4:3 aspect ratio markers
Markers are provided for the 4:3 aspect ratio. These markers support both 17:9 (4096×2160 or 2048×1080)
and 16:9 (3840×2160, 1920×1080, or 1280×720) source inputs.
● 4:3 extraction: shows the 4:3 region within the 17:9 or 16:9 frame.
● 4x3 action safe: shows the action safe area within 4x3 as dened by SMPTE RP 218. This area is dened
as a box 5% inward from each edge of the image, or a centered area of 2592×1944 pixels (for
4096×2160 or 3840x2160 source inputs).
● 16:9 title safe: shows the title safe area within 16:9 as dened by SMPTE RP 218. This area is dened as
a box 10% inward from each edge of the image, or a centered area of 2304×1728 pixels (for 4096×2160
or 3840×2160 source inputs).
The following illustration shows the 16:9 safe action and safe title markers displayed on-screen.
Working with markers 31
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