[FFmpeg-user] Is there an image viewer with FileSystemWatcher?

[Michael Koch]

Hello,

sometimes it's an iterative process to find the best parameters for a 
filter, especially when the filter changes brightness, contrast or colors:
1) Edit the filter parameters in the FFmpeg command line
2) Run FFmpeg
3) Open the output image in a viewer (normally I'm using IrfanView)
4) Realize that the output can be improved, close the image viewer and 
go back to step 1)

Is there any image viewer that automatically detects when the image is 
overwritten and then shows the new image? I mean without closing and 
re-starting the viewer.

Thanks,
Michael