I have a video, test.mp4, and an image, test.png.
test.mp4
test.png
test.png is a black image with a transparent \"hole\" in the center.
Try this:
ffmpeg -i test.mp4 -framerate 30000/1001 -loop 1 -i test.png -filter_complex "[1:v] fade=out:st=30:d=1:alpha=1 [ov]; [0:v][ov] overlay=10:10 [v]" -map "[v]" -map 0:a -c:v libx264 -c:a copy -shortest out.mp4