Please, can anyone point me to any information about the level of accuracy required when syncing of Audio (non-verbal) and Video; and if there are any 'well known' rules about allowing either Audio or Video to occur out of sync.
I may have devised a way to convert the events in a Midifile into keyframe markers in After Effects. This would make it easy to, for example, to display the letter "B" briefly whenever a bass drum gets played.
Video has a slower sample rate than MIDI, so one can only sync the event to the nearest video frame.
I seem to recall (decades ago) being advised that Audio changes should precede Video changes, by a few frames. Is there any truth in this? I had assumed it either because human brains prefer it like that, or perhaps it was a rule when using very old equipment.
My apologies if I have posted in the incorrect forum.