Help! .mjpb video files all change to .mov on dowload!!!!

[Cannacular]

Good morning.  I downloaded a working .mjpb file added to encoder for output to mp4.  

NOW ALL .MJPB files convert to .MOV and ruin the files.  I need this auto translation to stop!!!!

[Peru Bob]

I've moved this from the poorly named Community Help forum (which is the forum for issues using the forums) to the AME forum so that proper help can be offered.