Bruckner's Symphony No 8 is his finest and longest symphony. The haunting and spiritual adagio (lasting 29 minutes under Wand) is the crowning glory of the composition. Although I am a longtime admirer, Bruckner is not everyone's cup of tea. He requires patience and concentration over the long spans of music and the slow progression to massive climaxes.
Gunther Wand, a Bruckner specialist, conducted this performance in his late eighties. As seen on this DVD, he looks frail, old and gaunt. Amazingly, he stands throughout the concert and appears to have total control over his orchestra. Wand elects for a measured and steady tempo and delivers a very good if not great interpretation. The live concert is excellently filmed and the sound is good. I have watched it a number of times and continue to find the experience rewarding.
For an alternative DVD performance I suggest you explore Karajan on DG or Sony. The same conductor is also peerless on his many sound recordings; in my opinion the DG/Berlin version still reigns supreme.
P.S. I have heard of someone who had the Adagio played at his funeral. Many have still not forgiven him for this act of revenge!