Have a DJI Mini 3 Pro and used Hyperlapse Waypoint in order to make day/night photos. Worked well and saved the Hyperlapse. Have repeated the saved Hyperlapse task several times. Results differ (altitude, coordinates, camera level). After selecting a day and night photo, intensive post-processing was needed to make the 2 photos fit. What can be the cause of said differences, better how to prevent?

Remember, the drone has nothing to 'hold on to' only the coordinates and height.
Even the slightest variation in orientation will make a big change.
I did a project with a DSLR + tripod for 2 years (making the 'exact' same image 2x a week) and it was super hard to align due to slight changes in camera orientation.
So yes, it will be hard to replicate the exact path.

Hi, Exter. Thank you for reaching out. When saving the task library and executing tasks, the altitude is from barometer, and the altitude of the barometer is easily affected by various factors such as weather, resulting in errors. If you find that the altitude difference is too large during the use of the task library, it is recommended that you turn off the power after landing and try to take it off again. At the same time, it is recommended to fly at a height of more than 50 meters for timelapse photography. The higher the altitude, the smaller effect of the error of the barometer. Also, please fly the task and save the task under a strong GPS signal. We hope this helps. Thank you for your kind understanding.  Nice shot, by the way.

DJI Gamora Posted at 12-17 00:08
Hi, Exter. Thank you for reaching out. When saving the task library and executing tasks, the altitude is from barometer, and the altitude of the barometer is easily affected by various factors such as weather, resulting in errors. If you find that the altitude difference is too large during the use of the task library, it is recommended that you turn off the power after landing and try to take it off again. At the same time, it is recommended to fly at a height of more than 50 meters for timelapse photography. The higher the altitude, the smaller effect of the error of the barometer. Also, please fly the task and save the task under a strong GPS signal. We hope this helps. Thank you for your kind understanding.  Nice shot, by the way.

Thanks all. Height was about 60 meters and GPS 22 satellites. Repeated with power off on.
Have made the day night transition more gradual and horizontal instead of diagonally across the bridge. Aligning the bridge of the 2 photos was a problem and made a gradully transistion impossible. Now it looks a lot better.

exter Posted at 12-17 02:17
Thanks all. Height was about 60 meters and GPS 22 satellites. Repeated with power off on.
Have made the day night transition more gradual and horizontal instead of diagonally across the bridge. Aligning the bridge of the 2 photos was a problem and made a gradully transistion impossible. Now it looks a lot better.

Hi, Exter. Thank you for the update. Good to read that it looks better now. If you need further assistance, don't hesitate to reach us here at DJI Forum. Thank you for your valued support.