PsychoPy Builder components all have start and stop parameters to
control when stimuli are displayed, in particular this allows offsetting
the start of display.
I need to send a software event trigger at successive offset intervals from the start of the loop (whilst a video is playing).
This would be easy if it was a hardware trigger (eg using the parallel i/o component) but how can I easily do the same for a software trigger (to a separate application)?
I could use a code component and add code to run on every frame and monitor the time or count the number of frames but this is a pretty ugly solution.