Constraints to f-curve not working as expected #53060

New Issue

Amir Shehata · 2017-10-13T19:49:06+02:00

Amir Shehata commented

2017-10-13 19:49:06 +02:00

System Information
Ubuntu Linux x86-64
Dual GTX 1060 6GB

Blender Version
2.79

Short description of error
After tracking video footage with tracks added to a new object (not the default camera). Linking empties. The resultant constraints on the empties can not be applied to an f-curve.

Exact steps for others to reproduce the error
0. Delete default cube from the scene

Open Video Clip Editor and import footage to be tracked
Add a new tracking object, by clicking the "+" button in the objects panel
Add trackers
Track footage
Hit the "Link Empty to Track" under the Geometry panel
Each empty has a "follow track" constraint
Hit the "Constraint to F-Cruve" button in the follow track constraint
Nothing happens. No keyframes are created.

If I go through the same procedure and do that for the default camera tracking object, it works.

Is this the expected behavior? Seems a bit confusing.

thanks for all the hard work.

**System Information** Ubuntu Linux x86-64 Dual GTX 1060 6GB **Blender Version** 2.79 **Short description of error** After tracking video footage with tracks added to a new object (not the default camera). Linking empties. The resultant constraints on the empties can not be applied to an f-curve. **Exact steps for others to reproduce the error** 0. Delete default cube from the scene 1. Open Video Clip Editor and import footage to be tracked 2. Add a new tracking object, by clicking the "+" button in the objects panel 3. Add trackers 4. Track footage 5. Hit the "Link Empty to Track" under the Geometry panel 6. Each empty has a "follow track" constraint 7. Hit the "Constraint to F-Cruve" button in the follow track constraint 8. Nothing happens. No keyframes are created. If I go through the same procedure and do that for the default camera tracking object, it works. Is this the expected behavior? Seems a bit confusing. thanks for all the hard work.

Amir Shehata commented

2017-10-13 19:49:06 +02:00

Changed status to: 'Open'

Amir Shehata commented

2017-10-13 19:49:06 +02:00

Added subscriber: @ashehata-4

ronan ducluzeau commented

2017-10-15 17:42:54 +02:00

Added subscriber: @zeauro

ronan ducluzeau commented

2017-10-15 17:42:54 +02:00

I can confirm that Constraint is not converted to an F-Curve if no camera tracking have been made.

If a marker is added to Camera tracking object and then tracked, clicking on the "Constraint to F-Curve" button will work on previously created empties refering to Object tracking object.

I can confirm that Constraint is not converted to an F-Curve if no camera tracking have been made. If a marker is added to Camera tracking object and then tracked, clicking on the "Constraint to F-Curve" button will work on previously created empties refering to Object tracking object.

Germano Cavalcante commented

2020-01-23 19:43:00 +01:00

Closed as duplicate of #58613

Germano Cavalcante closed this issue

2020-01-23 19:43:00 +01:00

Evan Wilson commented

2020-02-10 17:44:20 +01:00

Added subscriber: @EAW

Evan Wilson commented

2020-02-10 17:44:20 +01:00

I can duplicated what @zeauro and @ashehata-4 reported using 2.83 alpha.

Simply open the file below, and click on "Constraint to F-Curve" in any of the empty's constraints tab. Nothing will happen.

tracking_f-curves_to_cube_not_camera.blend

In the file below, I have copy and pasted the tracks from the "cube" object to the "camera" object in the motion tracker's side panel. If you then click on the “Constraint to F-Curve” button, it works as expected.

Im_doing_my_part_tracking2.blend

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.13

Blender Version
Broken: version: 2.83 (sub 1), branch: master, commit date: 2020-01-22 17:49, hash: e769be1f34

I can duplicated what @zeauro and @ashehata-4 reported using 2.83 alpha. Simply open the file below, and click on "Constraint to F-Curve" in any of the empty's constraints tab. Nothing will happen. [tracking_f-curves_to_cube_not_camera.blend](https://archive.blender.org/developer/F8298096/tracking_f-curves_to_cube_not_camera.blend) In the file below, I have copy and pasted the tracks from the "cube" object to the "camera" object in the motion tracker's side panel. If you then click on the “Constraint to F-Curve” button, it works as expected. [Im_doing_my_part_tracking2.blend](https://archive.blender.org/developer/F8298097/Im_doing_my_part_tracking2.blend) --- **System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 470/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 388.13 **Blender Version** Broken: version: 2.83 (sub 1), branch: master, commit date: 2020-01-22 17:49, hash: `e769be1f34`

Evan Wilson commented

2020-05-06 06:34:35 +02:00

Closed as duplicate of #76440

Evan Wilson closed this issue

2020-05-06 06:34:35 +02:00

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Constraints to f-curve not working as expected #53060