On the DMSS app homepage - click playback.
Select the channel you want to view, change the date, record type, and time.
You can also backup footage from your phone by clicking the scissors > “play” icon > adjusting the times on the timeline > “stop” button
These steps save the backup footage into your files.
Go back into your homepage and click “me” > My Files > and download footage direct to your phone.
*transfer footage to computer to save file as MP4*.
Video below for reference.