addressed All video changed to the Smart phone video size

[Uncle Arty]

I'm creating a video that has video from a smartphone that is in the skinny rectangle protrait format.  When I add a video that is 4:3 (if i'm correct from the properties of the video), then I export, it  gets changed to the same format as smartphone video. I've tried different things and I cant find any posts related to his problem. 
Any help is greatly appreciated.

[borate]

Mixing 9:16 videos with a 4x3 image doesn't do that here.  The 4x3 isn't converted to portrait mode.

Set your export to a 16:9 (or close) resolution...  

Without seeing the project it's tough to diagnose.  Take a few minutes to share, and someone will come up with an answer for you...

The process is easy, quick and can be done privately.  Just follow these steps...

•     Back up --- With your project on the timeline, click on MENU at the top-left.  Click FILE|BACK UP PROJECT FILES TO FOLDER.  Choose a folder and SELECT FOLDER.
•     Upload ---  Use a free server - Google Drive, MS OneDrive, etc.* - to upload the saved, numbered FOLDER.    Do NOT upload the individual VPJ or export file. 
•     Get link --- Get a public link.  If using Google Drive click GET SHAREABLE LINK. If necessary change "restricted" to "anyone with the link can view" 
•     Share ---     Click COPY LINK | DONE.  Paste that link here, or click the folder at the top-right of this forum to message it privately to me.  It won't be shared.

          *    Before uploading, right-click the folder, click PROPERTIES.  Look at the File Size to confirm that it's not too big for the free space on the server.