![]() No audio processing at all in OBS.or at least not configured for it that's the external mixer's job. ![]() I have multiple cameras feeding individually into OBS, and a finished soundtrack from an external hardware mixer through a USB interface. I normally have OBS running continuously for an entire morning (about 4 hours) for a full-tech rehearsal, break, and then a live stream and backup recording for about 1.5 hours. I have the same problem on Ubuntu 20.04, updated weekly from the repositories. I'm just a user trying to figure out how to fix the audio lag issue. I have not made any decisions regarding the development of OBS. Hey I'm not sure what decision you're referring to, or why this is addressed to me personally. But please consider the consequences of these decisions. I appreciate this is an open-source project and the community can decide to spend their time on things that are more fun to do. So this makes OBS completely useless for any online services like Zoom, Webex or Teams, and I hate that I have to tell people to use crap like splitcam instead of OBS, which used to be the de-facto standard for video production. It is great that OBS introduced the virtual camera, but it is currently completely useless, as it does not feature virtual audio, and the ridiculous workaround through the audio monitor is unusable due to the latency issue. Anyway, we need someone who understands the subsystems of one of these two OSes to analyze this OBS is currently unusable for anything else than recording or perhaps streaming to a few services. Therefore im thinking, something is wrong within the Interesting, so it may actually be a bug of OBS. Then the lag of (half / full second) is The fastest way I have found to fix the lag is by selecting the mic source in the sources panel, clicking on the drop-down "Device" that's in the above panel, selecting another source, clicking again, selecting my mic as source. I get a lagging when ever I open the Filters on my Mic and to remove the Lag, I disable the monitoring and then activating it back. The only workaround is to restart OBS every 10 minutes. Using different apps to record the test video.playing with (muting/unmuting etc) various settings in OBS, MacOS's MIDI audio device panel and MacOS's Sound panel.The following things do not solve the problem, once it manifests: The default scene is the only one there, and is empty. No video inputs or other audio sources configured in OBS. No other CPU/RAM/GPU intensive programs are running on the Mac. I'm using a Trust USB microphone as a source. Observe that there is now a delay between lips and audio. Wait 20-30' (Photo Booth doesn't need to be open).Watching the recorded video, observe your lips and note that there is no or minimal delay between audio and video. Say "test" and stop recording after a couple seconds. Record a video with the webcam showing your face.Hold Option and click on the audio icon at the top system bar, select BlackHole as the input device.In the audio mixer panel (lower center), click the cog of the mic source > Advanced audio properties > next to Mic/aux, under audio monitoring, select monitor & output.In obs, settings > audio > Mic/Aux audio: select a microphone. ![]() Install OBS and either BlackHole ( brew install blackhole) or VB-Cable.(Log attached in following comment, to keep this field short) Steps to Reproduce Over time this increases, reaching more than 1 second lag after 90 minutes of having OBS running. After a few minutes (as low as 10), there is a noticeable delay added to the audio stream that is output to the monitor. When I first start OBS, the audio is delivered to the monitor with minimal lag. OBS Studio version: 26.0.2 Expected BehaviorĪudio output of OBS should be delivered with minimal lag/latency/delay to the audio monitor output Current Behavior Operating system and version: Mac OS 10.15.7
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