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→Configuring global variables
<code>v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=GREY --stream-mmap --stream-count=-1 --stream-to=/dev/null</code>
<code>v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=GREY --stream-mmap --stream-count=-1 --stream-to=/dev/null</code>
Or：
<code>./yavta -c1000 --skip 0 -f Y8 -s ${WIDTH}x${HEIGHT} /dev/video0</code>
===== Save image to file =====
===== Save image to file =====