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Showing gamma correction value in usual form

Posted: 20 Jun 2014 01:50
by konstantin_hu
I would like to know/ask for, how can I determine the accurate value of applied gamma correction (when it is set on Tools/Effect and Filters/Video Effects/Image Adjusts/Gamma). The usual value in video processing applications is in range 0.0-1.0-2.0, for example 1.2

I would like to preview videos with gamma correction applied, and then encode them with ffmpeg CLI application, setting the determined value.