OpenShot Video Editor

Feature request: opacity masks

Asked by TonyKnott

I didn't know about the concept of Luma transitions and I'm surprised at how clever it is at combining power and simplicity.

Inspired by it, I'd like to ask the following feature: opacity masks for videos based on grayscale images.

This would allow fine-grained control over video transparency and allow a lot of cool effects.

Does MLT support this?

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TonyKnott
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This question was originally filed as bug #454292.

Revision history for this message
Helen McCall (wildnfree) said : 		#1

Hello Tony,

This is already implemented in OpenShot.

You can add svg grayscale images to the system by copying them to the openshot/openshot/transitions folder.

To use as a mask instead of a transition, just place the transition luma on the timeline. Then right click on the transition and select to convert it to a mask.

I will convert this to a question because it is not a bug, and it is a feature already in OpenShot.

Helen

Revision history for this message
Helen McCall (wildnfree) said : 		#2

Hello Tony,

This is already implemented in OpenShot.

You can add svg grayscale images to the system by copying them to the openshot/openshot/transitions folder.

To use as a mask instead of a transition, just place the transition luma on the timeline. Then right click on the transition and select to convert it to a mask.

I will convert this to a question because it is not a bug, and it is a feature already in OpenShot.

Helen

Revision history for this message
Jonathan Thomas (jonoomph) said : 		#3

You can also use PNG (or other bitmap formats).

On Sat, Oct 17, 2009 at 8:01 PM, Helen McCall <
<email address hidden>> wrote:

> Question #86188 on OpenShot Video Editor changed:
> https://answers.launchpad.net/openshot/+question/86188
>
> Helen McCall posted a new comment:
> Hello Tony,
>
> This is already implemented in OpenShot.
>
> You can add svg grayscale images to the system by copying them to the
> openshot/openshot/transitions folder.
>
> To use as a mask instead of a transition, just place the transition luma
> on the timeline. Then right click on the transition and select to
> convert it to a mask.
>
> I will convert this to a question because it is not a bug, and it is a
> feature already in OpenShot.
>
> Helen
>
> --
> You received this question notification because you are an answer
> contact for OpenShot Video Editor.
>

Revision history for this message
TonyKnott (tonyknott-deactivatedaccount) said : 		#4

Ok, solved.

But this feature definitely needs more advertisement. :)

Revision history for this message
Rudiger Wolf (rudiger-wolf) said : 		#5

Hi

I've created a PNG file to use as a mask.
Ive droped it in
/usr/share/pyshared/openshot/transitions
and
/home/rnwolf/.openshot/transitions
on Ubuntu Lucid with OpenShot from standard repositories.

But this png file does not appear in the transitions selection menu as expected? I see all of the default ones starting with Dissolve.

Revision history for this message
Alain Rossmann (alain-the-roffmans) said : 		#6

Same for me. New transition does not appear in the list, only the built-in transitions starting with Dissolve which is out of alphabetical order.