I use a Fujifilm XT20 to shoot at the sky every 5 seconds.
Here is the final video:
The problem is that in the last 10 seconds of the video the brightness was just all over the place.
I were using automatic aperture and automatic shutter speed.
Then I use
ffmpeg on MacOS to create the video using the JPEG files
ffmpeg -framerate 30 -pattern_type glob -i "DSCF*.JPG" -pix_fmt yuv420p -profile baseline output.mp4
I think the problem is caused by the changing (decreasing) ambient light as the sun set.
Is there any way I can do to reduce the flickering in the final video? e.g. during the time the photo are shot or before the creation of the final video