[Windows] HDRP Capture From Camera 360 produces intermittent black cubemap face with volumetric fog/light in 4096x2048 offline capture

[GamerTheBrother]

Unity version

2021.2.10f1

Unity editor platform

Windows

AVPro Movie Capture edition

Full

AVPro Movie Capture Version

5.3.5 - Note: runtime init log reports plugin v5.3.4f1-ultra

Which Windows version(s) are you using?

Windows 11

Which graphics API(s) are you using?

Direct3D 11

Hardware

CPU: AMD Ryzen 9 9950X3D
GPU: NVIDIA GeForce RTX 3090 Ti
GPU driver: 32.0.15.9186
RAM: 128 GB
OS: Windows 11 Pro 64-bit

Which capture component are you using?

Capture From Camera 360

Capture mode

Offline

Which output mode are you using?

Video file

Video codecs

H264

Audio source

None_

Audio codecs

None_

Any other component configuration

Render pipeline: HDRP 12.1.4
Output resolution: 4096x2048 MP4
Frame rate: 60 fps
Cubemap face resolution: 2048
Cubemap depth: 24
Anti-aliasing: 8x
Stereo: Off
Render 180: Off
Support GUI: Off
Support Camera Rotation: Off
Volumetric fog is enabled in the active Global Volume.
Bloom is also enabled.
Issue happens during a volumetric/fire-heavy part of the timeline

We reproduced the issue on stock AVPro Movie Capture 5.3.5.
We also tested Blend Overlap = 35 and the issue still remained.

The issue

When using Capture From Camera 360 (VR) in an HDRP scene with volumetric fog / strong volumetric lighting, one (or many sometimes) full cubemap face intermittently renders black during capture.

The output is a 4096x2048 equirectangular video. In the AVPro 360 preview and in the rendered output, a full black face appears as a large black block / cylinder in the equirect image. The black face can appear in different positions depending on the run, but it is always a full face-sized failure rather than a small seam.

One (Or many) cubemap face intermittently renders black, producing a large black section in the equirectangular output.

Notes:

• This appears related to HDRP volumetric rendering / temporal behavior rather than normal stitching seams.
• Blend Overlap did not fix it.
• No AVPro-specific runtime error is logged when the black face appears.

Log output

No AVPro-specific error is logged when the black cubemap face appears.

[Reuben-RH]

Hi @GamerTheBrother
We Cant seem to replicate this issue, would it be possible to send us a basic reproduction project/scene to unitysupport@renderheads.com so we can try to replicate it internally?