Pre-analysis (--pa) causes no output

[mvildosolae]

Hello,

It seems I've hit a bug (I don't know if it's related to VCEEnc or to the drivers).

When using --pa, the encoding gets stuck and doesn't finish. When logging debug output, this appears repeated several times:

[AMFDecoderUVDImpl] 2026-08-16 19:00:52.197      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.199     3AB4 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::SubmitInput() : format (NV12), memory (DX11), width (800), height (576)
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.202      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.204     3AB4 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::SubmitInput() : format (NV12), memory (DX11), width (800), height (576)
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.206      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.210     3AB4 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::SubmitInput() : format (NV12), memory (DX11), width (800), height (576)
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.211      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.212     2C90 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::QueryOutput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.214     3AB4 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::SubmitInput() : format (NV12), memory (DX11), width (800), height (576)
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.216      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFPreAnalysisImpl] 2026-08-16 19:00:52.219     3AB4 [AMFPreAnalysisImpl]   Debug: AMFPreAnalysisImpl::SubmitInput() : format (NV12), memory (DX11), width (800), height (576)
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.222      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFEncoderCorePAImpl] 2026-08-16 19:00:52.222     3AB4 [AMFEncoderCorePAImpl]   Error: C:\constructicon\builds\gfx\six\26.10\drivers\amf\stable\runtime\src\components\EncoderCore\EncoderCorePAImpl.cpp(1363):PA waited for encoder for 2 sec but encoder queue is still full
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.226      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFEncoderCoreAv1] 2026-08-16 19:00:52.228     3AB4 [AMFEncoderCoreAv1]   Debug: AMFEncoderCoreAv1Impl::QueryOutput()
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.230      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFEncoderCoreImpl] 2026-08-16 19:00:52.230     3AB4 [AMFEncoderCoreImpl]   Debug: GetProperty(Av1PictureManagementMethod), 1
[AMFDecoderUVDImpl] 2026-08-16 19:00:52.233      9B0 [AMFDecoderUVDImpl]   Debug: AMFDecoderUVDImpl::SubmitInput()
[AMFEncoderCoreImpl] 2026-08-16 19:00:52.233     3AB4 [AMFEncoderCoreImpl]   Debug: SubmitInput() : format (NV12), memory (DX11), width (800), height (576)

Specs and environment:

VCEEnc (x64) 9.12 (r2521) by rigaya, Aug  9 2026 11:12:58 (VC 1944/Win)
OS:            Windows 11 x64 (26100) [UTF-8]
CPU:           AMD Ryzen 7 5700X 8-Core Processor [3.81GHz] (8C/16T)
GPU:           AMD Radeon RX 7800 XT [32.0.31021.5001]
AMF:           Runtime 1.5.2 / SDK 1.5.0

I'm attaching the longer log with the verbose output after issuing the command.
pa_issue_vceenc.txt

Thank you in advance for your help, your encoders are very useful!

[rigaya]

Thank you for reporting the issue with a detailed information, I fixed this application getting stuck in VCEEnc 9.13.