Transparency not showing

[AndyV]

I'm making some TIF files with a transparent background. They are all constructed and exported in the exact same manner in Affinity.

Circles or other shapes against transparent background.

I then am taking them into a video editor (Resolve).

And on ONLY one of them the transparency is turning to black. There are over ten other files where the transparency works fine. It is only this blue star image.

This might not be an Affinity question, but I don't see any reason why the video software would affect this.

First two images are from Affinity.

Second two images in Resolve (against a blue background so you can see what is happening.

[David in Яuislip]

Seems like a Resolve issue to me, what happens if you move the images from V4 down to V2?

[AndyV]

Clever thought. But those are just video tracks and don't affect appearance. Just the same I tried your suggestion and it didn't change anything.

I posted this same question on a Resolve forum and someone said offhandedly that Affinity is "unnecessarily complicated" when it comes to handling Alpha channels. I posted a question to him what he means by that. But that got me wondering whether Affinity is either just "handling" these files wrong, or whether I clicked something accidentally.

But I ran a test, remaking that file again and the same thing happened. That suggests MAYBE there is something in the original TIF file that I brought into Affinity. But I can't imagine what. All the tif files I"m bringing in were exported from Illustrator without changing any of the settings menu that pop up at the time of export.

[David in Яuislip]

37 minutes ago, AndyV said:

Clever thought.

Yeah, I thought so too, shame it was wrong

If it's an 8bit tiff try 16, or vice versa, otherwise try png or any other format allowing transparency that Photo can output and Resolve accepts. Good luck

[AndyV]

hmmmm, an even cleverer thought. I'll try that.

[AndyV]

Oh my goodness!!!! That works. Thank you so much. With hindsight, that is the obvious thing I should have tried, but knowing me, I doubt I would have thought of it.

Now for extra credit, do you have any idea why most of the 8-bit files are working but this one didn't work at 8-bits but does at 16?

[David in Яuislip]

3 minutes ago, AndyV said:

Now for extra credit, do you have any idea why most of the 8-bit files are working but this one didn't work at 8-bits but does at 16?

No, so that's blown my Nobel prize

I must admit that I always use pngs for input to my rather lowly Magix video editor, works well

Good that it's fixed

[AndyV]

Not so fast! I just started on another set of files. I remade them as 16bit and it didn't work! But then I tried again with 32bit and it worked.

I hate this.

EDIT: went back and made it AGAIN with 16bit and it worked.

I still hate this.

[David in Яuislip]

12 minutes ago, AndyV said:

I hate this.

Yeah, I would too. Try this

https://beginnersapproach.com/davinci-resolve-stills-images/#how-to-make-an-image-transparent-in-davinci-resolve

[AndyV]

ahhhhhhhhhhhhhhh....that is it! God knows what premultiplied is, but I don't care.

Thank you!!