win7 join fails - when resizing

Hi,

Audials Movie 2021 crashes after recording a clip on Win7. Win10 no problem. It happens not every time. I have recorded first clip with 3h - no problem. Second with 2min - no problem. 3rd with 20min - fails on joining stage. Parts in .recording are available. When first gets resized, than it crashes. Resizing on previous clips does not crash.

it crashes before reaching (... no WARN or any LOG why):

CAdaptiveStreamingJoiner::ConvertFragments(): file successfully resized to 

Any suggestions how to solve this, please? Thank you.

BR,

T21