$ synfig --scene-info ./sample.sifz
time_start=0s
time_end=5s
frame_rate=24
frame_start=0
frame_end=120
x_res=2834.65
y_res=2834.65
tl=-4 2.25
br=4 2.25
w=480
h=270
grid_show=0
grid_size=0.250000 0.250000
grid_snap=1
guide_show=1
guide_snap=0
onion_skin=1