Question / Help Switching Scenes

vino

Member
When I switch my scenes on my streaming pc, it throws off my webcam audio out of sync. Does anyone know why? I've been looking into cam link. Would this fix it? I have my webcam on my streaming pc, but my audio comes from my mic and gameplay on my gaming pc. Would I have to do something like put my webcam on my gaming pc and do something like an NDI source to capture it? Just looking for the best way to keep it in sync. Any help is appreciative.
 

vino

Member
Mute the webcam mic.
I always have the webcam mic muted. I don't use that. The audio from my mic would just be out of sync as in u could see my lips move then my sound would come. and it's not a big delay but it would knock it off to where the viewers would notice it and tell me. and they say it's not too bad, but it's like once u see someone's audio out of sync, it's hard not to stare at it.
 

Sukiyucky

Member
You didn't describe your problem right. For if your webcam mic is muted, there would be no audio to capture into OBS for you to even know in your recordings and streams that its out of sync.
"it throws off my webcam audio out of sync"

It isn't your webcam audio (its muted). Its your mic audio output and webcam video output that are out of sync. A webcam capturing both audio and video is always in sync. It is not the same as a webcam capturing video only and an open mic attached to an audio interface. Those are two separate devices that know nothing about each other.

You have to tell OBS about the delay:
  • Go to OBS and click the cog wheel in the Mixer section for the mic
  • Advanced Audio Properties appears
  • Play around with the sync offset value for the mic (i.e. 500 for 500ms which is 1/2 second)
 

vino

Member
You didn't describe your problem right. For if your webcam mic is muted, there would be no audio to capture into OBS for you to even know in your recordings and streams that its out of sync.
"it throws off my webcam audio out of sync"

It isn't your webcam audio (its muted). Its your mic audio output and webcam video output that are out of sync. A webcam capturing both audio and video is always in sync. It is not the same as a webcam capturing video only and an open mic attached to an audio interface. Those are two separate devices that know nothing about each other.

You have to tell OBS about the delay:
  • Go to OBS and click the cog wheel in the Mixer section for the mic
  • Advanced Audio Properties appears
  • Play around with the sync offset value for the mic (i.e. 500 for 500ms which is 1/2 second)
Yeah sorry about that. You are correct. That is what i meant. So just deal with it when it when it happens? It starts out synced up. When I start playing with the transitions the webcam and mic get out of sync. I've seen videos on it, and I guess i'll play around with it. It just throws me off when everything starts up synced up perfectly only for me to switch transitions and It being thrown off.
 

Sukiyucky

Member
Are you using a USB hub? Don't use it to attach USB devices for recording and streaming. Even for competitive gaming.
Things like:
  • Webcam
  • Gaming Keyboard
  • Gaming Mouse
  • Microphone
  • Headphone
  • Audio interfaces (like FocusRite, AudioBox, etc.)
Plug these devices directly to your motherboard USB ports. They should get dedicated USB ports. It is why its better to not cheap out on a computer and motherboard. Get one that has plenty of USB 2.x/3.x/3.1x ports built in. USB hubs are good for connecting an external USB hard drive to transfer data to/from an internal hard drive. Terrible for transferring data on the same hub. Good for something like an Elgato StreamDeck, non gaming mouse, non gaming keyboard where critical and timely input isn't necessary.

Run a test. Create a scene and add your webcam only to it. Set the webcam to be 1920x1080 and point it at your face. Then start talking and hit the recording button. Count to 10. Then turn recording off. Go watch the video and adjust sync on the mic if needed.
 
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