obsproject / obsproject/obs-studio

App Audio Delay

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Dominant language
C
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Description

Operating System Info

Windows 11

Other OS

No response

OBS Studio Version

Other

OBS Studio Version (Other)

current nightly

OBS Studio Log URL

https://obsproject.com/logs/fOe5eca6j6wHGvaq

OBS Studio Crash Log URL

No response

Expected Behavior

App audio capture expected to be in sync with other audio sources/devices

Current Behavior

Currently, through some repeat testing and back and forth in dev channel in discord, it seems to be a fairly consistent 20ms or so delay on the app audio capture vs other audio sources.

Steps to Reproduce

1.add app audio capture
2.have another device playing same exact audio
3.record and check for a delay between the 2 on separate tracks
...

image

image

And here is part of where the conversation took place in discord
https://discord.com/channels/348973006581923840/374636084883095554/1160586435745816637

Anything else we should know?

very well may come down to just how the windows api behaves?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked OBS log and reproduce the issue on Windows 11 using the current nightly, following the listed app-audio and separate-device comparison steps. Compare the recorded tracks to determine where the reported delay occurs; done means app audio is synchronized with the other audio source or the Windows API limitation is documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
audio-video-rtc, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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