Scripted snippets for Adobe After Effects. Each of them has a usage/settings description in the commented section
Creates compostition markers for each layer in current selection. You can specify handles (before and after) to the lengths
Creates nulls for each of currently selected layers at their positions (also copying the rotation and scale)
This script enqueues/renders all of the current composition's areas where the selected layers present. It gives the names of the layers to the output files and adds handles (in seconds, before and after the layers ins/outs)
This script enqueues/renders all of the current composition's marker areas
Subframe layer nudge. Move it back and forth at a fraction of the frame length
Use them however you want. Run with the Script menu or add them as snippets to KBar or similar extension