Software that supports control of video recording via PC

[Francis]

I'm not asking to record from the camera directly onto the computer, I want a command-line solution for recording clips of certain length, then transferring to PC after recording is stopped.

The functionality exists, as it is included in EOS Utility, but I want it to be part of a scripted workflow (record video, do basic processing, add to playback queue. gphoto2 does not do this, it seems. Any suggestions?