Source code for moviepy.video.fx.scroll
[docs]def scroll(
clip, w=None, h=None, x_speed=0, y_speed=0, x_start=0, y_start=0, apply_to="mask"
):
"""
Scrolls horizontally or vertically a clip, e.g. to make end credits
Parameters
----------
w, h
The width and height of the final clip. Default to clip.w and clip.h
x_speed, y_speed
x_start, y_start
apply_to
"""
if h is None:
h = clip.h
if w is None:
w = clip.w
x_max = w - 1
y_max = h - 1
def filter(get_frame, t):
x = int(max(0, min(x_max, x_start + round(x_speed * t))))
y = int(max(0, min(y_max, y_start + round(y_speed * t))))
return get_frame(t)[y : y + h, x : x + w]
return clip.transform(filter, apply_to=apply_to)