Audio not synced

[Murray5E50]

I created a youtube video of a game i enjoy called apex legends. In adobe premier pro where i created it the audio is synced completely perfect and there is nothing wrong with it in general. When i used Adobe premier pro to upload the video using media, it uploaded it fine. when i got around to whatching my video on youtube, halfway through the audio is 1 second out of sync with the clip. I have checked my editing multiple times after and everthing is all right but not on the Youtube video. 

[Ann Bens]

If the footage is variable framerate convert to constant framerate with Handbrake before bringing into Premiere.

[Peru Bob]

Here is a tutorial:
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y