Downscaling a 1080p MKV file like Saw VI to 720p is a common way to save storage space while maintaining good visual quality. The most reliable free tools for this are HandBrake (best for a user-friendly interface) and FFmpeg (best for speed and technical precision). Option 1: HandBrake (User-Friendly Interface)

Run the Command: Open a command prompt (CMD) in the folder where your movie is located and use the following command:

Title: The Art of the Shrink: Converting Saw VI from 1080p to 720p MKV

Step 5: Start the Encode

Click "Start Encode." Depending on your computer's CPU, this process can take 30 minutes to a few hours.

Output: Saw_VI.720p.mp4 (approx 1.8 GB)