How to stretch all clips

[Mlasy]

I need to stretch all clips to 16:9. I could not find a way to do it. I can only stretch every single clip one by one manually, which is very time consuming. Any idea how to automate this? Thanks

[borate]

Two approaches...

Select (highlight) the clips to be stretched, click on the FX icon in any one of those clips, then click on the green + sign.

Choose LETTERBOX in the Aspect Ratio section and specify a 16x9 ratio in the drop-down configuration box.

Click the sixth icon from the left on the toolbar (replace in chain) to apply this to all selected clips.

Or, during export, choose a 16x9 output format from the Resolution drop-down list.