Can we listen to upanyasams uploaded in internet (youtube) during Asauca period? What can and cannot be done during Asauca period?

It is not wrong in listening to Stotra patam and upanyasams during Asauca period.
One must perform the Nityakarma Anushtana like Sandhyavandanam during Asauca period.
But visiting temples, worshipping Perumal at home, and prostrating elders at home are prohibited during Asauca period.