Music Out of Sync
"Music Out of Sync” refers to music timing that does not match on screen coincidence.
Music out of sync impacts Technical and Content quality of the asset. The customer experience is negatively impacted if timing of music is noticeably offset from on-screen cues. It can take them out of a seamless viewing experience.
Music is noticeably incongruous with on-screen visual cues or the visual pacing of a scene. Music that is directly tied to an on-screen character’s performance (playing an instrument) is out of sync by 2 frames or more.
How to Prevent:
Review audio on timeline and ensure it is properly aligned with on-screen action, as sync can easily shift during an edit.
Verify that audio and video have been recorded at the same frame rate.
M&E QC will help prevent out of sync music tracks from being duplicated in all dubs sourced from the M&E assets.
Fix music sync on timeline and re-export audio as needed. Check the M&E for the same issue, and redeliver M&E as well if necessary.