def __call__(self, clip):
        """
        Args:
            clip (torch.tensor): Size is (C, T, H, W)
        Return:
            clip (torch.tensor): Size is (C, T, H, W)
        """
        if random.random() < self.p:
            clip = tflip(clip)
        return clip

        Args:
            clip (torch.tensor): Size is (C, T, H, W)
        Return:
            clip (torch.tensor): Size is (C, T, H, W)
        
dataset/transforms.py