I'm about done with Fusion

I spent the better part of a day working on a script for a Fusion clip in the Resolve timeline.

The composite worked and looked great after I cached it and played it back on the edit page.

The next day, I open up the timeline and the Fusion script is broken. It doesn't look like it did the day before.

Upon further investigation, it appears that none of the masks were working. I was seeing the same behavior that I wrote about in a previous post where masks don't work when plugged into MediaIn nodes.

So, I'm at a loss. I don't know how to make them work again. This is obviously a bug. I'm very annoyed.

Probably you need to set the resolution of the masks explicitly in their Image tab. But without at least a screenshot of your flow, there's a limited amount of help we can offer. As far as I am aware, none of us is psychic.

As far as I am aware, none of us is psychic.

That's what YOU think...

As far as I am aware, none of us is psychic.

That's what YOU think...

Ooo! Ooo! Do me next!

It looks like you have a titanium helmet, take it off and I'll scan your brain...

Ooo! Ooo! Do me next!

Who said romance was dead?

I finally got into his head and believe me, the mess I felt had nothing to do with romance

Probably you need to set the resolution of the masks explicitly in their Image tab.

My output size is set to Default. Why would I need to change it?

My output size is set to Default. Why would I need to change it?

Because sometimes for some reason Fusion doesn't always 'get' the right size because of a bug/architectural reason. By manually forcing the masks to be the right size, you work around this occasional limitation.

So, I'm at a loss. I don't know how to make them work again. This is obviously a bug. I'm very annoyed.

Damien, I understand your frustration with Fusion! I don't know if this will help you because I"m not sure whether your problem is similar to one I just had and managed to solve.

I set up masks FIRST before doing ANYTHING else. Just mask/mediain/mediaout. And was sure that was exactly what I wanted. Then added all the other "bells and whistles" of the comp. And the mask stayed where I first put it.

When I did it the other way around - setting up the whole 3d comp in my case - and then added the mask, the mask kept being too small when I added it to the media.

I can expand on the behavior a bit. When the mask is in default mode, its size is usually inherited from whatever it's plugged into. If that node doesn't calculate its own dimensions for some reason (you've plugged the mask into the main/yellow input of a blur or a transform, for instance), it will fall back to the comp's settings. Assuming that whatever you use the mask for matches the comp's preferences, all will be well.

If, however, the masked image is not the same size as the comp's prefs, strange things can happen. The mask may adapt its size correctly when you first plug it in, and as long as you're looking at the comp on the Fusion page. When you leave Fusion, or submit a render to a render farm, or otherwise get it to request a frame in a non-interactive mode, the mask may actually process before the downstream node it's supposed to query for its size. So it will fall back to the default in that situation even though it doesn't when you're actually looking at the comp to debug it. This creates much confusion.

So the solution when you have masks that don't behave like they should, or change their behavior when a comp is closed and then reopened, is usually to set their resolution manually.

There are, however, some other less likely possibilities, which is why I asked for more information.

As far as I am aware, none of us is psychic.

I knew you were going to say that

I stand quite thoroughly corrected. Next time I'll just ask all of you jokers for the clarifications!

I stand quite thoroughly corrected. Next time I'll just ask all of you jokers for the clarifications!

If they really were, you wouldn't need to. They would already know.