Keyframes malfunction with Contrast

[Namna]

What is your operating system?
Mac OSX Mojave

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
22.06.23

Can you repeat the problem? If so, what are the steps?
Oui
Placer un filtre contraste sur un clip quelconque.
Mettre une image clé au début avec une valeur faible.
Mettre une image clé à la fin avec une valeur forte.
A ce stade, le fonctionnement est bon.
Supprimer la seconde image clé.
La valeur du contraste devrait être celle de l’image clé du début, et ce sur toute la longueur du clip.
Or, ce n’est pas le cas, la valeur du slider de l’UI est bonne, mais pas l’image dans le lecteur qui passe au noir.

Yes
Place a contrast filter on any clip.
Set a keyframe at the beginning with a low value.
Set a keyframe at the end with a high value.
At this point, it works fine.
Remove the second keyframe.
The contrast value should be the same as the keyframe at the beginning, for the whole length of the clip.
However, this is not the case, the value of the UI slider is good, but not the image in the player which turns black.

[MusicalBox]

What is your operating system? Windows 10
What is your Shotcut version 22.12.21 and 23.03 Alpha

I also found a bug with the Contrast filter on Windows, but it’s a bit different from the one experienced by @Namna on his Mac: The filter doesn’t accept keyframes at all.

Here’s an example of the problem. I captured it in the Alpha release, but it’s also present in v22.12.21

[DRM]

@MusicalBox

Here’s an example of the problem. I captured it in the Alpha release, but it’s also present in v22.12.21

Yeah, I already reported that in the Alpha thread:

Alpha Version 23.03 now available to test

To Dan, Brian and everyone else who contributed to all of the advances that are here in this Alpha release, I take my hat off to you. Thanks for all the work that was put into this as it is a big step forward for Shotcut. I found some free time to take this Alpha for a quick spin and here are bugs that I found: Tool tip for Advanced Keyframes can be obstructive. In this pic here, the cursor and keyframe are blocked by the tool tip. GPU Brightness highest limit (200%) is not as high as th…

[brian]

@Namna

Place a contrast filter on any clip.
Set a keyframe at the beginning with a low value.
Set a keyframe at the end with a high value.
At this point, it works fine.
Remove the second keyframe.
The contrast value should be the same as the keyframe at the beginning, for the whole length of the clip.

This is fixed for the next release (But not in the Beta 23.04)

[brian]

@MusicalBox

I also found a bug with the Contrast filter on Windows, but it’s a bit different from the one experienced by @Namna on his Mac: The filter doesn’t accept keyframes at all.

I do not recreate this. Can you try again with the Beta? If it still occurs for you, can you attach the application log? Also, it might be nice to create a separate thread for this.

[shotcut]

That (from MusicalBox) was fixed for the beta.