'Brightness & Contrast' and 'Hue' effects not doing very well

[DanPinGF]

Describe the bug: The 'Brightness & Contrast' and 'Hue' effects in OpenShot have gone into a glitchy state since 2.6.0, making them completely useless.

Steps to reproduce the behavior:

1. Go to 'Effects'
2. Drag 'Brightness & Contrast' or 'Hue' to any video or image
3. Adjust the value of 'Brightness' above 0, for instance 0.08 (for 'Hue', this is done similarly)
4. Problem result explained below.

Expected behavior: It should render correctly like in prior versions. However, the 'Brightness & Contrast' and 'Hue' effects seem to be broken since 2.6.0, resulting in glitching artifacts on the preview, and on export as well.

System Details:

• OpenShot Version: 2.6.1
• Operating System / Distro: Windows 11

Log Files: N/A

Exception / Stacktrace: N/A

Screenshots: (Optional)

[stale[bot]]

Thank you so much for submitting an issue to help improve OpenShot Video Editor. We are sorry about this, but this particular issue has gone unnoticed for quite some time. To help keep the OpenShot GitHub Issue Tracker organized and focused, we must ensure that every issue is correctly labelled and triaged, to get the proper attention.

This issue will be closed, as it meets the following criteria:

• No activity in the past 180 days
• No one is assigned to this issue

We'd like to ask you to help us out and determine whether this issue should be reopened.

• If this issue is reporting a bug, please can you attempt to reproduce on the latest daily build to help us to understand whether the bug still needs our attention.
• If this issue is proposing a new feature, please can you verify whether the feature proposal is still relevant.

Thanks again for your help!

[DanPinGF]

@JacksonRG - This issue still needs to be resolved.

[JacksonRG]

@DanPinGF Heres the behavior I'm seeing for those effects. (Same on windows as well) Could you show me what glitchy behavior you're seeing?

https://user-images.githubusercontent.com/42394129/173715853-afd2375f-3caa-4a70-89d1-3d1d7a76dbaf.mp4

[DanPinGF]

@JacksonRG - When applying the 'Brightness & Contrast' or 'Hue' effects to an image that has alpha (transparency), no matter the value or intensity, they produce irregular colors on the affected image (see screenshot below).

You can see here that, with 'Brightness & Contrast' applied to one of the images containing alpha (bottom left), as the video progresses, color distortion occurs, resulting in a crappy color corruption effect.

[JacksonRG]

Can you share the project file? I'm confused about the effect you're trying to achieve

[DanPinGF]

@JacksonRG - This is the project:

The image selected in the timeline has the 'Brightness & Contrast effect applied to it.

[stale[bot]]

Thank you so much for submitting an issue to help improve OpenShot Video Editor. We are sorry about this, but this particular issue has gone unnoticed for quite some time. To help keep the OpenShot GitHub Issue Tracker organized and focused, we must ensure that every issue is correctly labelled and triaged, to get the proper attention.

This issue will be closed, as it meets the following criteria:

• No activity in the past 180 days
• No one is assigned to this issue

We'd like to ask you to help us out and determine whether this issue should be reopened.

• If this issue is reporting a bug, please can you attempt to reproduce on the latest daily build to help us to understand whether the bug still needs our attention.
• If this issue is proposing a new feature, please can you verify whether the feature proposal is still relevant.

Thanks again for your help!

[DanPinGF]

@JacksonRG - The problem continues to persist as of version 3.0.0. It has never been fixed in the Daily Builds.

[jonoomph]

Taking a look now

[jonoomph]

Yup, this is very strange! I can successfully reproduce it.

[Colorjet3]

@jonoomph I created a Trello card for this in the Backlog board.

[jonoomph]

A new daily build should be ready in about an hour with the fix for the following effects:

• Hue
• Brightness & Contrast
• Saturation

https://www.openshot.org/download/#daily