Compressing video, (6) Converting video formats, (7) Getting video info.
Edit local video files with ffmpeg. Supported tasks include trimming a specified segment, joining clips, resizing, changing playback speed, extracting or replacing audio, compressing files, converting formats, and overlaying images. You can also use ffprobe to inspect the file format and information about its video and audio streams.
Use it to keep only the sections you need from a recording or combine several source clips into one video. Resolution examples cover TikTok, YouTube, and Instagram. The material also shows how to preserve the aspect ratio and add padding. Other uses include reducing file size for sharing and extracting just the audio from a video.
Install ffmpeg and its included tool, ffprobe. Installation examples cover macOS and Ubuntu/Debian. The supplied commands overwrite output files without confirmation. Compression settings let you balance image quality against file size.
This overview was written by AI (OpenAI Codex) from the public SKILL.md. Check the original below for the exact behavior.
AI rated this skill on four points using only the contents of its SKILL.md. Stars and popularity are not taken into account.
The total counts each point as A = 25, B = 15, C = 5. Rated by AI (OpenAI Codex) as of Oct 23, 2026. Treat it as a guide and read the original before installing.
Review the instructions the agent will receive before you install.
Edit videos locally by running ffmpeg/ffprobe directly. No wrapper scripts needed.
Install ffmpeg (includes ffprobe):
# macOS
brew install ffmpeg
# Ubuntu/Debian
sudo apt update && sudo apt install -y ffmpeg
# Verify
ffmpeg -version && ffprobe -version
ffprobe -v quiet -print_format json -show_format -show_streams video.mp4
ffmpeg -y -ss 00:00:30 -to 00:01:45 -i video.mp4 -c copy trimmed.mp4
# 1. Create a file list
printf "file '%s'\n" clip1.mp4 clip2.mp4 clip3.mp4 > list.txt
# 2. Concat with stream copy
ffmpeg -y -f concat -safe 0 -i list.txt -c copy joined.mp4
ffmpeg -y -i video.mp4 \
-vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black" \
-c:a copy tiktok.mp4
# 2x faster
ffmpeg -y -i video.mp4 -filter:v "setpts=0.5*PTS" -filter:a "atempo=2.0" fast.mp4
# 0.5x (slow motion)
ffmpeg -y -i video.mp4 -filter:v "setpts=2.0*PTS" -filter:a "atempo=0.5" slow.mp4
ffmpeg -y -i video.mp4 -vn -acodec libmp3lame audio.mp3
ffmpeg -y -i video.mp4 -i audio.mp3 -c:v copy -map 0:v:0 -map 1:a:0 -shortest output.mp4
ffmpeg -y -i video.mp4 -crf 23 -preset medium -c:a copy compressed.mp4
ffmpeg -y -i video.mov output.mp4
# Logo in top-right corner
ffmpeg -y -i video.mp4 -i logo.png \
-filter_complex "overlay=W-w-10:10" -c:a copy watermarked.mp4
| Platform | Resolution | Scale + pad filter |
|---|---|---|
| TikTok | 1080 x 1920 | scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black |
| YouTube | 1920 x 1080 | scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:black |
| 1080 x 1350 | scale=1080:1350:force_original_aspect_ratio=decrease,pad=1080:1350:(ow-iw)/2:(oh-ih)/2:black | |
| Square | 1080 x 1080 | scale=1080:1080:force_original_aspect_ratio=decrease,pad=1080:1080:(ow-iw)/2:(oh-ih)/2:black |
| Twitter/X | 1920 x 1080 | scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:black |
Use the filter with: ffmpeg -y -i input.mp4 -vf "<filter>" -c:a copy output.mp4
-y to overwrite output without prompting.-c copy when you only need to cut/join (no re-encoding, very fast).references/operations.md.No reviews yet. Tell others what you thought.
No login needed. Share how it worked for you, ask a question, or note where it did not run.
No comments yet. Be the first to write one.
Create 3D objects from text or images, choose catalog assets for repeated scenery, and inspect the results in Blender. The workflow checks geometry, materials, scale, and ground contact while recording asset sources and generation costs.
Generate background music and songs with lyrics using ACE-Step 1.5, with controls for duration, tempo, and musical key. You can also restyle reference audio and separate vocals or individual instruments from mixed tracks.
Build voice assistants and conversational characters with ElevenLabs. Configure voices, language models, and external tools, then connect conversations to a website widget or use Twilio integration for outbound phone calls.
Generate video clips from text descriptions or reference images through multiple API services. Compare available providers by cost and task needs, choose aspect ratios, track generation progress, and refine existing clips through conversational editing with Gemini Omni.
Create AI video clips from text or reference images, choosing among providers to match the task and budget. Supports vertical social videos, product photo animation, and conversational editing of existing clips with Gemini Omni Flash.
Generate and edit images and videos through Atlas Cloud using one API key across multiple model families. Choose supported models for each task, download the results, and retain details about the model, inputs, and estimated cost.