The UG has published a new version of its timecode best practices.
https://www.imfug.com/TR/timecode-in-imf/
Based on feedback from users and implementers, timecode tracks are now prohibited in IMF Track Files:
- processors that create Track Files shall not emit MXF Timecode tracks in any IMF Track File.
- processors that validate Track Files shall warn but not reject an IMF Track File if it contains an MXF Timecode track.
- In all other cases, processors shall ignore MXF Timecode tracks