gcc -O2 -std=gnu2x -Wall -Wextra -Wpedantic -Werror v4l2-capture.c -o v4l2-capture -lpthread
./v4l2-capture
./v4l2-capture ovideo.raw
gst-launch-1.0 filesrc location=demo.raw ! videoparse width=1280 height=960 format=4 interlaced=true ! autovideosink