When I record gaming for youtube, I'd have a cam recording myself and I'd have the gameplay, so there is 2 different video files. The gameplay is 1280x720 but the webcam is 640x480, when I pan/crop the webcam video to the corner, the aspect ratio stays the same, but when I try to to batch render videos with this layout the render will stop at 0-40% and not even show any signs of error. I can do a normal render one by one and it would work, but i'd like to use the batch render script. I believe the two video files conflict with each other as they have different aspect ratios, but is there something I'm missing?