Partial Brightness Adjustment

I’m not smart enough to be able to describe what I’m asking in words, so here’s a photo.

I’m videoing out the front window of an airplane. I purposely set the camera to capture instrument panels. I think the overly-bright landscape out the window is a natural/expected result of the camera focusing on making the instruments clear an readable.

I am wondering whether there’s a way to retain the clarity/readability of the bottom while making the top outside portion look more natural.

Thank you.

Screenshot 2023-11-21 150144|624x356

The gradient filter will help with this

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Hi @midlifeflyer. You can try this:
The idea is to isolate the cockpit instrument panel with mask, on a 2nd track, and then adjust the overly-bright landscape on track V1. Keyframes can be added if the sky changes during the flight.


Nice solution @SergeC

Edit: I just ran through your solution. I don’t know why but this only works for me when the top Mask Simple Shape is set to Operation: Minimum (bottom Mask Simple Shape is set to Operation: Subtract).

Your solution work when both Mask Simple Shape’s are set to Operation: Subtract. Strange!


Thank you. @PaulusMaximus! Here’s the before/after using your suggestion. I tried it at various points in the video and it worked fairly well in all of them. Just just a bit of the glare our while leaving the clarity of the panel intact!

I’ll try @SergeC’s suggestion next.

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Thank you @SergeC. I played with it and it really helped me learn more about ShotCut’s capabilities. Results for me were similar to @PaulusMaximus’ gradient idea, which is a little easier easier for me to apply and repeat.

Thank you both!

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You are absolutely right.
I’ve temporarily changed Mask 1 to subtract to show the ellipse in preview 25%, but it’s Mask 1: Overwrite or Minimum and Mask 2 : Subtract


@SergeC, I reviewed this again and understand it even better. It turns out that the extreme brightness was due to me. The camera actually split the difference with the result being a dark panel and a bright outside. The photo I put in at the beginning was after using the Color Grading filter to brighten the panel (which works much better here than adjusting brightness, contrast, and white balance). Adopting and experimenting with your technique, I used my Color Grading in V1 and used the mask to subtract the panel in V2. This is the original, infiltered video and the result.

Thank you both again! This will be extremely useful in future videos!

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@midlifeflyer, Color grading alone effectively darkens instrument panels. Well done for mixing the 2 methods. Great result. Enjoy your flights :+1:

Je dois aussi régler les 2 masques sur Opération: Soustraire.

I also need to set the 2 masks to Operation: Subtract.

Glaxnimate (+ Mask: Apply) can be used to create the mask. Then you can use any other filter to adjust the Brightness.


Bonjour @Namna. Curieux. Dans Windows, si Mask1 = soustraire, le cockpit est assombri. Ce n’est pas une combinaison logique.
Quoiqu’il en soit, la solution de @MusicalBox met tout le monde d’accord et permet des formes personnalisées.
J’avoue que je ne pense pas assez aux possibilités de Glaxnimate.

Hi @Namna. Strange. With Windows, if Mask1= subtract, the cockpit is darkened. It’s not a logical combination.
Anyway, @MusicalBox’s solution puts everyone in accord and allows custom shapes.
I admit I don’t think enough of Glaxnimate’s possibilities.

Which OS are you on Namna?

Thank you. I don’t need to go the extra Glaxinimate step for this, but you’ve shown me how to set things up to do what I need in only one track. I’ve even saved the Mask - Adjust - Mask:Apply collection as a Filter Set.

Is it proper to tag multiple posts as the Solution? This is the one that ultimately applies to this specific video, but I can see uses for all ot them.


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Je met la photo/vidéo sur la piste V1 et j’ajuste le contraste et la luminosité par rapport au tableau de bord.
J’ajoute une piste V2 sur laquelle je remets la même photo/vidéo.
J’ajuste le contraste et la luminosité cette fois-ci sur la vue extérieure.
Je mets ensuite le filtre Masque simple forme = ellipse, et la seule variante qui me permet de voir le tableau de bord de la piste V1 est Soustraire.
Je mets ensuite le filtre Masque simple forme = rectangle, et la seule variante qui me permet de voir le tableau de bord de la piste V1 est aussi Soustraire.

I put the photo/video on the V1 track and adjust the contrast and brightness relative to the dashboard.
I add a V2 track on which I put the same photo/video.
I adjust the contrast and brightness this time on the exterior view.
I then put the filter Simple mask shape = ellipse, and the only variation that allows me to see the dashboard of the V1 track is Subtract.
I then put the filter Mask simple shape = rectangle, and the only variation that allows me to see the dashboard of the V1 track is also Subtract.

Je suis parfaitement d’accord. J’ajouterai que si la caméra n’est pas parfaitement fixe par rapport au tableau de bord, il doit être possible de déplacer le masque Glaxnimate avec des images-clés. Dans la solution ellipse + rectangle cela risque d’être plus fastidieux.

I completely agree. I will add that if the camera is not perfectly fixed relative to the dashboard, it should be possible to move the Glaxnimate mask with keyframes. In the ellipse + rectangle solution this may be more tedious.

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@Namna. Effectivement, je reproduis avec votre exemple qui inverse les réglages de filtres.
Dans mon exemple, luminosité et contraste sont appliqués sur la piste V1 pour la vue extérieure.
Sur la V2, les 2 masques du cockpit et éventuellement un filtre luminosité pour éclaircir les instruments.

@Namna. Indeed, I reproduce with your example which reverses the filter settings.
In my example, brightness and contrast are applied to track V1 for the outside view.
On V2, the 2 cockpit mask filters and, possibly a luminosity filter to brighten up the instruments.

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