so ive been editing videos from my gopro in premiere for ages and had no issue but now ive started using an extenal mic with my dslr and when i go to export and watch the video back the audio has drifted. it is matched up completely fine while i am editing its just as soon as i try to export the audio is no longer synced and is slower than the the clips being shown if anyone has any advice it would be a great help, thank you
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