Question / Help OBS preview lags when media source is rtsp IP camera stream

Valko Ivanov

New Member

Stream delay in OBS preview window is around 1.2 - 1.5 seconds.
In reolink (that ip camera brand) client it is around 0.6-0.8 seconds.
In ONVIF device manager ver 2..2.250 there is almost no delay like quarter of second or less.

My target goal Is delay no more then half of second in preview.

My questions:

1.Is what is seen in preview window decoded rtsp stream or already transcoded rtmp stream (which may explain the delay)?
2.Any other ways to improve input camera to OBS lag?

log file



Active Member
In my experience, no.

I would use VLC to view the camera or the Reolink client and then either use VLC source, or display/window capture the Reolink software.