Computer SoftwareVideo Softwareffmpeg ffmpeg fun - Mirroring and other misc Updated May 28 2026
ffmpeg show devices
ffplay.exe -list_devices true -f dshow -i dummy

Mirror screen from webcam (change 'Integrated Webcam' to your camera listed from above command'):
ffplay -f dshow -i video="Integrated Webcam" -vf "crop=iw/2:ih:0:0,split[left][tmp];[tmp]hflip[right];[left][right] hstack"


Semi matrix like with hard edges cycling through colors

Copy to Clipboard ffplay -f dshow -video_size 640x360 -i video="Integrated Webcam" -vf "split[w1][w2];[w1]hqdn3d=4:3:6:4,median=radius=3,unsharp=5:5:1.0:5:5:0.0,edgedetect=low=0.03:high=0.09,format=bgr24,lutrgb=r=val:g=0:b=0[edges_red];[w2]geq=r='0':g='0':b='0'[bg_black];[bg_black][edges_red]blend=all_mode=addition,hue=h='t*36':s=3,scale=1920:1080:flags=neighbor,hflip" -fs


Semi matrix like with hard edges cycling through colors, with added brightness setting to adjust it.
Copy to Clipboard ffplay -f dshow -i video="MTD camera" -vf "scale=640:360,split[w1][w2];[w1]hqdn3d=4:3:6:4,median=radius=3,unsharp=5:5:1.0:5:5:0.0,eq=brightness=0.0:contrast=1.0,edgedetect=low=0.03:high=0.09,format=bgr24,lutrgb=r=val:g=0:b=0[edges_red];[w2]geq=r='0':g='0':b='0'[bg_black];[bg_black][edges_red]blend=all_mode=addition,hue=h='t*36':s=3,scale=1920:1080:flags=neighbor,hflip" -fs




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