code: def forward(self, input, timesteps, skip_video=False):
      x = super().forward(input)
      if skip_video:
          return x
      x = rearrange(x, "(b t) c h w -> b c t h w", t=timesteps)
      x = self.time_mix_conv(x)
      return rearrange(x, "b c t h w -> (b t) c h w")
  
imports: from typing import Callable, Iterable, Union
  import torch
  from einops import rearrange, repeat
  from sgm.modules.diffusionmodules.model import XFORMERS_IS_AVAILABLE, AttnBlock, Decoder, MemoryEfficientAttnBlock, ResnetBlock
  from sgm.modules.diffusionmodules.openaimodel import ResBlock, timestep_embedding
  from sgm.modules.video_attention import VideoTransformerBlock
  from sgm.util import partialclass
label_desc: Use image node_id 2 for calling the AE3DConv obj's underlying member method code with example usage: obj.forward(input, timesteps, skip_video) and returns: rearrange, x