Question / Help USB Audio Codec shows up - but no sound is coming though.

jwein83

New Member
I'm using a behringer mixer (x1204usb) - Everything was working fine and I've done a number of live streams with this mixer and OBS. Now, all of a sudden, with no settings being changed, the audio is going through the mixer fine but not showing up in OBS through the input meters. I tried recording to see if it was just the meters but no, no sound is coming in.

Sound works on other devices, like through my webcam but for some reason it won't take the sound from this mixer anymore.

I tried all the usual fixes - swapped usb ports, cables, restarted obs, mac...

OK - Literally as I was typing this....it started working again! I'm going to post this anyway because for about a day and a half it didn't...fn weird!

Log:

17:02:09.177: CPU Name: Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
17:02:09.177: CPU Speed: 2500MHz
17:02:09.177: Physical Cores: 2, Logical Cores: 4
17:02:09.177: Physical Memory: 16384MB Total
17:02:09.177: OS Name: Mac OS X (NSMACHOperatingSystem)
17:02:09.177: OS Version: Version 10.13.6 (Build 17G66)
17:02:09.177: Kernel Version: 17.7.0
17:02:09.249: hotkeys-cocoa: Using layout 'com.apple.keylayout.US'
17:02:09.250: Portable mode: false
17:02:10.065: OBS 25.0.7 (mac)
17:02:10.065: ---------------------------------
17:02:10.068: ---------------------------------
17:02:10.068: audio settings reset:
17:02:10.068: samples per sec: 44100
17:02:10.068: speakers: 2
17:02:10.168: ---------------------------------
17:02:10.168: Initializing OpenGL...
17:02:10.207: Loading up OpenGL on adapter Intel Inc. Intel HD Graphics 4000 OpenGL Engine
17:02:10.207: OpenGL loaded successfully, version 4.1 INTEL-10.36.19, shading language 4.10
17:02:10.343: ---------------------------------
17:02:10.343: video settings reset:
17:02:10.343: base resolution: 1280x720
17:02:10.343: output resolution: 1280x720
17:02:10.343: downscale filter: Bicubic
17:02:10.343: fps: 30/1
17:02:10.343: format: NV12
17:02:10.343: YUV mode: 601/Partial
17:02:10.343: NV12 texture support not available
17:02:10.344: Audio monitoring device:
17:02:10.344: name: Default
17:02:10.344: id: default
17:02:10.345: ---------------------------------
17:02:10.406: Failed to load 'en-US' text for module: 'decklink-ouput-ui.so'
17:02:10.470: os_dlopen(libpython3.7m.dylib->libpython3.7m.dylib): dlopen(libpython3.7m.dylib, 257): image not found
17:02:10.470:
17:02:10.470: [Python] Could not load library: libpython3.7m.dylib
17:02:10.796: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
17:02:10.796: No blackmagic support
17:02:10.891: [VideoToolbox encoder]: Adding VideoToolbox H264 encoders
17:02:11.340: [obs-browser]: Version 2.8.6
17:02:11.834: os_dlopen(/Applications/VLC.app/Contents/MacOS/lib/libvlccore.dylib->/Applications/VLC.app/Contents/MacOS/lib/libvlccore.dylib): dlopen(/Applications/VLC.app/Contents/MacOS/lib/libvlccore.dylib, 257): image not found
17:02:11.834:
17:02:11.834: Couldn't find VLC installation, VLC video source disabled
17:02:11.836: [obs-ndi] hello ! (version 4.7.1)
17:02:11.836: [obs-ndi] Trying ''
17:02:11.836: [obs-ndi] Trying '/usr/lib'
17:02:11.836: [obs-ndi] Trying '/usr/local/lib'
17:02:11.836: [obs-ndi] Found NDI library at '/usr/local/lib/libndi.4.dylib'
17:02:11.840: [obs-ndi] NDI runtime loaded successfully
17:02:11.841: [obs-ndi] NDI library initialized successfully (NDI SDK APPLE 14:35:05 Dec 19 2019 4.1.3)
17:02:11.844: ---------------------------------
17:02:11.844: Loaded Modules:
17:02:11.844: obs-ndi.so
17:02:11.844: vlc-video.so
17:02:11.844: text-freetype2.so
17:02:11.844: rtmp-services.so
17:02:11.844: obs-x264.so
17:02:11.844: obs-vst.so
17:02:11.844: obs-transitions.so
17:02:11.844: obs-outputs.so
17:02:11.844: obs-libfdk.so
17:02:11.844: obs-filters.so
17:02:11.844: obs-ffmpeg.so
17:02:11.844: obs-browser.so
17:02:11.844: mac-vth264.so
17:02:11.844: mac-syphon.so
17:02:11.844: mac-decklink.so
17:02:11.844: mac-capture.so
17:02:11.844: mac-avcapture.so
17:02:11.844: linux-jack.so
17:02:11.844: image-source.so
17:02:11.844: frontend-tools.so
17:02:11.844: decklink-ouput-ui.so
17:02:11.844: coreaudio-encoder.so
17:02:11.844: ---------------------------------
17:02:11.844: os_dlopen(../obs-plugins/obs-browser->../obs-plugins/obs-browser.so): dlopen(../obs-plugins/obs-browser.so, 257): image not found
17:02:11.844:
17:02:11.894: ==== Startup complete ===============================================
17:02:11.931: All scene data cleared
17:02:11.931: ------------------------------------------------
17:02:11.971: coreaudio: device 'USB Audio CODEC ' initialized
17:02:11.972: [Loaded global audio device]: 'Mic/mixer/usb'
17:02:12.022: coreaudio: device 'USB Audio CODEC ' initialized
17:02:12.022: [Media Source 'Media Source']: settings:
17:02:12.022: input:
17:02:12.022: input_format: (null)
17:02:12.022: speed: 100
17:02:12.022: is_looping: no
17:02:12.022: is_hw_decoding: no
17:02:12.022: is_clear_on_media_end: yes
17:02:12.022: restart_on_activate: yes
17:02:12.022: close_when_inactive: no
17:02:12.111: adding 92 milliseconds of audio buffering, total audio buffering is now 92 milliseconds (source: mixer)
17:02:12.111:
17:02:13.019: Webcam: Selected device 'HD Pro Webcam C920'
17:02:13.027: Webcam: Using preset 1280x720
17:02:13.223: [obs-ndi] started A/V threads for source 'MACS-MACBOOK-PRO.LOCAL (OBS)'
17:02:13.223: [obs-ndi] A/V thread for 'NDI™ Source' started
17:02:13.346: Switched to scene 'CrashChessDummy'
17:02:13.346: ------------------------------------------------
17:02:13.346: Loaded scenes:
17:02:13.346: - scene 'CrashChessDummy':
17:02:13.350: - source: 'Chessbattle' (image_source)
17:02:13.350: - source: 'Webcam' (av_capture_input)
17:02:13.350: - source: 'Window Capture' (window_capture)
17:02:13.350: - source: 'CCD logo' (image_source)
17:02:13.350: - source: 'CCD piece' (image_source)
17:02:13.350: - source: 'mixer' (coreaudio_input_capture)
17:02:13.350: - scene 'DJ stream':
17:02:13.350: - source: 'Background' (image_source)
17:02:13.350: - source: 'back 2' (image_source)
17:02:13.350: - source: 'logo' (image_source)
17:02:13.350: - source: 'Mic/mixer/usb' (coreaudio_input_capture)
17:02:13.350: - source: 'NDI™ Source' (ndi_source)
17:02:13.350: - source: 'Webcam' (av_capture_input)
17:02:13.351: - scene 'DJ - modern tv':
17:02:13.351: - source: 'tv on wall' (image_source)
17:02:13.351: - source: 'Mic/mixer/usb' (coreaudio_input_capture)
17:02:13.351: - source: 'ipad/cam group' (group)
17:02:13.351: - source: 'ipad' (image_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'NDI™ Source' (ndi_source)
17:02:13.351: - source: 'logo' (image_source)
17:02:13.351: - source: 'Media Source' (ffmpeg_source)
17:02:13.351: - source: 'Social links' (image_source)
17:02:13.351: - scene 'DJ - modern tv (L)':
17:02:13.351: - source: 'Mic/mixer/usb' (coreaudio_input_capture)
17:02:13.351: - source: 'Main' (group)
17:02:13.351: - source: 'tv on wall' (image_source)
17:02:13.351: - source: 'NDI™ Source' (ndi_source)
17:02:13.351: - source: 'ipad/cam group' (group)
17:02:13.351: - source: 'ipad' (image_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'logo' (image_source)
17:02:13.351: - source: 'Media Source' (ffmpeg_source)
17:02:13.351: - source: 'Social links' (image_source)
17:02:13.351: - scene 'DJ - theatre':
17:02:13.351: - source: 'Theatre' (image_source)
17:02:13.351: - source: 'NDI™ Source' (ndi_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'logo 2' (image_source)
17:02:13.351: - source: 'logo low' (image_source)
17:02:13.351: - source: 'Social links' (image_source)
17:02:13.351: - scene 'DJ - old tv':
17:02:13.351: - source: 'TV background' (image_source)
17:02:13.351: - source: 'ipad/cam group 2' (group)
17:02:13.351: - source: 'ipad' (image_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'logo' (image_source)
17:02:13.351: - source: 'NDI™ Source' (ndi_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'Social links' (image_source)
17:02:13.351: - scene 'DJ - old tv (L)':
17:02:13.351: - source: 'TV background' (image_source)
17:02:13.351: - source: 'ipad/cam group 2' (group)
17:02:13.351: - source: 'ipad' (image_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'logo' (image_source)
17:02:13.351: - source: 'NDI™ Source' (ndi_source)
17:02:13.351: - source: 'Webcam' (av_capture_input)
17:02:13.351: - source: 'Social links' (image_source)
17:02:13.351: - source: 'Towlie gif' (image_source)
17:02:13.351: - source: 'Bart ' (image_source)
17:02:13.351: - source: 'towlie ' (image_source)
17:02:13.351: ------------------------------------------------
 

Northwood

New Member
having the exact same problem, with no resolution
using an alesis mixer instead of behringer
OSX 10.15.6
OBS 25.0.8
 
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