Output video not created when input video doesn't contain audio track

[thekryz]

Not sure what's going on. I'm on Windows 10 and everything had been working fine. But after doing some updates, for some reason reve won't create the output video any more. I can see that the images are extracted and upscaled, then a temporary video file is created within the reve directories - but then the final video file is not created. On the cmd it says "Done." - but the result is clearly not there. I don't know how to debug or find additional information. Can you please help?

EDIT: The problem seems to be video without an audio track. Video clips with audio tracks still work.