Arena: Scaling / Positioning & Advanced Output

[Andy_Funktioncreep]

I have an HD video capture to Arena, consisting of 4x SD camera feeds in a square arrangement (think security camera multi-monitor type image). I want to have each camera as a separate clip, so I can video mix between them... And also use the Advanced Output to map the composition.

If I don't used the Advanced Output, it's an easy task - Just using the clip properties on each of the 4 copies of the source to scale and position each clip.

However, using the Advanced Output, when a clip's scale and position have no effect, the only way I've found of doing it is to create 4 layers with the camera feed on each one, then create a slice for each layer and map each slice's input source / output transformation in the Advanced Output window.

Is there an easier way? Thanks

[Zoltán]

advanced output is not what you are looking for.

make 4 copies of your camera clip,
use the crop effect to crop away 3 sources, on each of the 4.
then you can scale up the clip to desired size.

[Andy_Funktioncreep]

Cheers for that - Always forget just how useful the crop effect is.

For this comp, the advanced output is necessary to map the video on to the irregular surface I'm projecting on to.

However, right after trying that, I noticed that the scale and X/Y position are now working perfectly in the advanced output, so I think the fault was with the machine I was working on. Guess it's maybe time to do a reinstall...

Best,

A.