How to Monochrome, Haze video Effect in FFmpeg? I have a lots of searching but i coudn't find the FFMPEG command for Monochrome effect and Haze Effect on video.
Orignal

Haze Effect

Monochrome Effect  (This is not sepia effect)

Your help would be appreciated.
Monochrome

 

One method is to use the hue filter to desaturate.

ffmpeg -i input -vf hue=s=0 -c:a copy output
ffplay -vf hue=s=0 input


De-haze (increase contrast)

 

The curves filter has several presets including a few that increase contrast. You can also make your own curves in Photoshop, export the ACV file and use it via the psfile option in the curves filter.

ffmpeg -i input -vf curves=preset=increase_contrast -c:a copy output
ffplay -vf curves=preset=increase_contrast input