Organizing an online webcam on vlc videolan?

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Organized online webcam on vlc video lan. Previously, everything worked, tobish adjusting the brightness of the contrast, etc. Now the adjustment of these parameters has stopped working (even the logo has disappeared).
But there is one "BUT" after adding the line

sfilter={logo{file=C:\LOGO.png,x=1000,y=5,opacity=200}}

earned a logo, and even began to be regulated. Here's what I think, if there is a brightness and contrast parameter, put it into autoload so that everything works. Google searched all over, did not find the answer, only the logo code.