Deoldify Vapoursynth filter

[Dan64]

These python outputs might be the root of the problem,...

I will release a version where these warning will be removed.
It is just enough to add in __init__.py the following code

warnings.filterwarnings("ignore", category=UserWarning, message="Arguments other than a weight enum or `None`.*?")
warnings.filterwarnings("ignore", category=UserWarning, message="torch.nn.utils.weight_norm is deprecated.*?")

I already tested it and the warning are fully removed.

But the encoding problem is due to "y4m" formatting.

Dan