# note: The same plane with its last byte replaced.
# expect: reject
# roundtrip: no
# exercises: One byte, not a truncation: the stream is the right length and
#   stops making sense at the end. Together with alph-lossless-truncated this
#   pins both ways the compressed plane can fail.
chunks VP8X ALPH VP8
alpha 1
alph_compression 1
alph_data b90a44f43f40a46d333634ff920f4f23262099a5ff
width 16
height 16
yac_qi 30
macroblock
coeffs y2 -20
coeffs y[2] 1:5 -3