Best video compressor for mac to reduce the file size of video?

This method requires you to install FF mpeg and run commands. It is the most direct and challenging path.

How to compress mp4 video on mac:

Step 1: Install FF mpeg

Open the Terminal app.
Install Homebrew (a package manager) if you don't have it, by pasting this command:

/bin/bash -c "$(curl -fsSL https//raw,githubusercontent,com/Homebrew/install/HEAD/install.sh)"

Once Homebrew is ready, install FF mpeg:

brew install ff mpeg

Step 2: Run a Compression Command
Navigate to the folder containing your video in Terminal (using the cd command) and then run the basic compression command:

ff mpeg -i input.mp4 -c:v libx264 -crf 23 -preset medium -movflags +faststart -c:a aac -b:a 128k output.mp4

Here's what the key parameters do:

• -i input.mp4: Your original video file.
• -c:v libx264: Uses the H.264 video codec, which is widely compatible.
• -crf 23: Controls quality. Lower numbers (18-23) mean higher quality and larger files. Higher numbers (23-28) mean smaller files with a slight quality drop. This is the most important setting if you are going to compress mp4 video on mac.
• -preset medium: Balances encoding speed and file size. Use fast or ultrafast to speed up the process.
• -c:a aac -b:a 128k: Converts audio to AAC at 128 kbps.