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<audio in Device> option required for capture cards

Posted: 15 Jan 2018 11:50
by CH7
Hi. I am running the latest VLC 2.2.8 for windows. I am trying to use it with a budget PCI HDMI capture card. https://www.ebay.com/itm/Pcie-HDMI-720p ... 2614723640

The VLC decodes the video ok but there are no audio options. The audio is encoded WITH the video capture. Programs like Honestech HD DVR 2.5 has a <audio in Device> option to get around this, whilst the Stereoscopic Player seem to expect audio on live capture devices.

I have checked Device Manager and the Timeleak is only referred to as a capture device, eg, it has no dedicated audio device.

Could a <audio in Device> option be added as an audio source for the next release of VLC? Failing that, could the same capture device be listed again in the list of audio sources? VLC needs to search that capture device to find the encoded audio.

[Also the default video playback is still 4:3 ??? this has to be set manually in 'Advanced Options' to the more common aspect ratio 16:9. Could VLC not remember the last entry?]

Can this be done?

Re: <audio in Device> option required for capture cards

Posted: 16 Jan 2018 20:50
by RĂ©mi Denis-Courmont
Patch welcome.

Re: <audio in Device> option required for capture cards

Posted: 21 Jan 2018 00:06
by CH7
I look forward to seeing this implemented. ;)

Re: <audio in Device> option required for capture cards

Posted: 22 Jan 2018 02:42
by CH7
Ok! I now have VLC 3.0 rc6

The option to set the capture device as the audio source is now available and works.
However there seems to be some 'buffering' issues. The audio plays for a second or two and the it drops briefly before it starts again.

Could it be that the audio isn't being treated as channels taken from of the same source?
Eg if "Video source" == "Audio source" then treat as separate channels of the 'same source' and synchronise.

If they are not seen as the same source, then they are treated as separate, which (because they are actually the same) might means closing one source to reopen the same resource.

I hope you can fix this. Btw should I try VLC 4.0 or the nightly builds? Win 7 x64 8 core.

Re: <audio in Device> option required for capture cards

Posted: 22 Jan 2018 11:13
by Jean-Baptiste Kempf