Key Points:

• CRF 18 results in larger files because it prioritizes quality over compression.
• CRF 23 tends to reduce the file size by around 20–30% with minimal quality loss.
• CRF 28 and higher values result in smaller files, but visual artifacts may become noticeable, especially in high-motion scenes.

This table gives rough estimates, as actual file sizes can vary depending on the specific content of the video.