Jump to: Board index » General » Fusion

Bug:Planar Tracker (FG only), output breaks on input manip.

Learn about 3D compositing, animation, broadcast design and VFX workflows.
  • Author
  • Message
Offline
User avatar

TheBloke

  • Posts: 1905
  • Joined: Sat Nov 02, 2019 11:49 pm
  • Location: UK
  • Real Name: Tom Jobbins

Bug:Planar Tracker (FG only), output breaks on input manip.

PostSun Sep 26, 2021 12:52 pm

Bug confirmed in: Fusion Studio 17.3.1 and Resolve Studio 17.3.1
Originally discovered/discussed here: viewtopic.php?f=21&t=147758

Bug: A Planar Tracker (PTra) node in Corner Pin -> FG only mode and connected to a downstream node has a high chance to display an incorrect, cropped image whenever the input image (PTra's green input) is altered in any way. This only occurs when a downstream node is viewed, not when the PTra itself is viewed.

Steps to recreate:
- Add a PTra and perform a track.
- Set PTra to Corner Pin, FG only.
- Pipe an input image to PTra's green (FG) input.
- Connect output of PTRa to a node such as Merge, Blur, Transform, Brightness/Contrast.
- View the PTra node itself in a Viewer.
- Manipulate the PTra's FG input image in any way, eg by adding/adjusting a Blur, Transform, ChangeDepth, etc, or altering the source image node itself (eg change Background settings).
- No problem: observe that the PTra's output image shows the expected result.
- Now view the node downstream of the PTra (eg a Merge), and repeat the alteration of the FG input.
- Bug: Observe that the image will quickly show a broken, cropped result.

Workaround:
- Connect the PTra output to a Dissolve node, then connect the Dissolve to the desired downstream node.
- The Dissolve can be set to pass-through, such that it's not functionally affecting the output at all.
- Repeat the above test and note that it now works fine.

Example comp showing what will or will not trigger the bug:
PlanarFGBug.comp.zip
(8.93 KiB) Downloaded 71 times

Image

Demonstration video:

Resolve Studio 17.4.3 and Fusion Studio 17.4.3 on macOS 11.6.1

Hackintosh:: X299, Intel i9-10980XE, 128GB DDR4, AMD 6900XT 16GB
Monitors: 1 x 3840x2160 & 3 x 1920x1200
Disk: 2TB NVMe + 4TB RAID0 NVMe; NAS: 36TB RAID6
BMD Speed Editor
Offline
User avatar

TheBloke

  • Posts: 1905
  • Joined: Sat Nov 02, 2019 11:49 pm
  • Location: UK
  • Real Name: Tom Jobbins

Re: Bug:Planar Tracker (FG only), output breaks on input man

PostFri Oct 08, 2021 7:17 am

Also occurs in 17.3.2.
Resolve Studio 17.4.3 and Fusion Studio 17.4.3 on macOS 11.6.1

Hackintosh:: X299, Intel i9-10980XE, 128GB DDR4, AMD 6900XT 16GB
Monitors: 1 x 3840x2160 & 3 x 1920x1200
Disk: 2TB NVMe + 4TB RAID0 NVMe; NAS: 36TB RAID6
BMD Speed Editor
Offline

birdseye

  • Posts: 349
  • Joined: Fri Jun 12, 2020 2:36 pm
  • Real Name: Iain Fisher

Re: Bug:Planar Tracker (FG only), output breaks on input man

PostFri Oct 08, 2021 1:54 pm

I don't mean to change the subject of your thread, I see what you see, but I notice in loading your comp that the GUI layout is one that I don't think I can get in Fusion alone. Is this comp layout native to Resolve only?
Edit I also notice if I make a slight change and save the comp it reverts to the normal layout, so that I think answers my question.
Another minor rough edge to this tracker is that the 'show grid' only attaches to the track for one play of each keyframe, then the grid detaches and needs to be re enabled for each view of a keyframe position.
Offline
User avatar

TheBloke

  • Posts: 1905
  • Joined: Sat Nov 02, 2019 11:49 pm
  • Location: UK
  • Real Name: Tom Jobbins

Re: Bug:Planar Tracker (FG only), output breaks on input man

PostFri Oct 08, 2021 2:59 pm

It's available in Fusion Studio: Window -> View Layouts -> Mid Flow:

Image

birdseye wrote:Edit I also notice if I make a slight change and save the comp it reverts to the normal layout, so that I think answers my question.
That's a bug I think, or just poorly implemented. I've seen weirdness like that too - eg when I open a comp that was saved in Mid Flow, but it defaults to the same flow I had already (default). Then I put something in a viewer and suddenly it jumps into Mid Flow.

But if you were in Mid Flow when you opened a comp that's in Mid Flow, no weirdness should happen.
Resolve Studio 17.4.3 and Fusion Studio 17.4.3 on macOS 11.6.1

Hackintosh:: X299, Intel i9-10980XE, 128GB DDR4, AMD 6900XT 16GB
Monitors: 1 x 3840x2160 & 3 x 1920x1200
Disk: 2TB NVMe + 4TB RAID0 NVMe; NAS: 36TB RAID6
BMD Speed Editor
Offline

NeoTrantor

  • Posts: 15
  • Joined: Sun Oct 04, 2020 11:06 pm
  • Real Name: Martin Schlosser

Re: Bug:Planar Tracker (FG only), output breaks on input man

PostSun Nov 20, 2022 8:15 pm

This is still present in 18.1, the workaround also still works though...
Offline

birdseye

  • Posts: 349
  • Joined: Fri Jun 12, 2020 2:36 pm
  • Real Name: Iain Fisher

Re: Bug:Planar Tracker (FG only), output breaks on input man

PostTue Nov 22, 2022 9:28 am

If you set the corner pin to the corners of the raster (all 0's and 1's) and then adjust the size on the Transform of the input image to eg. 0.9 I can see something strange. The output image viewed from the Merge2 appears at full size for some frames and then snaps to the smaller size at frame 47.

Something else, if you uncheck 'Clamp Coverage' during playback the problem goes away even if 'Clamp Coverage' is rechecked...unless you stop playback and purge the cache, then the problem will reappear at a different frame. 'Show Grid' also introduces another factor and of course the grid detatches from the track after one play of each keyframe unless the cache is purged or the corner pin is disabled and reenabled, then it attaches for one more playback of each keyframe. Some thing or things certainly need sorting out there.

Return to Fusion

Who is online

Users browsing this forum: No registered users and 37 guests