DJI Mavic / Spark - How do I change video format from MOV to MP4?

Hello I am still having problems with getting videos on YouTube Facebook and most of the drone forums.

My videos are MOV format want to know how can I get get MP4 videos. Thank you

Just change the video format settings in Go4.

The setting Dave mentions can be found here:

Thank you very much will try that regards Irvine ( Portsmouth )