# note: One frame of zero milliseconds and one of the longest the field can
#   say.
# expect: reject
# anim: ok
# info: ok
# exercises: Both ends of the 24-bit duration field in one file. Neither is
#   refused: a zero-duration frame is legal and common as an interstitial,
#   and 0xffffff is just under MAX_DURATION, so nothing in the field's range
#   is out of range. The durations accumulate into the timestamp anim_dump
#   reports, and change no pixel.
frame
frame_duration 0
lossless
width 16
height 16
argb 0xff800000 x256
frame
frame_duration 16777215
lossless
width 16
height 16
argb 0xff008000 x256