Is only the last layer of the edited frame processed?

[gladzhang]

Thanks for your nice work! I have two questions. The first question, the paper mentioned that each layer of the key frames has been processed. So, when editing the original video frame, is every layer also processed, or is only the last layer processed. Second question, I understand that the processing of video frames should be carried out step by step, and the result of the processing of the previous step will be output as the next step. So according to the understanding of the paper, all frames should be processed in each step, is it right?

I look forward to your reply. Thank you again.