Have you been to Antarctica? I have not been there, but as i stated before i have several friends who have worked Antarctic summers at McMurdo and other bases. Each has told me in detail about the experience, and I have specifically asked about the sun. You could probably get a job there too if you wanted to see the circling sun for yourself. I watched the video you posted and have seen that clip dissected by Flat Earth Advocates before- the actual cut is right about 1 minute into the original clip, at about 4:42 of the video you posted, and it uses a fade transition. You can see a vehicle suddenly appear in the background. It was an editing choice for the film that clip comes from to start and end at the mountain. You might find that misleading and I find it unnecessary, but lucky for you there are plenty of unedited versions of similar clips on youtube you can watch. Now let's just say that you reject them all and claim they are all faked or are lacking in sufficient evidence to demonstrate a circling sun. If that is the case then my question is this- What level of evidence would you need in order to accept that the sun circles around an observer in Antarctica during its summer? Would you believe it if you saw it in person? Would you believe it if a close friend or family member of yours saw it in person? All that being said, I don't think the circling Antarctic sun is the definitive last word in dismantling Flat Earth Cosmology- it has several other major conflicts with simple observations.