Hi - I'm editing a short film using iMovie with the help of an external monitor.
Everything looks fine until I either export the file, or just use my laptop screen.
Use of the monitor seems to result in a slight audio lag which means I have to resync everything on the laptop before exporting.
This is a brand new Macbook pro and monitor, so I'm surprised by this fault. Any tips on what to do here?
Thanks.
MacBook Pro 13″, macOS 10.15
I was thinking about blue tooth speakers. Other than airplay connection to an iPad as an external monitor I’m not aware of blue tooth external monitor connection to a Mac.
In any event, try using the free download Handbrake to convert the video to Mp4/AAC, even if it is already that. Sometimes re-encoding clears up sync problems.
— Rich
You can get Handbrake here:
A simple way to do it is to export your video to your desktop and then
open Handbrake and do a File/Open Source.
Navigate to your video and choose it as the source from the resulting screen.
Then do File/Start Encoding. Wait a couple of minutes for the conversion to
complete. Then save and see if it will play without the audio lag.
-- Rich
If your external monitor is connected by blue tooth (if that's possilbe) that might cause the lag. If that is your situation, try connecting the monitor by hard wire.
-- Rich
There have been lags reported with Blue Tooth speakers. It has something to do with the Mac taking a split second to convert the signal.
-- Rich
No it’s a direct connection (I didn’t know Bluetooth was possible)
Thanks Rich, you raise a good point - I hadn't considered that the bluetooth speakers might be causing the delay (silly me).
I'll test this and see if it makes a difference.
Thanks!
R.
Audio sync issues when using external monitor
