sound only on focus post?

Hello! How are you? First of all: thank you very much for your work! It works really well. But I would like that when the videos are seen on the home page, only the one that is in focus is played with sound, because if not, when entering, all the videos are heard at the same time. How could I do this? In case it is not possible, then I would like all the videos to be played without sound on the home page, but with sound within the notes. Could you help me? Thank you very much!

The page I need help with: [log in to see the link]