3D PDF animation not rendering in 64 bit

[William at VC]

The attached 3D PDF has an animation of robot moving from one position to another (link is valid for 30 days).

The animation plays and renders the robot moving in 32-bit version of Adobe Reader v21.7.20099.454979. However, the animation does play but does not render the robot motions in 64-bit version of Adobe Reader.

The 3D PDF is generated by creating PRC or U3D model, and the animation is a stream of frames. Has anything changed in 64-bit Adobe Reader that requires the 3D PDF to be structured in a certain way?

I ask because other 3D PDFs available online do play the animation and render motions but upon inspection of those files and mine I notice they have some differences.

[Ria Tagra]

Hi @William at VC 

Hope you are doing well.

Could you please confirm the below details:

•  Is the issue happening with single file only? the one which you attached?
•  Try changing following settings in Acrobat and see if that resolves the issue:

1. Launch Acrobat > click Edit > Preferences > 3D & Multimedia
2. Under renderer options > click the preferred renderer to DirectX if it isn't already.
3. Uncheck the box enable hardware rendering for legacy video cards.
4. Click OK > relaunch Acrobat and try again.

For more help refer to: https://helpx.adobe.com/acrobat/using/enable-3d-content-pdf.html

Let us know how it works at your end. If you have any further queries please feel free to reach out to us.

Regards

Ria

[William at VC]

Hi @Ria Tagra,

It happens with every 3D PDF file generated by my company's software. The PDFs work as expected in 32-bit version but not 64-bit version of Adobe Reader. Customers in Nordic countries and Germany are experiencing the same issue.

About DirectX, this is very interesting. In 32-bit version, I can choose DirectX or Software. However, in 64-bit version I only have Software as option as shown in figure 1.

Figure 1. My Preferences in Adobe Reader for Finnish Windows with Language of English/International.

Could this then be Windows issue? This is my current OS:

Edition Windows 10 Pro
Version 21H2
Installed on ‎29/‎12/‎2020
OS build 19044.1348
Experience Windows Feature Experience Pack 120.2212.3920.0

[William at VC]

Some other 3D PDFs I found on the Internet do work with 64-bit but not the ones generated by my company's software. Was there any api change or format update for version 20 of the reader?

The software I use to generate the PDF uses HOOPS library by Tech Soft. I will contact them directly, but do you know if there is some registry change that needs to be made or some new way to format the PDF content?

[Mohit22992710surg]

Hi @William at VC did you managed to find out the actual problem? 

[William at VC]

Yes, bug with the U3D renderer in 64-bit Adobe Reader/Acrobat. It should work in 32-bit version, but you have to avoid it's automatic update to 64-bit until the bug is fixed. If the 3D PDF uses PRC file, you should not encounter this issue. This is all I know based on state back in December 2021.

[camilosebas]

What software are you using for exporting .prc animated files?

[William at VC]

I am not using any at the moment. The bug with U3D is still valid in 64-bit version at this time.

[Bdang]

@William at VC  I just got pushed to 64-bit and am experiencing the same issue with U3D/PDF animations. My company will be pushing the issue/but to the Adobe Enterprise support channel. I am guessing this still isn't resolved as I am on the latest 64-bit pro version and I am guessing, for some reason, this is not a high-priority bug as this issue has been around for some time now.

I wonder what the real issue is here. I heard that U3D was losing support and a dying file format. No clue if this is actually true as many software still support it.

[Bdang]

I was able to push my company to report the bug through their admin portal. The bug has been officially registered.

From Adobe:
"We have logged Bug ADC-4352159 with our engineering team for this issue. The bug is currently marked for fix in the September 2023 release of Adobe Acrobat DC."