This is the strace
$ strace -e trace=openat,close,fstat gst-launch-1.0 icamerasrc ! autovideosink 2>&1 | grep -E "media0|close(4)|close(5)|fstat(4|fstat(5" | head -20
fstat(4, {st_mode=S_IFDIR|0755, st_size=100, ...}) = 0
close(4) = 0
fstat(4, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
close(4) = 0
fstat(4, {st_mode=S_IFDIR|0755, st_size=6580, ...}) = 0
close(4) = 0
close(4) = 0
openat(AT_FDCWD, "/dev/media0", O_RDWR) = 4
openat(AT_FDCWD, "/dev/media0", O_RDWR) = 5
close(5) = 0
close(4) = 0
close(4) = 0
close(4) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=31376, ...}) = 0
close(4) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=451152, ...}) = 0
close(4) = 0
This is the strace