Want to launch RASPIVID at startup (preview/display to HDMI) abd be able to stop RASPIVID (either by keypress or button press)

Question

I have tried multiple ways of launching "raspivid -t 0" at startup, but there is never a decent way to stop or kill it?

Has anyone actually solved this issue?

CTRL+C only works is if I launch raspivid from a terminal, and then CTRL+C from that terminal. But, launching it from a simple bash/.sh does not allow that. I also tried to launch a terminal (using "x-terminal-emulator" in the .sh).

All I want to do is:

1. launch video at startup to HDMI (raspivid preview is great)
2. Be able to stop the video (if there is a need to troubleshoot and for safe shutdown, either directly on the device w/USB keyboard/mouse or via VNC) (3. I plan to add a power button to the setup as well for safe shutdown and boot, but I want to solve #2 above first)

Any suggestions?