How to View the ffmpeg Manual Page on macOS

Learn how to easily access and navigate the offline ffmpeg manual page on macOS. This guide covers the standard Terminal command to open the documentation, essential navigation shortcuts, and troubleshooting steps in case the manual page is missing from your system.

Opening the ffmpeg Manual Page

To view the manual page for ffmpeg on macOS, you will need to use the Terminal application. Follow these steps:

Open the Terminal app (press Cmd + Space, type “Terminal”, and press Enter).
Type the following command and press Enter:

man ffmpeg

This command opens the built-in reference manual for ffmpeg, containing detailed information on syntax, arguments, filters, and global options.

Navigating the Manual Page

Once the manual page is open, you can navigate through the document using these standard keyboard shortcuts:

Scroll Down: Press the Down Arrow key, Return key, or Spacebar.
Scroll Up: Press the Up Arrow key or B key.
Search for a Term: Press the / (slash) key, type your search term (e.g., /codec), and press Enter.
Next Search Result: Press N.
Previous Search Result: Press Shift + N.
Quit the Manual: Press Q to exit and return to the standard Terminal prompt.

Troubleshooting: “No manual entry for ffmpeg”

If you see an error stating “No manual entry for ffmpeg,” it means ffmpeg is either not installed or the manual pages were not linked during installation.

1. Install ffmpeg via Homebrew

The easiest way to install ffmpeg along with its manual pages on macOS is through Homebrew. Run the following command to install it:

brew install ffmpeg

Homebrew automatically links the documentation to your system’s default man path.

2. Use the Built-in Help Command

If you cannot access the manual page, you can view the command-line help directly from the ffmpeg binary. Run one of the following commands:

For a basic overview of options:
```
ffmpeg -h
```
For advanced options:
```
ffmpeg -h long
```
For the full list of options (including formats, codecs, and filters):
```
ffmpeg -h full
```