Not sure if you can get much from the video, but here it is running:
Last time it was ridden was 11/25/17. I clutched in and it just randomly died on me. I was able to jump start it and that's when the detonation started. I had to ride it about 10 miles home doing WOT in 3rd and 4th gear.
Starts up no problem, timing doesn't sound off. The coil/wires/plugs have all been replaced within the last 2-3 years.