Over the last many years of welding instruction I have been constantly searching for better video of an actual weld. There are millions of crappy videos showing the welder and a bright white area where the weld is occurring.
Finally I found what I was looking for.
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These guys are researching Weld Vision systems at the University of Auckland in New Zealand. Weld Vision systems are used with robotic welding systems to allow a human operator to see what the robot is doing. The cameras are very expensive, so I have never been able to get ahold of one. All of my attempts to take video of welds failed to show any detail of the actual weld process.
Some of these videos are quite detailed and beautiful. I especially like the laser welding build-up video.
Enjoy.