ramiro@raspberrypi:~/code/ffmpeg/build $ grep movk ../ffmpeg/libswscale/aarch64/range_convert_neon.S
        movk            w3, #\offset >> 16, lsl #16
        movk            w3, #\offset >> 16, lsl #16
ramiro@raspberrypi:~/code/ffmpeg/build $ make checkasm
AS	libswscale/aarch64/range_convert_neon.o
src/libswscale/aarch64/range_convert_neon.S: Assembler messages:
src/libswscale/aarch64/range_convert_neon.S:96: Error: immediate out of range
src/libswscale/aarch64/range_convert_neon.S:97: Error: immediate out of range
make: *** [/home/ramiro/code/ffmpeg/ffmpeg/ffbuild/common.mak:93: libswscale/aarch64/range_convert_neon.o] Error 1