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August 2, 2018 18:29
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Vapoursynth Animate
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| import functools | |
| import vapoursynth as vs | |
| def interp(a, b, c): | |
| s = (b - a) / c | |
| for _ in range(c): | |
| yield a | |
| a += s | |
| yield b | |
| def gen_interp(start, end, count): | |
| if isinstance(start, (list, tuple)): | |
| lists = [] | |
| for start_ele, end_ele in zip(start, end): | |
| lists.append(gen_interp(start_ele, end_ele, count)) | |
| return zip(*lists) | |
| if isinstance(start, (int, float)): | |
| # can be interpolated | |
| interped = interp(start, end, count) | |
| if isinstance(start, int): | |
| # round to integers | |
| interped = map(functools.partial(round, ndigits=None), interped) | |
| else: | |
| interped = [start] * (count + 1) | |
| return interped | |
| def Animate(c, start_f, end_f, filter_ref, start_args=[], end_args=[], start_kwargs={}, end_kwargs={}): | |
| if start_f >= end_f: | |
| raise Exception() | |
| frames = end_f - start_f | |
| args = [[[] for __ in range(len(start_args))] for _ in range(frames + 1)] | |
| for i, start_arg, end_arg in enumerate(zip(start_args, end_args)): | |
| for frame, inter in enumerate(gen_interp(start_arg, end_arg, frames)): | |
| args[frame][i] = inter | |
| kwargs = [{} for _ in range(frames + 1)] | |
| for (startk, startv), endv in zip(start_kwargs.items(), end_kwargs.values()): | |
| for frame, inter in enumerate(gen_interp(startv, endv, frames)): | |
| kwargs[frame][startk] = inter | |
| def animate(n, clip): | |
| if n < start_f or n > end_f: | |
| return clip | |
| return filter_ref(clip[n], *args[n-start_f], **kwargs[n-start_f]) | |
| return vs.core.std.FrameEval(c, functools.partial(animate, clip=c)) |
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Nice! Much better than Stux's!