I see the problem in the ffmpeg call:
1920/1080:1 should be: 1920:1080 that happend due to a recent fix
Cu Selur
Ps.: will probably be home in ~2hrs will them compile a new dev version for testing.
"/Applications/Hybrid.app/Contents/MacOS/ffmpeg" -y -r 25/1 -i "/Volumes/temp/Hybrid Temp/_2021-09-15@18_48_11_0710__03.mkv" -i "/Volumes/temp/Hybrid Temp/iId_2_aid_0_2021-09-15@18_48_11_0710_01.aac" -vcodec copy -acodec copy -metadata encoding_tool="Hybrid 2021.09.15.1" -map 0:0 -map 1:0 -aspect 1920/1080:1 -r 25/1 -f mov "/Volumes/temp/QTGMC TESTS/BLACK SHEEP BOY (by James Molle) [2019 vimeo HD]-hybrid.mov"
1920/1080:1 should be: 1920:1080 that happend due to a recent fix

Cu Selur
Ps.: will probably be home in ~2hrs will them compile a new dev version for testing.
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.