Hello,

 

I think with Adobe products like Premiere (I haven't used it in a while)   Uncompressed is default and you have to go into your "preferences" and change the  default to a codec,  or you need to create render profiles that you can choose from before output,  or just before you render, click on uncompressed, look at it's properties, then choose "Video For Windows" and then select the codec you want to use for your movie.

 

good luck