must we send salawat upon the prophet صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ whenever we hear his name on videos or live videos?

Imam Ibn Baz said: It is obligatory to send blessings upon him (peace and blessings be upon him) when he is mentioned, because it is authentically reported from him (peace be upon him) that he said: "May the nose of a man be rubbed in dust who, when I am mentioned in his presence, does not send blessings upon me." This indicates that sending blessings upon him is obligatory when he is mentioned. Yes.