Resolution of a Still/Picture

In Davinci Resolve Studio 18.6.6 on Mac

I'm working in fusion on 6144x3240 clip
I drag a Still/Picture from the media pool to the node graph
and load it in the viewer. it shows it has the same resolution as the clip
But the true resolution of the Still/Picture is 3508x2481
Am I mad ?
Can someone reproduce this ?
I tried many Still format (EXR, PNG, JPG200, TIFF) .. same result
Any explanation ?
Thanks in advance
EDIT
this is more serious than I thought, It also change the Still Ratio to the clip ratio
EDIT again
If I create a fusion comp and I drag a Still/Picture from the media pool to the node graph
and load it in the viewer. It shows it has the same resolution as the timeline (4096x2160)

And how do you know the true resolution? Is that what it reports in the finder? What is the resolution according to the Media Pool?

And how do you know the true resolution? Is that what it reports in the finder? What is the resolution according to the Media Pool?

Yes it's a resolution in the finder and the media pool
Can you reproduce it ?
I've edited the OP : another issue ➧ Ratio

May-be an explanation
The media-In created when dragging the Still/picture has some inspector properties
The clip name is not the still/picture media pool name's but the actual working clip (in the timeline)
It seems weird to me, doesn't it ?

It may be weird. It may also not be weird. Can you show us a couple of screenshots?
There are settings that dictate whether or not images get squashed or stretched to fit on the timeline.
But I thought these were Edit Page settings. I haven't worked with images this large, so it could be a factor? If you resize them to be close to 4K in size (not aspect ratio) does that make a difference?

I'm currently working on a commercial and I can't disclose any footage.
I'll take some time to reproduce it with other footages and Still and post somme screen shots
thanks

Does it also happen with a white jpg of that resolution. That should be fine NDA wise, wouldn't it?

I didn’t try jpg. Because the still has alpha (I didn’t mention it)

Fusion is technically speaking resolution agnostic, or independent per se. Anything generated natively in Fusion can be resolution independent, although there is a concept of so called reference resolution. Meaning that if you want use some kind of fixed pixel dimensions for compositing reasons or matching size of imported elements to the ones generated in fusion you can use reference resolution. Most nodes have this setting, most notably the background node. But is just there to be a placeholder and used as reference for other nodes.

When you import images into Fusion or media it will have obviously the native resolution of the clip or image, and if you scale something up beyond native resolution it will degrade in quality. Obviously. However you can scale up to lower size and than back up, as long as you don't use nodes to change resolution of the original clip, you will be fine. Its none destructive, like smart objects in Photoshop.

When you import something from edit page, into fusion page, or drag something from media pool or loaded it into fusion page via drag and drop or loader node, it will retain original resolution of the clip or image, but inside the fusion page, in the merge node, whatever your background is will keep the primacy over the foreground. So if you connect the 6144x3240 clip as background and merge on top the 3508x2481 as foreground, fusion will keep 6144x3240 of the background as your "canvas" and merge whatever you add as foreground on top but background input will be primary info for size.

If you press CTRL + T or right mouse click on the node to choose "swap items" or inputs of background and foreground than it will be reverse, but background input only defines non permanent canvas, it does not change the resolution of any of the inputs, unless you use nodes like "resize, scale etc" to specifically change resolution of original clips.

If you want Edit page "timeline" resolution and all effects to remain the same when you go to fusion, you can restrict that by using "fusion comp" as you have noticed. Otherwise, the resolution of anything in Fusion will be pulled from the media pull and original clip/image.

Fusion is technically speaking resolution agnostic, or independent per se. Anything generated natively in Fusion can be resolution independent, although there is a concept of so called reference resolution. Meaning that if you want use some kind of fixed pixel dimensions for compositing reasons or matching size of imported elements to the ones generated in fusion you can use reference resolution. Most nodes have this setting, most notably the background node. But is just there to be a placeholder and used as reference for other nodes.

When you import images into Fusion or media it will have obviously the native resolution of the clip or image, and if you scale something up beyond native resolution it will degrade in quality. Obviously. However you can scale up to lower size and than back up, as long as you don't use nodes to change resolution of the original clip, you will be fine. Its none destructive, like smart objects in Photoshop.

When you import something from edit page, into fusion page, or drag something from media pool or loaded it into fusion page via drag and drop or loader node, it will retain original resolution of the clip or image, but inside the fusion page, in the merge node, whatever your background is will keep the primacy over the foreground. So if you connect the 6144x3240 clip as background and merge on top the 3508x2481 as foreground, fusion will keep 6144x3240 of the background as your "canvas" and merge whatever you add as foreground on top but background input will be primary info for size.

If you press CTRL + T or right mouse click on the node to choose "swap items" or inputs of background and foreground than it will be reverse, but background input only defines non permanent canvas, it does not change the resolution of any of the inputs, unless you use nodes like "resize, scale etc" to specifically change resolution of original clips.

If you want Edit page "timeline" resolution and all effects to remain the same when you go to fusion, you can restrict that by using "fusion comp" as you have noticed. Otherwise, the resolution of anything in Fusion will be pulled from the media pull and original clip/image.

Thanks
I know all that .. I teach those fusion concepts ..
But my issue in the OP remains
Thanks again

Here are somme screenshot of the issue

Elements Specs

SCR-20240419-hggr.png (14.6 KiB) Viewed 1927 times

Watch the resolution in Viewers

SCR-20240419-hhmo.png (246.48 KiB) Viewed 1927 times

It changes the resolution (Ratio also )

Hmm. I've tried to replicate it myself and I don't get unexpected behaviour as you do. So I'm not sure what is causing it.

Thanks I’ll try on another computer if it’s hardware related !!

Thanks I’ll try on another computer if it’s hardware related !!

Could be maybe version of something, software related, do you have some third party plug ins or scripts or something installed on that version of resolve? Or could be a bug. I tried to replicate it now seeing your nodes with various methods, and short of wanting it to make it like that by using a background node, I works for me as intended. Sorry.

1. I exported an archive on my project from my Computer
2. I restore the Archive on another computer With Resolve 19 ➧ Same Issue
3. I start a new project from scratch on the other computer With Resolve 19 ➧ No issue
4. I start a new project from scratch My computer With Resolve 18.6.6 ➧Same issue

It seem hardware related : My computer is MacBookPro M2 MAX 32GB with MacOS 13.6.x
What are the Spec of your hardware ?
Thanks

1. I exported an archive on my project from my Computer
2. I restore the Archive on another computer With Resolve 19 ➧ Same Issue
3. I start a new project from scratch on the other computer With Resolve 19 ➧ No issue
4. I start a new project from scratch My computer With Resolve 18.6.6 ➧Same issue

It seem hardware related : My computer is MacBookPro M2 MAX 32GB with MacOS 13.6.x
What are the Spec of your hardware ?
Thanks

Hmm. That's strange. Hardware issue. Oh well. My specs for the test were very old.

Windows 10 Pro 64.bit
Intel Core i5 3470 3.20 GHz
16 GB of RAM
Nvidia GeForce GTX 1060 6GB


I did have DaVinci Resolve 18.6.3, not the 18.6.6. Maybe its related to that version of Resolve, or operating system. Or maybe its related to RED file format. I can't say. I can say that I've never had that kind of issue with any version of resolve.

sshot-3769.jpg (83.01 KiB) Viewed 1838 times

May be it’s due to the resolutions
I’ll give a try with the same resolution as yours …
Thanks
EDIT
I tried with Smaller resolutions and ProRes File
Same Issue