<![CDATA[[ANSWERED] Composition issues]]>Hi everybody,

I'm very new at Isadora and I'm trying to figure out how to place something (a shape in my case) on top of something else and apply an effect on it.

I basically want 2 layers: a "back" white shape and a "front" red shape:


I can get this to work by using 2 projectors with blend to "transparent" and the appropriate layer settings.

Now I want to apply an effect (Dots for instance) to the whole thing. To do this I figured I must get a single "video" cable, so i can feed to through a "Dots" actor.

The problem is that using a MultiMix the 2 videos don't really stack on top of each other, no matter the order of the input cables - so the red "front" shape is not visible:


What am I doing wrong here, or what is a better approach for this ?

Thanks in advance for your help!

]]>https://community.troikatronix.com/topic/5976/answered-composition-issuesRSS for NodeWed, 16 Sep 2026 02:40:22 GMTWed, 17 Jul 2019 09:58:34 GMT60<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 17:06:36 GMT]]>I will add that the 'matte' actor will allow you to stack the images exactly as you had in your first example.
For this type of compositing it would be me go to actor.

]]>https://community.troikatronix.com/post/36358https://community.troikatronix.com/post/36358Wed, 17 Jul 2019 17:06:36 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 13:46:01 GMT]]>@lipsumar

Strange the way I showed you was working for me on both 2.6.1 and 3.0.1.

Best Michel

]]>https://community.troikatronix.com/post/36355https://community.troikatronix.com/post/36355Wed, 17 Jul 2019 13:46:01 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 13:36:01 GMT]]>@Michel I'm using 3.0.1 on MacOS Mojave (10.14.5)

@Woland thanks for these other ways, the virtual stage seems to be exactly what i was looking for!

]]>https://community.troikatronix.com/post/36354https://community.troikatronix.com/post/36354Wed, 17 Jul 2019 13:36:01 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 11:28:25 GMT]]>@lipsumar 

What version of Isadora are you using?

Best Michel

]]>https://community.troikatronix.com/post/36353https://community.troikatronix.com/post/36353Wed, 17 Jul 2019 11:28:25 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 11:29:09 GMT]]>There's always more than one way to skin a cat

3.0.1 Layering.izz


1) Michel's Effect Mixer + Dots method


2) Send your layered content to a Virtual Stage and then pick it up as a single video stream with a Get Stage Image actor

3) Give each their own copy of the effect

]]>https://community.troikatronix.com/post/36352https://community.troikatronix.com/post/36352Wed, 17 Jul 2019 11:29:09 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 11:06:49 GMT]]>Thank you for your answer.

Strangely i don't get the same result; the white shape still seems always on top:

]]>https://community.troikatronix.com/post/36351https://community.troikatronix.com/post/36351Wed, 17 Jul 2019 11:06:49 GMT<![CDATA[Reply to [ANSWERED] Composition issues on Wed, 17 Jul 2019 10:50:44 GMT]]>@lipsumar

instead of using the MultiMix you can use the effect mixer. 

Best Michel

]]>https://community.troikatronix.com/post/36347https://community.troikatronix.com/post/36347Wed, 17 Jul 2019 10:50:44 GMT