how long a video on quick time
how long a video can you make and send
iMac 21.5", macOS 10.15
Question marked as
QuickTime video timing has to be different for videos longer than about 10 hours, but longer is possible.
The usual limit is the free space on your drive for the temporary storage before saving a final file.
Sending videos may have limits that are not related to QuickTime per se, as it depends on which service you use for sending.