premiere pro auto sizing videos.

[Mattspace]

I an currently working on a video that is made up of videos sent by many different people and obviously with many different cameras. When I insert tohe videos into the timeline, it automaticlly resizes them to fit the size of the video I inserted first (ie. zomming in on the larger video or making the smaller on tiny in the middle of the screen). Is there any way that I can have all the videos be the same size in the final video and not all different? 

[MarekMularczyk]

By default, Premiere does not resize videos, i.e. when you import a 4K video into Full HD sequence, it will be "zoomed in" and then you resize it manually.

However, there is a tickbox in Premiere Preferences where you can tell Premiere to resize clips automatically. Maybe you have it ticked?

[Mattspace]

I have the setting set to none. Maybe I need to resize them manually? I'm doing everything by defult and have nothing changed really. 

[MarekMularczyk]

If you have the setting set to None, then Premiere shouldn't be resizing the clips. You'd be resizing them yourself when needed.

[MarekMularczyk]

Premiere Preferences > Media > Default Media Scaling drop-down: