Great! that worked nicely. I'll post the file to the board. From this I take it, that, generally speaking, I should start any new production as 16:9. Then, after doing my editing, Export it the same way as I did with this file. Boy, there sure are a lot of hidden skeletons in this program.
OK. we got another problem Houston. I tried to upload the file called "test 2.mp4" and got the following message: "Error You aren't permitted to upload this kind of file" It's only 19.6 MB.