FFmpeg Agent Skill

An agent skill that helps AI coding agents like Claude Code, Codex, Cursor, and Gemini build correct FFmpeg commands for media-processing tasks.

It turns a categorized cheatsheet of vetted FFmpeg recipes into a reference an agent can pick from instead of recalling commands from memory, where small ordering mistakes are easy to make.

It uses the [Agent Skills](https://agentskills.io/home) format, so it works smoothly with Claude Code, Codex, Gemini, Cursor, and more.

What It Covers

• Format conversion - remux MP4 / MKV / MOV, encode to AVI, change containers without re-encoding
• Resize and pad - aspect-ratio-preserving scale with letterboxing for vertical and horizontal targets
• Trim and seek - frame-accurate output seeking vs fast keyframe input seeking
• Audio processing - replace, extract, mix, crossfade, normalize, downsample, stereo-to-mono
• Advanced editing - playback speed without pitch shift, jump cuts, drawtext overlays, subtitle burn-in, watermarking, vstack, intro/main/outro assembly
• Asset generation - image-to-video, slideshow with xfade, Ken Burns zoompan, looping GIFs, scene-change thumbnails, tiled storyboards
• Encoding and tuning - daily-use libx264 template, CRF guidance, libx265 with hvc1 for Apple, libvpx-vp9 for the web, +faststart, hardware-accelerated transcode (h264_nvenc, h264_qsv, VAAPI)
• Glossary - flag and filter syntax, stream selectors ([0:v], [1:a]), -map, -c copy