Adding Synced text to movies

How do I add synced text to a video in qmidi 2.5? When I click on the mirror window with my video the edit and sync features are not available. Is it possible to add synced text over a moving video instead of a still pic?

Select the karaoke window and choose edit from the karaoke menu. Or drag & drop a text file over the karaoke window.

Take note that the synced text will be displayed in the karaoke window and the video on the mirror window. It's mainly for piano bar players which use this feature to read lyrics on the mac and display some video to the audience.

Check this:
https://forum.mixagesoftware.com/QMidi-Pro-2-9-beta-1-available-for-testing-tp1667.html