Add speed output socket to Transform, Translate, Rotate, and Scale nodes

I was trying to add vector blur to fake camera movements in a video. Right now the process is quite cumbersome: after keyframing the desired transforms, you need to render the video, track it, and then use the track position node to plug the speed socket of the track position node into the speed socket of the vector blur node. Repeat for each transition.

It would be great to get the info from the Transform, Translate, Rotate, or Scale nodes and pass it onto the Vector Blur node directly. The main advantage of this would be mainly not to have to track anything.