[Windrider6]

I don't understand why you think that using Windows Print Screen in Windows will produce a better image than extracting the original image from the video file.  The "washed-out" images you complain about are probably the result of making a copy of the image, instead of using the original image.  If you extract the original image from the video file, it will be unaltered.  It will be the original size & quality of the video.  You can easily resize it if necessary.

In Avidimux (free program BTW), you can go forward or backward frame by frame, and quickly save the original images as they are in the video.  You can also quickly scroll to the locations in the video you want.  It is simple, certainly a lot easier than what you are trying to do now, and will produce better images.

Plus, if you use frame advance in Kodi and Windows Print Screen, you are going to see the playback controls overlaid on the image, as evidenced in the above posts.

Kodi is a great media library & player, and Windows Print Screen can be a useful tool, but nothing beats saving the original images.

If you see a picture on a webpage you like and want to save, do you use Windows Print Screen, or do you right-click on the picture and chose "Save Image As..."?  I would hope the latter, but I wonder.  This is a similar situation.