That's odd. Could you try checking on a different device if you are able to hear the audio? Also, here are the troubleshooting steps for audio/video issues: https://goo.gl/p3eLvi . Keep us posted.
@TeamYouTube hi I just uploaded a video a few minutes ago and the audio seems a bit out of sync, please help.
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I can hear it fine it’s just out of sync with my mouth
End of conversation
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