Automatically remove "black frames"

[Bartoloni]

Selur, this is a clip starting with a black frame, and i have a crash processing with your script, can be possible to avoid the crash (not removing the initial black frames) ?
www.wcn.it/startblack.avi

very thank you if you can help me

Couldn't get free space in folder(), assuming zero.
delete C:\Users\Bfield\AppData\Local\Temp\iId_25_aid_1_DELAY_-43ms_2023-05-31@22_29_07_0910_01.wav
starting 2023-05-31@22_29_07_0910_05_video@22:31:46.237 - C:\Users\Bfield\Desktop\Nuova cartella (2)\crash.mkv
2023-05-31@22_29_07_0910_05_video finished after 00:00:00.591 with exitCode -1
Crashed with exit status 0
-> 2023-05-31@22_29_07_0910_05_video crashed: Crashed with exit status 0