Could not initialize the playback engine for the sequence

When trying to playback a recorded MP4, the following issue arose "Could not initialize the playback engine for the sequence". I have updated video drives and Windows 10. I've restarted the PC and HitFilm resulting in the same issue.

HitFilm Express 15

Version: 15.1.10413.7203

Windows 10 Home 64 Bit

I7-10700 @ 2.90GHz (16 CPU)

32GB Ram

NVIDIA Geforce RTX 2070

MP4

I also run OBS Studio, VoiceMeter Banana, and EarTrumpet for stream purposes.