21.05.01 crashes when using OBS virtual camera as video input

What is your operating system?
Windows 10 Home

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?

Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)

When attempting to use OBS virtual camera in Shotcut as an Video/Audio device, it crashes (for me) in a few minutes.

  1. Open Shotcut
  2. Open Other - Audio/Video Device
    OBS Studio 26.1.1 (64 bit)

Crash Log: shotcut-log crash OBS virtual camera 210501.txt (34.0 KB)

OBS virtual camera works with version 21.03.21 just fine.
shotcut-log OBS virtual camera 210321.txt (34.3 KB)

Update: OS updated to Windows 10 20H2
Shotcut: 21.05.18
No crash with OBS virtual camera.

Thanks, I believe this was due to the FFmpeg downgrade.