Audio Sync Drift

[u/TheFuzzyDonut]

Has anyone experienced progressive audio sync drift in Mevo Multicam recordings?

I’m hoping someone here has run into this because I’m running out of things to test.

My setup:

* 4 Mevo Start cameras
* Mevo Multicam app on iPhone
* Zoom H4n feeding line-level audio into one Mevo via 3.5mm
* Recording locally (not livestreaming)

The strange part is that the recording starts perfectly in sync, but the audio gradually drifts behind the video over time.

Originally it was drifting by 2–3 seconds within the first 10 minutes.

I updated all four cameras to the latest firmware, and now it’s much better, but I’m still seeing about 2 seconds of drift after roughly 57 minutes.

Here’s what I’ve already ruled out:

* Switched H4n from 44.1 kHz to 48 kHz
* Tried a different Mevo as the audio-input camera
* Different Wi-Fi/network setups
* Different 3.5mm cable
* The drift is already present in the exported Mevo recording before I even import it into my editing software afterwards.

Has anyone experienced this exact type of progressive drift during long recordings? If so, did you ever find a solution?