Indian documentary about Dhirendra Brahmachari and his Sukshma Vyayama

Perhaps the only one Indian documentary preserved to this day about Dhirendra Brahmachari and his "Sukshma Vyayama" system of dynamic exercises, published by his Swiss disciple Reinhard Gammenthaller.
We can see in the film Swami Dhirendra himself and his Indian students.
While in the 70s Swami Dhirendra performed yoga lessons on Indian TV - seems these records are lost. Maybe they were just on the air, or are erased.
School of D.Brahmachari was pretty well known among "underground yogis" of Soviet Union (oficially it was forbidden to teach yoga in public), as he came on a visit to the USSR Cosmonaut Training Center, where he tought yogic practice to scientists and brought his books (there are only two: "Yoga Sukshma vyayama" 1956 and "Yogasana Vijnana "1966)