# note: A second VP8X chunk after the frames have started.
# expect: reject
# anim: reject
# info: reject
# exercises: The one fourcc the chunk walk refuses on sight. VP8X is the
#   header that started the walk and it carries the canvas size and the
#   feature flags, so a second one would be re-declaring what has already
#   been acted on; the walk returns an error rather than picking either.
chunks VP8X ANIM ANMF VP8X
frame
frame_duration 100
lossless
width 16
height 16
argb 0xff800000 x256