You can choose the English or Persian subtitle by clicking on CC setting button under the video line
https://www.youtube.com/watch?v=_FWHhwzNUYY
https://www.mahdialumma.com/showthread.php?27023
This is a companion discussion topic for the original entry at https://www.ponder.zone/q/video-of-the-imam-mahdi-nasser-mohammad-al-yemeni