Don't need Stefan to tell you how your video evidence doesn't prove the earth is flat. Your proffered evidence supports the theory that the earth is round in itself. If the earth was flat, the camera would have been able to see all ends of the planet from its positions, lands in the extreme distance simply would have been of lesser detail. The fact that the video exhibits a horizon ( a point beyond which you see no more land) proves an existence of curvature which supports the theory of a round planet more so than a flat one. Expanding beyond your evidence; a simple telescopic analysis proves the earth is round and spins on an axis. Viewed from poles, the skies seem to travel in a circular pattern whereas a view from the equator exhibits a horizontal pattern

VS

If your dismissal of one man's pursuit of philosophy and truth is determined by his agreement with you upon a single issue, you're not even attempting to be philosophical. Much like you attempt to prove an entire theory by showing one perspective, your dismissal of Stefan as a whole screams of blind faith.