[Windows] The first frame of the recorded videos are black when using D3D12 #476
Description
Unity version
6000.0.51f1
Unity editor platform
Windows
AVPro Movie Capture edition
Full
AVPro Movie Capture Version
5.3.0
Which Windows version(s) are you using?
Windows 11 Pro
Which graphics API(s) are you using?
Direct3D 12
Hardware
13th Gen Intel(R) Core(TM) i9-13900HX 2.20 GHz
Nvidia GTX 4070 8gb
32.0 GB RAM
2.79 TB Storage
Which capture component are you using?
Capture From Screen
Capture mode
Realtime
Which output mode are you using?
Video file
Video codecs
H264
Audio source
Unity
Audio codecs
AAC
Any other component configuration
- Render Pipeline: HDRP
The issue
The first frames of the recorded videos are black. This flash does not happen in Unity 2023.1.20f1.
- We already; fade a black overlay out, render a few warm-up frames (explicit Camera.Render() + WaitForEndOfFrame()), skip ~10 frames before arming capture.
- We tried starting capture on the nextframe boundary, deffering UI/audio/thumnail code: still reproduces the issue
- We implemented a content-aware gate: the camera was downsampled to a 64x64 temp RT and we performed AsyncGPUReadback to compute average luminance. We only allowed a capture when the frame is non-black. The probe reported that it was non black but the first encoded frames are still black.
The UseWaitForEndOfFrame property had no effect on the issue, same with start delay.
For context these are Tour videos, the camera follows a walking path around a room and records as it does, it's a fairly simple implementation.
A couple of questions:
- Is Unity 6 supported? (We are in the process of upgrading to this)
- Has the issue been reported before? (I've been unable to find any matching bugs)
I will try and send an email with an example video.