INTERACT FORUM

Windows => Television => Topic started by: mattkhan on October 13, 2017, 01:39:50 pm

Title: No audio from camera input
Post by: mattkhan on October 13, 2017, 01:39:50 pm

I am trying a different capture card, it's one of these - http://www.magewell.com/usb-capture-hdmi-plus

It appears to jriver as a device under the "camera" type.

The problem is I get no audio. The filter graph shows it is connected to the onboard audio while the magewell utility shows there is audio in the stream (see pic).

Any idea what I need to configure to tell jriver to pick up the device audio instead?

Code: [Select]

Filter Graph Info (TV graph):

    Filter 'JRiver Audio Renderer'
        CLSID: {A4002F8E-510F-442C-8AD3-F9C7B23FB394}
        Host:
        Input Pin 'In'
            Connected to pin 'Capture' of filter 'FrontMic (Realtek High Definition Audio)'
            Major type MEDIATYPE_Audio  Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx

    Filter 'madVR'
        CLSID: {E1A8B82A-32CE-4B0D-BE0D-AA68C772E423}
        Host: C:\Users\Matt\AppData\Roaming\J River\Media Center 23\Plugins\madvr\madVR64.ax
        Input Pin 'Input'
            Connected to pin 'Capture' of filter 'USB Capture HDMI+ EFF6BDC115E81E0C'
            Major type MEDIATYPE_Video  Sub type MEDIASUBTYPE_YUY2, Format type FORMAT_VideoInfo

    Filter 'FrontMic (Realtek High Definition Audio)'
        CLSID: {E30629D2-27E5-11CE-875D-00608CB78066}
        Host: c:\windows\system32\qcap.dll
        Output Pin 'Capture'
            Connected to pin 'In' of filter 'JRiver Audio Renderer'
            Major type MEDIATYPE_Audio  Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx
        Input Pin 'Master Volume'

    Filter 'USB Capture HDMI+ EFF6BDC115E81E0C'
        CLSID: {17CCA71B-ECD7-11D0-B908-00A0C9223196}
        Host: c:\windows\system32\ksproxy.ax
        Output Pin 'Capture'
            Connected to pin 'Input' of filter 'madVR'
            Major type MEDIATYPE_Video  Sub type MEDIASUBTYPE_YUY2, Format type FORMAT_VideoInfo
        Input Pin 'Video Camera Terminal'


Title: Re: No audio from camera input
Post by: mattkhan on October 13, 2017, 02:06:22 pm

I realised the capture card appears as a windows audio device so setting that as the default audio device means the audio is now played back by jriver

Is it possible for configure jriver to pick the audio device so I don't have to set it as the default recording device? or could the configuration screen be enhanced to expose this?

Title: Re: No audio from camera input
Post by: Yaobing on October 13, 2017, 08:41:10 pm

The device is treated as a "Camera" device because it does not provide an interface for us to select an input (audio or video). 

Title: Re: No audio from camera input
Post by: mattkhan on October 14, 2017, 02:40:09 am

Most other video players let you choose which audio device to use along with the video device rather than just picking the default device. This would be a sensible enhancement imv.