In the video on the left, you can see the changements after using the Levels filter for each colour separately.
Please read the comments included in the video.
I suggest to practise with these two clips.
You must adjust all 3 levels (red, green and blue) to achieve the end result.
The result speaks for itself.
I never think of using the Levels filter in Shotcut.
I should though, since I use it (or Curves) all the time in Photoshop.
Thanks for this demonstration and instructions Deauville.
I’m sure it will be very helpful for many Shotcut users.
Can you not simply use one filter with the Value channel? It seems to me that if you do each channel differently you are skewing the color when you were simply trying to improve the exposure.