What is your operating system?
Windows 11 Pro / 23H2
What is your Shotcut version (see Help > About Shotcut)?
Shotcut version 24.10.29
Can you repeat the problem? If so, what are the steps?
Problem easilly to repeat. Didn’t tried with another source clips but iPhone SE2020 .mov, but within it the bug is stable.
Taking one file by “Open File” gives a good result. But if to take the same in a batch, the converted copy became dark, contrast is lowered. All settings the same - middle quality.
(1) this copy was converted alone. (2) inside a batch. Also, have no idea if it is normal behavior (but unlogical) when during a batch processing - both source and converted files goes to playlist, while with single conversion - only converted.