Hi, Gkv,
There are more advanced I3D and P3D pytorch impementations.
P3D: Learning Spatio-Temporal Representation with Pseudo-3D Residual,ICCV 2017

  
      
      GitHub
  
  
    

qijiezhao/pseudo-3d-pytorch 607

pseudo-3d-pytorch - pytorch version of pseudo-3d-residual-networks(P-3D),    pretrained model is supported


  
  
    
    
  
  


I3D: Quo Vadis, Action Recognition? A New Model and the Kinetics Dataset, CVPR 2017

  
      
      GitHub
  
  
    

hassony2/kinetics_i3d_pytorch 505

kinetics_i3d_pytorch - Inflated i3d network with inception backbone, weights transfered from tensorflow