https://github.com/bozbez/win-capture-audio

An OBS plugin that allows capture of independant application audio streams on Windows, in a similar fashion to OBS's game capture and Discord's application streaming.
https://github.com/bozbez/win-capture-audio

Last synced: 28 days ago
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An OBS plugin that allows capture of independant application audio streams on Windows, in a similar fashion to OBS's game capture and Discord's application streaming.

• Host: GitHub
• URL: https://github.com/bozbez/win-capture-audio
• Owner: bozbez
• License: gpl-2.0
• Created: 2021-08-12T14:36:35.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-01-30T01:36:15.000Z (10 months ago)
• Last Synced: 2024-10-01T20:40:28.787Z (about 1 month ago)
• Language: C++
• Size: 160 KB
• Stars: 3,791
• Watchers: 50
• Forks: 206
• Open Issues: 137
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# win-capture-audio

An OBS plugin similar to OBS's win-capture/game-capture that allows for audio capture from a specific application, rather than the system's audio as a whole. This eliminates the need for third-party software or hardware audio mixing tools that introduce complexity, and in the case of software tools, introduce mandatory latency.

Internally it uses [ActivateAudioInterfaceAsync](https://docs.microsoft.com/en-us/windows/win32/api/mmdeviceapi/nf-mmdeviceapi-activateaudiointerfaceasync) with [AUDIOCLIENT_PROCESS_LOOPBACK_PARAMS](https://docs.microsoft.com/en-us/windows/win32/api/audioclientactivationparams/ns-audioclientactivationparams-audioclient_process_loopback_params). This initialization structure is only officially available on Windows 11, however it appears to work additionally on relatively recent versions of Windows 10.

**This plugin is in a BETA state, expect issues - [https://discord.gg/4D5Yk5gFnM](https://discord.gg/4D5Yk5gFnM) for support and updates.**


**An updated version of Windows 10 2004 (released 2020-05-27) or later is required.**

**Want to support the development of the plugin? [https://ko-fi.com/bozbez](https://ko-fi.com/bozbez)**

![overview](https://raw.githubusercontent.com/bozbez/win-capture-audio/main/media/overview.png)

## Installation and Usage

1. Head over to the [Releases](https://github.com/bozbez/win-capture-audio/releases) page and download the latest installer (or zip if you are using a portable installation)

2. Run the setup wizard, selecting your root OBS folder (`obs-studio/`, _not_ `obs-studio/obs-plugins/`) when asked (or extract the zip to the portable OBS root directory)

3. Launch OBS and check out the newly available "Application Audio Output Capture" source

## Troubleshooting

- **Application Audio Output Capture source not showing up after install:** this means that either your OBS is out-of-date (check that it is at least 27.1.x) or you have installed the plugin to the wrong location. To re-install, first uninstall via "Add or remove programs" in the Windows settings, and then run the installer again. Make sure to select the top-level `obs-studio/` folder in (probably) `C:/Program Files/`.

- **Application Audio Output Capture source not picking up any audio:** this happens when your Windows is too old and does not have support for the API. Note that even if you have a more recent major version such as `20H2` you will still need the latest updates for the plugin to work. If you are on a very old version you might need more than one update for this to work, and the second update might not show up for a few days after the first update.