Onion skinning in motion tracker / frame difference view?

Support Compositing and Post Processing
1

I’m wondering if there’s any helpful tools I’m missing in the blender motion tracking / stabilization interface.

When I’m trying to fix tracks, I’m wondering if there is a way to see the previous / next key frame overlayed over my current frame so that I can more easily match the track.

I’m currently flipping back and forth between my last frame and current frame and making adjustments that would be super simple if I could just see a frame difference or onion skin style overlay.

2

Not related to Blender but sounds exactly like SimulTrack view in SynthEyes. It is a pretty useful tool, especially the possibility to adjust keyframes in simultrack view without having to jump to that exact frame.

Related vid: https://www.youtube.com/watch?v=2AlhmqD7tBQ