Mariss Jansons - Strauss, R: Ein Heldenleben, Op. 40 [DVD]
includes documentary: The Sixth Maestro, featuring Mariss Jansons
Royal Concertgebouw Orchestra, Mariss Jansons
https://www.prestomusic.com/classical/products/7934004--strauss-r-ein-heldenleben-op-40