FFmpeg Complete Guide for Developers

A complete developer-oriented guide to FFmpeg basics: probing files, transcoding, trimming, scaling, extracting audio, and creating HLS outputs.

FFmpeg is the Swiss-army tool of media engineering. Developers use it to inspect, convert, compress, segment, crop, scale, mux, demux, and stream media files.

The first command to learn is ffprobe. It tells you codecs, duration, resolution, bitrate, audio tracks, subtitles, and container metadata.

Common FFmpeg jobs include converting MP4 formats, resizing video, extracting thumbnails, normalizing audio, trimming clips, and generating HLS segments with playlists.

The key mental model is codecs versus containers. MP4 is a container; H.264, H.265, AAC, and Opus are codecs. Good media workflows keep that distinction clear.