code: def frame_to_latents(frame, hparams):
    
    # Preprocess
    frame = preprocess_frame(frame)
  
    # Encode [X_t] to [z^1_t, z^2_t .. z^l_t]
    glow_vals = glow_ops.encoder_decoder(
        "codec", frame, hparams, eps=None, reverse=False)
    z_top, _, level_eps, _, _ = glow_vals
    return z_top, level_eps
docs: Encode frames to latents.