# note: A lossy frame and a lossless one in the same animation.
# expect: reject
# anim: ok
# info: ok
# exercises: Nothing ties the frames of an animation to one format. The
#   decoder re-reads the chunk tag per frame, so WebPDecode() switches
#   between VP8 and VP8L mid-sequence, and both write into the same RGBA
#   canvas.
frame
frame_duration 100
width 32
height 32
yac_qi 30
macroblock
coeffs y2 -20
frame
frame_duration 100
lossless
width 32
height 32
argb 0xff00c000 x1024