def get_extra_loss(self,
                     latent_means=None, latent_stds=None,
                     true_frames=None, gen_frames=None):
    """Losses in addition to the default modality losses."""
    del true_frames, gen_frames
    return self.get_kl_loss(latent_means, latent_stds)
Losses in addition to the default modality losses.
tensor2tensor/models/video/sv2p.py