@mark Congratulations and thank you for what you have created. Many years of music making and creativity to you on your new path. We are so lucky you created Isadora and nurtured it into what it is today. You've inspired a huge community!
Ditch the MTC Movie Locker actorPlace a fresh Movie Player actor (or unhide the hidden inputs on the one you've got from the screenshot)Right-click the Movie Player actorSelect "Use Timecode" from the contextual menuThe Movie Player's position inputs and outputs will switch to TimecodeUse a Timecode Calculator actor connected to the relevant input on the Movie Player to add or subtract as needed to deal with your offset