FFmpeg

Use this skill to produce reliable, explainable FFmpeg/FFprobe commands for media automation.

Workflow

Identify the user's source media, desired output container/codec, target dimensions/duration, and whether quality, speed, or file size matters most.
Prefer the simplest command that meets the goal.
Use -c copy only when no filtering, re-encoding, precise trimming, subtitle burn-in, compression, or codec change is needed.
Use explicit stream mapping when multiple inputs or outputs are involved.
For commands with filters, quote the filter graph and name streams in filter_complex when it improves readability.
Include -y only when the user wants non-interactive overwrite behavior.
Validate command intent with ffprobe or a low-duration sample when practical.