When transferring video from my iPhone, why does the default .MP4 file recorded using the gimbal automatically convert.  Video files not recorded with the gimbal do not need to be converted.  And this process is extremely slow.

Hi there. Thanks for reaching out. May we confirm where you are transferring the videos to? And what method do you use in transferring them? Moreover, in what format are they being converted? We look forward to hearing from you. Thank you.

I am transferring to my iMac via Image Capture.  The  resulting file is .MP4.

How do I set recorded video length for DJI mini 2? I previously could record up to beyond 15 minutes of video. Now my recordings automatically gets segmented to about 5 minutes segments.