Question / Help Why Logitech C920 image is always drifted to audio ?

Dihelson

Member
When I capture on OBS using my Logitech C920 and an external sound capture device, in order to synchronize audio to video, I need to drift audio about 100ms on the advanced properties. The problem doing that is that all other audio sources would be desynchronized, DSLR cameras, VLC video files... When I create a second audio source for the rest of the sources without applying 100ms, I then get a delay between the two sources, and an echo happens. So, why my webcam needs audio synchronization in the first place ? Why it doesn't work exactly on time as the other sources on the system ? This problem happens to everyone using Logitech C920 or just to me ? Why it happens ?

Thanks for any explanation.
 
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