Why are the length of all videos 8 minutes 30 seconds when shooting 4K videos?
When shooting 4K videos, it will generate 450M of data per minute.
• If using 16GB or smaller micro SD card your file size will be limited to 4GB.
• If using 32GB or larger micro SD card your file size is only limited by your card's capacity.
To create files larger than 4GB you must go to camera Settings > File Size > Max.