I don't understand the Result

[PhilipCheungISAB]

Hi @ConsistentlyInconsistentYT

Thanks for sharing your idea and the code.
I used blender to create a small object flying from left to right, in front of an image (white cloud and sky), two Blender cameras transform is using ZYX euler as ChatGPT suggested.

The result generated looks a bit strange to me.

As the image above presented, 2 cameras at bottom left, but showing 2 trajectories to make an X, not a horizontal curve as expected.

Would you please guess what problem it is?
Camera parameters?