One of the most popular ways to use a virtual webcam output from OBS is with software such as Zoom. Use cases for virtual audio and video connections vary widely. These virtual audio and video connections allow you to use OBS with any software that leverages a standard webcam and microphone input. OBS is also capable of using virtual audio cables to connect audio from OBS to other applications on the same computer. OBS is capable of outputting a virtual video camera which can be used with software like Zoom as the webcam input. This is where virtual video and audio cables come into play with OBS. Many people who use video communications software, would like more control over their audio and video, but only have the ability to use a webcam and microphone as audiovisual inputs. It depends on how much video processing there is to do, which then affects how much the video is delayed, for which we need to then delay the audio accordingly.OBS has become a popular production solution for people who use video communications software such as Microsoft Teams and Zoom.
120ms is a good starting point, but have seen values of 200ms being necessary. That’s it! The value for the delay will depend on your exact setup. choose VB Cable output as the external app’s audio input source.pick the VB Cable as OBS Monitoring Device.delay the audio on the microphone (Advanced Audio Properties).microphone goes into OBS directly as input source.To keep it simple for the descriptions, I’m assuming we have a microphone as input, and headphones as output. Grab them, close OBS and install them, then restart your system before proceeding with the following steps. Audio Router – an optional utility that lets us route sources to destinationsīoth utilities are free.VB Cable – a virtual routable audio source/destination.Here’s an option that works, although I always forget how to route it properly (it’s for Windows only). What we need is a workaround until this functionality will be built-in to OBS (I’m sure it will at some point). There’s currently no built-in way to choose the OBS Audio in our external application, even though OBS itself has the ability to delay the audio and make it appear in sync. To make it look professional we need to add an audio delay Video processing takes a small amount of time, and as a result our audio arrives too early when used directly. This lets us use the OBS video output with external apps that do the streaming for us, like Zoom, Skype and Discord to name a few. Since version 26 of OBS we have that wonderful built-in Virtual Camera option.
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