How to convert any video to MP4 (H.264 + AAC) — ffmpeg

You have a video in some odd format and need a file that plays everywhere: browsers, phones, editors.

ffmpeg -i input.avi -c:v libx264 -c:a aac output.mp4

FFmpeg Cheatsheet one-page card — 28 commands that actually work — The full one-page card — FFmpeg Cheatsheet. Get the complete cheatsheet on GitHub