Display Capture is ahead of VLC Video Source in stream

[jjwyndham]

I have a stream set up that include a display capture (slides from PowerPoint), a sound input (Behringer X32) and a PTZ camera input (Marshall CV 620) that I am streaming. I put a delay on the audio input of 1200 ms to get it to line up with the video input from the PTZ cameras, but the display capture is hitting the stream a couple of seconds before the camera/sound. This is making it tough for those who follow us on-line, because the slides are advancing too early. Any ideas? Thank you. - Jeremy

https://obsproject.com/logs/c_jTJyMCFab63VAS

 

[cyclemat]

why you use a mpeg source the cam has an SDI and an HDMI out ! what did you use to bring video into the PC ?

did you check the audio timing via monitoring or in a recording session ? use a recording to to bring the two in sync

 

[jjwyndham]

I am using a CAT6 network cable to connect the cameras to my network, and pulling their feeds into OBS using an rtsp input:
rtsp://[IP address]:8557/h264. My computer running OBS Studio is also connected to the same network. I need to use the network rather than SDI and HDMI so that I can move the computer around the room by time of year (always connecting to the network via Cat6 cabling).

I did check a recording, the delay is the same. When I advance the slide (Display Capture) based on the live performance, the video from the PTZ camera is delayed by about three seconds. I did get the audio (Behringer X32) and the video from the PTZ camera to line up with each other by using a sync offset of 1200 ms. If there was a way to similarly delay the image from the Display Capture, I think I could get everything to line up for the stream.

Any ideas?

 

[cyclemat]

okay have google the cam and didnt find one with an CAT6 conector !

the problem is when you delaying the picture he must save them all so

try the render delay filter

but my tip is use NDI

Kiloview HD HDMI NDI Videoencoder (E2/NDI) | Video Data

H.264 Streaming Box mit HDMI und NDI / HX Encoding zur Übertragung von Full HD (1920 x 1080 bis 60p) Video über IP via Ethernet oder WLAN, ermöglicht eine Live

www.videodata.de

so you didnt have latency

 

[jjwyndham]

Thanks. I'll check out the HDMI NDI videoencoder. In the meantime, I will try the render delay filter to see if I can delay the Display Capture. Thank you for your advice. By the way, your English is way better than my German. :-) Danka!