keep the first pts
Revert "keep the first pts"

This reverts commit 133cd998b0f1cfdab07e87312db7981eb61c23f9.
use sample rate OBS uses
Merge branch 'master' into dev
BrowserSource -> VideoSource and removed BrowserSourceListener
fixed audio being async with 'audio output to stream' option and fixed crackling
only use OBSGetAudioTIme() if its value is greater than lastTimestamp +10