Question / Help Audio sync mismatch

miskim80

New Member
Hi,
I have using OBS for youtube stream.
My capture card id Decklink 4k sdi.
In the early of stream A/V's sync is correct.But time past 12 more hours A/V mismatch their sync.
Generally audio follow video 3sec later.
So I did whatever I can. e.x) uncheck timestamp. upgrade firmware, driver of decklink.
Could you tell me how can fix this?
 
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