The microphone works with an online mic check website. Below is the the most recent log file. Here is the relevant part where the microphone doesn't initialize:
16:40:53.105: WASAPI: Device 'Speakers (Plantronics .Audio 478 USB)' initialized
16:40:53.129: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.129: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.135: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.135: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.821: Switched to scene 'Scene'
Full Log:
16:40:38.874: CPU Name: Intel(R) Pentium(R) D CPU 3.20GHz
16:40:38.874: CPU Speed: 3192MHz
16:40:38.874: Physical Cores: 2, Logical Cores: 2
16:40:38.874: Physical Memory: 2943MB Total, 1255MB Free
16:40:38.874: Windows Version: 10.0 Build 17134 (revision: 112; 64-bit)
16:40:38.874: Running as administrator: false
16:40:38.875: Aero is Enabled (Aero is always on for windows 8 and above)
16:40:38.875: Windows 10 Gaming Features:
16:40:38.875: Game Bar: On
16:40:38.875: Game DVR: On
16:40:38.875: Game DVR Background Recording: Off
16:40:38.880: Sec. Software Status:
16:40:38.885: Windows Defender Antivirus: enabled (AV)
16:40:38.886: Windows Firewall: enabled (FW)
16:40:38.887: Windows Defender Antivirus: enabled (ASW)
16:40:38.894: Portable mode: false
16:40:39.331: OBS 21.1.2 (64bit, windows)
16:40:39.331: ---------------------------------
16:40:39.333: ---------------------------------
16:40:39.333: audio settings reset:
16:40:39.333: samples per sec: 44100
16:40:39.333: speakers: 1
16:40:39.338: ---------------------------------
16:40:39.338: Initializing D3D11...
16:40:39.338: Available Video Adapters:
16:40:39.342: Adapter 1: NVIDIA GeForce 8400 GS
16:40:39.343: Dedicated VRAM: 517668864
16:40:39.343: Shared VRAM: 1543170048
16:40:39.343: output 1: pos={0, 0}, size={1600, 900}, attached=true
16:40:39.347: Loading up D3D11 on adapter NVIDIA GeForce 8400 GS (0)
16:40:39.374: D3D11 loaded successfully, feature level used: 40960
16:40:42.885: ---------------------------------
16:40:42.885: video settings reset:
16:40:42.885: base resolution: 1600x900
16:40:42.885: output resolution: 708x400
16:40:42.885: downscale filter: Bicubic
16:40:42.885: fps: 30/1
16:40:42.885: format: NV12
16:40:42.885: YUV mode: 601/Partial
16:40:42.906: Audio monitoring device:
16:40:42.906: name: Default
16:40:42.906: id: default
16:40:42.930: ---------------------------------
16:40:43.047: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/chrome_elf.dll' not found, loading of module failed
16:40:43.097: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
16:40:43.552: [AMF] AMF Test failed due to one or more errors.
16:40:43.552: Failed to initialize module 'enc-amf.dll'
16:40:44.717: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libcef.dll' not found, loading of module failed
16:40:44.758: LoadLibrary failed for '../../obs-plugins/64bit/libEGL.dll': The specified procedure could not be found.
16:40:44.758: (127)
16:40:44.758: Module '../../obs-plugins/64bit/libEGL.dll' not loaded
16:40:44.841: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libGLESv2.dll' not found, loading of module failed
16:40:45.079: [browser_source: 'Version: 1.31.0']
16:40:46.948: LoadLibrary failed for 'nvEncodeAPI64.dll': The specified module could not be found.
16:40:46.948: (126)
16:40:50.946: Couldn't find VLC installation, VLC video source disabled
16:40:51.187: No blackmagic support
16:40:52.281: ---------------------------------
16:40:52.281: Loaded Modules:
16:40:52.281: win-wasapi.dll
16:40:52.281: win-mf.dll
16:40:52.281: win-dshow.dll
16:40:52.282: win-decklink.dll
16:40:52.282: win-capture.dll
16:40:52.282: vlc-video.dll
16:40:52.282: text-freetype2.dll
16:40:52.282: rtmp-services.dll
16:40:52.282: obs-x264.dll
16:40:52.282: obs-vst.dll
16:40:52.282: obs-transitions.dll
16:40:52.282: obs-text.dll
16:40:52.282: obs-qsv11.dll
16:40:52.282: obs-outputs.dll
16:40:52.282: obs-filters.dll
16:40:52.282: obs-ffmpeg.dll
16:40:52.282: obs-browser.dll
16:40:52.282: image-source.dll
16:40:52.282: frontend-tools.dll
16:40:52.282: enc-amf.dll
16:40:52.282: coreaudio-encoder.dll
16:40:52.282: ---------------------------------
16:40:52.282: ==== Startup complete ===============================================
16:40:52.285: Service '' not found
16:40:52.651: All scene data cleared
16:40:52.651: ------------------------------------------------
16:40:53.105: WASAPI: Device 'Speakers (Plantronics .Audio 478 USB)' initialized
16:40:53.129: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.129: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.135: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.135: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.821: Switched to scene 'Scene'
16:40:54.751: ------------------------------------------------
16:40:54.752: Loaded scenes:
16:40:54.752: - scene 'Scene':
16:40:54.752: - source: 'Display Capture' (monitor_capture)
16:40:54.752: - source: 'Audio Input Capture' (wasapi_input_capture)
16:40:54.752: - scene 'test':
16:40:54.752: - source: 'Display Capture' (monitor_capture)
16:40:54.752: - source: 'Audio Input Capture' (wasapi_input_capture)
16:40:54.752: ------------------------------------------------
16:41:09.675: ---------------------------------
16:41:09.675: [x264 encoder: 'recording_h264'] preset: veryfast
16:41:09.699: [x264 encoder: 'recording_h264'] settings:
16:41:09.699: rate_control: VBR
16:41:09.699: bitrate: 2500
16:41:09.699: buffer size: 2500
16:41:09.699: crf: 23
16:41:09.699: fps_num: 30
16:41:09.699: fps_den: 1
16:41:09.699: width: 708
16:41:09.699: height: 400
16:41:09.699: keyint: 250
16:41:09.699:
16:41:09.733: ---------------------------------
16:41:09.847: [FFmpeg aac encoder: 'Track1'] bitrate: 160, channels: 1, channel_layout: 4
16:41:09.847:
16:41:10.312: ---------------------------------
16:41:10.313: [FFmpeg aac encoder: 'Track2'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.313:
16:41:10.316: ---------------------------------
16:41:10.317: [FFmpeg aac encoder: 'Track3'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.317:
16:41:10.320: ---------------------------------
16:41:10.321: [FFmpeg aac encoder: 'Track4'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.321:
16:41:10.368: ==== Recording Start ===============================================
16:41:10.368: [ffmpeg muxer: 'adv_file_output'] Writing file 'F:/Media/Video/OBS Captures/2018-06-26 16-41-09.mp4'...
16:41:23.967: User switched to scene 'test'
16:42:09.048: [ffmpeg muxer: 'adv_file_output'] Output of file 'F:/Media/Video/OBS Captures/2018-06-26 16-41-09.mp4' stopped
16:42:09.049: Output 'adv_file_output': stopping
16:42:09.049: Output 'adv_file_output': Total frames output: 1733
16:42:09.049: Output 'adv_file_output': Total drawn frames: 1754 (1760 attempted)
16:42:09.049: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 6 (0.3%)
16:42:09.049: ==== Recording Stop ================================================
16:42:09.084: Video stopped, number of skipped frames due to encoding lag: 2/1761 (0.1%)
16:40:53.105: WASAPI: Device 'Speakers (Plantronics .Audio 478 USB)' initialized
16:40:53.129: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.129: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.135: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.135: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.821: Switched to scene 'Scene'
Full Log:
16:40:38.874: CPU Name: Intel(R) Pentium(R) D CPU 3.20GHz
16:40:38.874: CPU Speed: 3192MHz
16:40:38.874: Physical Cores: 2, Logical Cores: 2
16:40:38.874: Physical Memory: 2943MB Total, 1255MB Free
16:40:38.874: Windows Version: 10.0 Build 17134 (revision: 112; 64-bit)
16:40:38.874: Running as administrator: false
16:40:38.875: Aero is Enabled (Aero is always on for windows 8 and above)
16:40:38.875: Windows 10 Gaming Features:
16:40:38.875: Game Bar: On
16:40:38.875: Game DVR: On
16:40:38.875: Game DVR Background Recording: Off
16:40:38.880: Sec. Software Status:
16:40:38.885: Windows Defender Antivirus: enabled (AV)
16:40:38.886: Windows Firewall: enabled (FW)
16:40:38.887: Windows Defender Antivirus: enabled (ASW)
16:40:38.894: Portable mode: false
16:40:39.331: OBS 21.1.2 (64bit, windows)
16:40:39.331: ---------------------------------
16:40:39.333: ---------------------------------
16:40:39.333: audio settings reset:
16:40:39.333: samples per sec: 44100
16:40:39.333: speakers: 1
16:40:39.338: ---------------------------------
16:40:39.338: Initializing D3D11...
16:40:39.338: Available Video Adapters:
16:40:39.342: Adapter 1: NVIDIA GeForce 8400 GS
16:40:39.343: Dedicated VRAM: 517668864
16:40:39.343: Shared VRAM: 1543170048
16:40:39.343: output 1: pos={0, 0}, size={1600, 900}, attached=true
16:40:39.347: Loading up D3D11 on adapter NVIDIA GeForce 8400 GS (0)
16:40:39.374: D3D11 loaded successfully, feature level used: 40960
16:40:42.885: ---------------------------------
16:40:42.885: video settings reset:
16:40:42.885: base resolution: 1600x900
16:40:42.885: output resolution: 708x400
16:40:42.885: downscale filter: Bicubic
16:40:42.885: fps: 30/1
16:40:42.885: format: NV12
16:40:42.885: YUV mode: 601/Partial
16:40:42.906: Audio monitoring device:
16:40:42.906: name: Default
16:40:42.906: id: default
16:40:42.930: ---------------------------------
16:40:43.047: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/chrome_elf.dll' not found, loading of module failed
16:40:43.097: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
16:40:43.552: [AMF] AMF Test failed due to one or more errors.
16:40:43.552: Failed to initialize module 'enc-amf.dll'
16:40:44.717: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libcef.dll' not found, loading of module failed
16:40:44.758: LoadLibrary failed for '../../obs-plugins/64bit/libEGL.dll': The specified procedure could not be found.
16:40:44.758: (127)
16:40:44.758: Module '../../obs-plugins/64bit/libEGL.dll' not loaded
16:40:44.841: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libGLESv2.dll' not found, loading of module failed
16:40:45.079: [browser_source: 'Version: 1.31.0']
16:40:46.948: LoadLibrary failed for 'nvEncodeAPI64.dll': The specified module could not be found.
16:40:46.948: (126)
16:40:50.946: Couldn't find VLC installation, VLC video source disabled
16:40:51.187: No blackmagic support
16:40:52.281: ---------------------------------
16:40:52.281: Loaded Modules:
16:40:52.281: win-wasapi.dll
16:40:52.281: win-mf.dll
16:40:52.281: win-dshow.dll
16:40:52.282: win-decklink.dll
16:40:52.282: win-capture.dll
16:40:52.282: vlc-video.dll
16:40:52.282: text-freetype2.dll
16:40:52.282: rtmp-services.dll
16:40:52.282: obs-x264.dll
16:40:52.282: obs-vst.dll
16:40:52.282: obs-transitions.dll
16:40:52.282: obs-text.dll
16:40:52.282: obs-qsv11.dll
16:40:52.282: obs-outputs.dll
16:40:52.282: obs-filters.dll
16:40:52.282: obs-ffmpeg.dll
16:40:52.282: obs-browser.dll
16:40:52.282: image-source.dll
16:40:52.282: frontend-tools.dll
16:40:52.282: enc-amf.dll
16:40:52.282: coreaudio-encoder.dll
16:40:52.282: ---------------------------------
16:40:52.282: ==== Startup complete ===============================================
16:40:52.285: Service '' not found
16:40:52.651: All scene data cleared
16:40:52.651: ------------------------------------------------
16:40:53.105: WASAPI: Device 'Speakers (Plantronics .Audio 478 USB)' initialized
16:40:53.129: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.129: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.135: [WASAPISource::TryInitialize]:[Microphone (Plantronics .Audio 478 USB)] Failed to get initialize audio client: 80070005
16:40:53.135: [WASAPISource::WASAPISource] Device '{0.0.1.00000000}.{e1651f66-5d2a-45dc-abb7-c537e971130d}' not found. Waiting for device
16:40:53.821: Switched to scene 'Scene'
16:40:54.751: ------------------------------------------------
16:40:54.752: Loaded scenes:
16:40:54.752: - scene 'Scene':
16:40:54.752: - source: 'Display Capture' (monitor_capture)
16:40:54.752: - source: 'Audio Input Capture' (wasapi_input_capture)
16:40:54.752: - scene 'test':
16:40:54.752: - source: 'Display Capture' (monitor_capture)
16:40:54.752: - source: 'Audio Input Capture' (wasapi_input_capture)
16:40:54.752: ------------------------------------------------
16:41:09.675: ---------------------------------
16:41:09.675: [x264 encoder: 'recording_h264'] preset: veryfast
16:41:09.699: [x264 encoder: 'recording_h264'] settings:
16:41:09.699: rate_control: VBR
16:41:09.699: bitrate: 2500
16:41:09.699: buffer size: 2500
16:41:09.699: crf: 23
16:41:09.699: fps_num: 30
16:41:09.699: fps_den: 1
16:41:09.699: width: 708
16:41:09.699: height: 400
16:41:09.699: keyint: 250
16:41:09.699:
16:41:09.733: ---------------------------------
16:41:09.847: [FFmpeg aac encoder: 'Track1'] bitrate: 160, channels: 1, channel_layout: 4
16:41:09.847:
16:41:10.312: ---------------------------------
16:41:10.313: [FFmpeg aac encoder: 'Track2'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.313:
16:41:10.316: ---------------------------------
16:41:10.317: [FFmpeg aac encoder: 'Track3'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.317:
16:41:10.320: ---------------------------------
16:41:10.321: [FFmpeg aac encoder: 'Track4'] bitrate: 160, channels: 1, channel_layout: 4
16:41:10.321:
16:41:10.368: ==== Recording Start ===============================================
16:41:10.368: [ffmpeg muxer: 'adv_file_output'] Writing file 'F:/Media/Video/OBS Captures/2018-06-26 16-41-09.mp4'...
16:41:23.967: User switched to scene 'test'
16:42:09.048: [ffmpeg muxer: 'adv_file_output'] Output of file 'F:/Media/Video/OBS Captures/2018-06-26 16-41-09.mp4' stopped
16:42:09.049: Output 'adv_file_output': stopping
16:42:09.049: Output 'adv_file_output': Total frames output: 1733
16:42:09.049: Output 'adv_file_output': Total drawn frames: 1754 (1760 attempted)
16:42:09.049: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 6 (0.3%)
16:42:09.049: ==== Recording Stop ================================================
16:42:09.084: Video stopped, number of skipped frames due to encoding lag: 2/1761 (0.1%)