Render in cache

When I render in cache "regular" clips, DaVinci Resolve remembers those renders from session to session.

However, if I render in cache Fusion clips, and then I close the project, I have to render them in cache again when I reopen the project.

Is there a way to avoid this? Hope it makes sense...

Do you mean "Render In Place"? The new rendering feature on the Edit timeline?


If so, I can't recreate this:

Test one:

1. I created a Fusion Composition, went into Fusion, added a simple comp
2. On Edit: Render In Place
3. Saved project, quit, reloaded
4. Timeline still showed the Render In Place version

Test two:

1. I created a Fusion Clip containing two video clips, went into Fusion, made simple comp
2. On Edit: Render In Place
3. Saved project, quit, reloaded
4. Timeline still showed the Render In Place version.

Or are you talking about Render Cache Fusion Output?


I can't re-create any problem with that, either.

Fusion Clip with Render Cache Fusion Output on, and frames cached:


Save project, quit, reload. Still shows as cached:



Perhaps you can describe the steps you're making and what you see exactly? Showing a screen capture video is the best way to show everything you're doing and seeing.

Or are you talking about Render Cache Fusion Output?

I was talking about Render Cache Output, not Render Cache Fusion Output.

Right now I'm not in front of my computer. Maybe if I try with Render Cache Fusion Output it will work? This afternoon I wil try it and post my results.

Thanks in advance.

I was talking about Render Cache Output, not Render Cache Fusion Output.

OK so you're doing Render Cache Colour Output?

Color Output cache is after Fusion. So it should see and cache the same image as Fusion outputs, plus any effects done on Edit and/or in Color.

I just tested with a Fusion Clip with a slow comp on it. I turned on only Render Cache Color Output, and cached the frames. Then I saved and quit the project, reloaded, and all frames show as cached.



However I did notice that despite these frames showing as being cached in Color Output, playback was not full FPS. So it was like it was still running the Fusion composition, even though Color was caching it. However, playback was still faster than running the comp with no cache. So it was like some of the comp was cached, but not all.

Very strange. I need to test that more.

Maybe if I try with Render Cache Fusion Output it will work?

But yeah, if it's Fusion stuff you want to cache, use Render Cache Fusion Output. In my tests that works fine to stop re-generation of a Fusion Clip composition.

I've tried with Render Cache Fusion Output. When clip is rendered in cache (blue line) I've closed DaVinci Resolve and then reopen it again.

But line is red again (unrendered).

What am I doing wrong?

But line is red again (unrendered).

What am I doing wrong?

I don't know. That's definitely not right or normal.

If you cache the clip, then save, quit, and reload immediately, is the line red?

Open Project Settings, what is Cache Files Location set to? Is that set to a stable storage location? Do you have plenty of free storage space at that location?

If you cache the clip, then save, quit, and reload immediately, is the line red?

Yes.

Open Project Settings, what is Cache Files Location set to? Is that set to a stable storage location? Do you have plenty of free storage space at that location?

I will try to answer your questions this afternoon (I'm not in front of my computer right now).
But thanks a lot for your help. I really appreciate it!

Open Project Settings, what is Cache Files Location set to? Is that set to a stable storage location? Do you have plenty of free storage space at that location?

Cache Files location is something like that /Users/myName/Movies/myProject/CacheClip. So they are stored to my computer hard drive. Righ now I have only free 8 GB availables. But I don't have this strange behaviour with regular clips, just with Fusion clips. Could be this the problem?

Cache Files location is something like that /Users/myName/Movies/myProject/CacheClip. So they are stored to my computer hard drive. Righ now I have only free 8 GB availables. But I don't have this strange behaviour with regular clips, just with Fusion clips. Could be this the problem?

Yeah that sounds fine.

Could you show a screenshot of the inside of one Fusion Clip that demonstrates the problem:
- On Edit: on the main timeline, right-click on the Fusion Clip and Open In Timeline
- Looking at the inside of the Fusion Clip, hit Shift-Z to use the full zoom range
- Now screenshot the whole timeline and upload here.

Maybe we can spot something inside your Fusion Clips that is causing this issue.

Could you show a screenshot of the inside of one Fusion Clip that demonstrates the problem

Yes, of course. Thanks for your help. Here it is:

Sorry Sebastia, I cannot recreate this.

I made a Fusion Clip that is something close to yours: two layers, BRAW clips, image sequence, and I enabled "Cache Transitions" and made sure the inside of the Fusion Clip is cached, like in your screenshot:


Then I put a simple Fusion composition on that Fusion Clip, and let it play to cache it in the Render Cache Fusion Output:


Then I saved the project, quit, and reloaded. All cache files (blue lines) were still there, inside and outside the Fusion Clip.

One element you have that I cannot test is the DNG raw image sequence. I don't think that should change anything, but I do not have any DNG files to test with.

EDIT: I noticed you have a speed change effect on the DNG image sequence. I tested again with a speed change on one clip inside the Fusion Clip. But I still could not recreate the problem.

If you have Resolve Studio I suggest you contact BMD Support directly so you can make sure someone from BMD is investigating it.