Fieldmatch ppsrc crashes

[Viscerous]

Every attempt to use fieldmatch's ppsrc feature seems to crash ffmpeg unless the two input streams are identical (?).

I've been trying to eliminate residual combing on fade in/outs so I tried (other params removed for testing):

ffmpeg -i .\source.mp4  -map 0:v -c:v h264_nvenc -tune lossless -vf normalize preprocessed.mp4
ffmpeg -i .\preprocessed.mp4 -i .\source.mp4  -c:v h264_nvenc -tune lossless -filter_complex fieldmatch=ppsrc=1 output.mp4

I've tried using -report but the log doesn't really list anything interesting.

Windows' event viewer shows:

Faulting application name: ffmpeg.exe, version: 0.0.0.0, time stamp: 0x00000000
Faulting module name: msvcrt.dll, version: 7.0.22000.1, time stamp: 0x90483ed2
Exception code: 0xc0000005
Fault offset: 0x0000000000077e53
Faulting process ID: 0x2670
Faulting application start time: 0x01d80ad54d1fe1e7
Faulting application path: E:\Utilities\ffmpeg\bin\ffmpeg.exe
Faulting module path: C:\WINDOWS\System32\msvcrt.dll
Report ID: 32dfca74-d300-4da7-a7c3-c2e655ec7797
Faulting package full name: 
Faulting package-relative application ID: 

Running Windows 11 (22000.434).

EDIT:
I should've been paying more attention to the pixel formats, I forgot to set the one for the lossless encode and it looks like the filter definitely doesn't like gbrp that's used by default in this scenario. It works fine when using -pix_fmt yuv420p. Should ffmpeg handle this more gracefully though? Leaving this open just in case.

[Elon Musk]

Fixed in 891c3bef6fcaf54a953e05da9ab2d2c2d1f597d6