Shrink, trim and reformat any video in seconds
FFmpeg is the free engine inside most video apps. A handful of copy-paste commands cover what creators pay online converters for: smaller files, vertical Reels versions, clean trims, burned-in captions, level audio, speed-ups, GIFs and MP3s.
- Clean trims, GIFs and audio pulled out of video
- Captions burned into the picture, voice levelled to the loudness Reels and YouTube expect, and 1.5x speed-ups with the audio still in sync
- A one-line batch loop that does a whole folder at once, on Windows, Mac or Linux
- Level 0 done (you can open a terminal and
cdinto a folder) - Any video file to practise on
Install FFmpeg
One command, from the builds that FFmpeg's own download page points to.
- Windows
winget install --id Gyan.FFmpeg -eMacbrew install ffmpegLinux (Ubuntu or Debian; Fedora: sudo dnf install ffmpeg)sudo apt install ffmpeg Open a new terminal and check it:
Terminalffmpeg -versionOutputffmpeg version 9.0.2-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developersTipPut your video in its own folder, thencdinto that folder before running anything. Every command below reads and writes files in the folder you're in.TipLong file names with spaces are easy to get wrong. Drag the file from your file manager and drop it onto the terminal window: it pastes the full path for you, correctly quoted.
ffmpeg -version prints a version number.