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Fusion Clip won't render (new problem)

PostPosted: Sun Aug 15, 2021 6:42 am
by davy_a
Hey guys, I ran into a big problem in my project and I CAN'T TELL THE REASON WHAT HAPPENED... I have a fusion Comp and It just wont render. It doesnt even show any processing bar at all. After clicking start render, the button turns into stop render but wont show no percentage of the rendering process at all. I already tried several tricks (Copying into another project, looking for corrupted nodes in the console, unchecking stop rendering if frame cannot be processed in the preferences, Isolating different parts of the fusion comp to find the error, setting all bars in the keyframe window from beginning to start properly) but nothing helps. I have no clue. Im trying to make a lyrics video for my release. Its really important to me. If anybody can help it would be so gooood!!!! please contact me. I can also send you the project (5mb)

Re: Fusion Clip won't render (new problem)

PostPosted: Mon Aug 16, 2021 12:41 pm
by TheBloke
Can't really help without any more info.

List your system specs - OS, hardware (CPU, RAM, GPU). And upload the project DRP (if using Resolve) or Fusion comp file (if using Fusion standalone/Fusion Studio). You probably can't upload them here, but can do so via a Google Drive link. As a new user it probably won't let you post URLs, so just add a space at near the start, eg: h ttps://blahblah.com

Re: Fusion Clip won't render (new problem)

PostPosted: Mon Aug 16, 2021 4:52 pm
by davy_a
Hey thank you very much.
Unfortunately I can't repost a link here, but whoever wants to help can PM me.

Im Using the most recent Version of Davinci Resolve Studio 17.2.2. 32 GB Ram, 8 GB GPU, Windows.

IM SUPER GRATEFUL FOR ANYBODY WHO CAN SOLVE THIS TASK. Cant really release a music video because of it.

Re: Fusion Clip won't render (new problem)

PostPosted: Mon Aug 16, 2021 9:06 pm
by davy_a
Im still trying to repost the link here ( with a spacebar after the "h" :D maybe it works).

h ttps://drive.google.com/drive/folders/1 ... sp=sharing

two fonts included, which have to be installed for making this project work. AND it is only the last fusion Clip which is causing the problems. The previous ones should be working fine.

Re: Fusion Clip won't render (new problem)

PostPosted: Tue Aug 17, 2021 9:03 am
by TheBloke
Quoting your PM:
davy_a wrote:Hey unfortunately I can't post a link on the forum, but Imma send you the link via private message. Hope it is working this time
https://drive.google.com/drive/folders/ ... sp=sharing

two fonts included, which have to be installed for making this project work. AND it is only the last fusion Clip which is causing the problems. The previous ones should be working fine.
cheers David
OK so I experienced the exact same problem on DR Studio 17.2.2 on macOS. The compositions work in Edit, but Deliver just won't start, and requires Resolve to be Force Quit.

Took me a while to figure it out, but I've got it:

1. Close Timeline1 (so you're looking at nothing)
2. Playback menu -> Timeline Proxy Mode -> Off
3. Open Timeline1, Deliver it
Image

It appears that having Timeline Proxy Mode active is completely breaking Deliver somehow, at least in this project with Fusion comps. A strange and very annoying bug. I suggest reporting it to BMD in the main DaVinci Resolve forum.

The reason I gave step 1 - closing Timeline1 - is that the first time I tried changing Timeline Proxy Mode to Off I was looking at Timeline1, and switching Timeline Proxy Mode locked up Resolve. Another bug.

So that will get it rendering. Then the first render I tried failed for me early into the second Fusion comp. I changed Preferences to disable the option that stops renders on errors, and then it seemed to render OK (I cancelled before the end though as it was going to take ages - I got as far as part way through composition 5)

By the way, while looking through your comps, I noticed:

> Multiple merge nodes with only one input - you might want to clear these out as they're not doing anything
> Your Renderer3D nodes are set to Software - you will likely get better performance from switching these to OpenGL (the output image may change, so might require altering the scene and/or Renderer3D settings a little)
> On the last Fusion comp you're using multiple MediaIn nodes to load still images. I highly recommend swapping those out for Loader nodes, loading the same images direct from disk. Using MediaIn for images can drastically tank performance in Resolve's Fusion page (for more info: Fusion page: Major performance issue with MediaIn v Loader)

If you're going to be working with compositions of this complexity, you may want to check out Fusion standalone. If you own Resolve Studio, you already have access to Fusion Studio 17. If you don't, then Fusion 9 standalone is still available for free. Either option will likely be more stable and perform better than the Fusion page in Resolve.

What you lose is the ability to easily add compositions to existing timelines with edited clips, but at least in this project, you're not doing that. Fusion standalone works fine for animating to a single audio track, as it has an option to load an audio track and play it in time to your composition.

Or you can design in Resolve, as you have here, then switch to Fusion standalone/Studio just for the final render of each composition. Render out in standalone, then import the renders into Resolve and put them in your timeline in place of the compositions, and do a final render to combine them together.

If you do need to stay in Resolve, I would recommend rendering each of the compositions separately. This could be done two ways:

A. Render in Individual Clips mode, with audio disabled. This will render out each individual clip (in your case, that's each Fusion composition) as a separate file.
B. Manually render them individually, eg by dragging the Fusion compositions into the Media Pool to create permanent clips from them, giving them unique names, then dragging each of them to their own separate timeline. Then make one render job for each each of those timelines.

In either option, you would render these separate clips to a high quality intermediate format like DNxHR HQ, so no quality is lost by rendering multiple times. Then import the rendered files, duplicate your master timeline, and put the newly imported files onto the duplicated master timeline in place of the Fusion compositions. Then render out that duplicate master timeline in standard Single Clip mode with audio enabled, to get your final deliverable. That final render will be very fast, as Fusion is not involved.

Rendering them individually means that any render error in one won't affect the rendering of the others, and it means Resolve and Fusion have a chance to clear their caches in between renders. This may reduce the time it takes to render overall, even though you have to do multiple renders. It also means a failure late in the process only breaks the file that was rendering at the time, and not any that completed successfully before that point, and you can then retry just that composition (and any after it), rather than starting from the beginning every time.

Re: Fusion Clip won't render (new problem)

PostPosted: Wed Aug 18, 2021 5:30 pm
by GalinMcMahon
Thanks for this timely reply. I'm having a similar issue where trying to deliver a fusion clip just does...nothing. No time estimate, no crash, just nothing. Locks DR up and I have to close out, force close in task manager and restart. I will try these methods.

Re: Fusion Clip won't render (new problem)

PostPosted: Thu Aug 19, 2021 12:04 pm
by davy_a
Hey, Thanks for taking the time and looking into my Project! So I tried rendering it out with no Proxy Mode but unfortunately it always stops at the last fusion clip... did you try to have the render get completed? In the meantime I asked on several other pages and one guy was able to tell me the Problem. So it was basically the amount of High Quality Motion Blur I have put on each node, as well as the unneccesary merge nodes I got. I rendered out some parts into saver nodes and was able to render out the last fusion clip part by part. It was a pain actually. There were other methods I tried but didn't do the job: in the delivery page > Advanced Setting > Datalevels > Check "Full".
Its still very sad that fusion / Davinci is bugging like that ...

Re: Fusion Clip won't render (new problem)

PostPosted: Mon Dec 13, 2021 3:29 am
by RockinRobFromDownUnder
Deliver page failures - Rendering Error - Fusion Transitions

Before I stumbled on this video:
John's Films
Rendering Failed - Davinci Resolve 17 - How to fix a rendering error

[apparently I am not allowed to post URL for his video]

I was getting Rendering Errors, but the playhead would be left all over the place. I disabled clips and my (some reasonably complex) Fusion comps wherever the playhead landed, to no avail.
After I followed John's instructions I still got Rendering Errors, but now the playhead landed in a more useful spot, and I discovered that it was 3 Fusion Transitions that I had dropped in from the Effects menu a few days ago.

I removed the Fusion Transitions and the project rendered successfully.

SPECS:
Running DVR 17.4
ASUS VivoBook s14 S410F,
Intel® Core™ i7-8550U Processor 1.8 GHz (8M Cache, up to 4.0 GHz, 4 cores)
12GB DDR4 ram
NVIDIA® GeForce® MX150, 2GB GDDR5
128GB M.2 SATA SSD, 1TB SATA 5400RPM 2.5" HDD