I can confirm this. But I think this is a feature, not a bug. Actually there seem to be 4 modes. Like scale to ft height, fullscreen, letterbox, ??? - something like this. If your composition dimension is different to the clip (e.g. 16:10 vs 4:3) then you can experiment quite a bitterrabite wrote: Using 'scale to composition' I _always_ have to do it twice to make Arena actually scale the clips. I'm not sure if it should behave that way.

there is an option at layer level (a checkbox right next to the layer's width and height) once checked all clips of that layer are scaled to the composition size. But take care, this might has some strange side effects to clip/layer effects. (I prefer to scale my clips)terrabite wrote: What I would like to find is an option that scales a clip to the compo's size once it is dropped into a layer, automatically. Does such a function exist?