I've updated my FCPX to 11th version and now every now and then when i playback my projects i hear that the audio is doubled. It has weird metallic feel. When i press pause and then playback again it dissapears. But it reappears in rendered project. I uploaded a youtube video and found lots of comments about the doubled audio in some parts of the video, but there is nothing wrong with the project.
MacBook Pro 16″, macOS 15.1
Same issue here with audio doubling on export randomly.
I notice it happens with synced clips (in my case, 1 boom and 1 lav on a multi clip). Audio is from Zoom F8NPro 32 bit float.
Troubleshooting: Restarted. Shut down and rebooted. Tried 3 different computers M1 Pro, M2 MAX, M2 ULTRA. Reinstalled FCPX. Deleted preferences. Checked for filters/effects but am not using any. Have added some filters/effects to see if that helps. Exported different audio settings. Exported audio as separate roles. Checked bit rate in project settings. Still no change.
I exported my lav and boom separately and brought it back into FCPX. I can see one of the tracks lines up with my edit just fine, the other seems to be shifted in one direction or another from clip to clip.
You can hear the problem occasionally during playback in fcpx timeline but then you can pause, start over and it goes away. I have some projects using the same audio clips exporting fine, but these specific projects keep doing it over and over. I have copied them into a brand new library with a brand new project and they still export with the same doubled audio. Huge glitch here I can't seem to troubleshoot on my end - would be great to get some apple support quick on this one.
Has anyone found a solution to this?
https://www.youtube.com/watch?v=YqpHrrETClY you can hear an example of this doubling at 33:03 timestamp.
I use FCPX for feature films editting. That really hard for to explain with director
Could you post a link to the offending YouTube video and also a screenshot of your timeline.
I used voice isolation and channel EQ effects. And I’m sure about my audio is mono.
You somehow applied the effects to one channel, not both. Simple as that.
but, when it double audio, I pause and play it again. The double audio was gone. and later when I hear it again, the double audio back. That's the bugs, not because of I using effects to one channel
Do not use dual mono channels. What you're hearing is a phase issue. When doing mono, only one channel should be active. Keep the second mono channel disabled, period.
FCPX 11 audio doubled issue
