I'm using a DJI Action 2 with the DJI Wirelss mic.  The wireless audio track was baked into the video and a separate audio track was recorded internally on the wireless transmitter. as a backup.  I snyced the audio tracks in FCPx with 4K 29.97 project settings.  I double clapped at the beginning and snyced up the two audio tracks.  A min or so down the timeline the audio drifts (out of sync).  How can this be?  Question: is the action 2 4K30P really 30.00P or 29.97?  It might explain why the audio clips don't stay synced.  If indeed the action 2 records at 30.00P then wow, that's a shocker.  Thanks for any insight.

I'm using a DJI Action 2 with the DJI Wirelss mic.  The wireless audio track was baked into the video and a separate audio track was recorded internally on the wireless transmitter. as a backup.  I snyced the audio tracks in FCPx with 4K 29.97 project settings.  I double clapped at the beginning and snyced up the two audio tracks.  A min or so down the timeline the audio drifts (out of sync).  How can this be?  Question: is the action 2 4K30P really 30.00P or 29.97?  It might explain why the audio clips don't stay synced.  If indeed the action 2 records at 30.00P then wow, that's a shocker.  Thanks for any insight.