[vlc-devel] Re: VLC and multichannel Audio Devices
ja at sente.ch
Thu Dec 8 12:00:10 CET 2005
I'm often rebuild vlc with the last track version and will be able to
test this week-end on a Motu 828 mkII.
What I did remark on previous versions is that when outputing certain
stereo files, VLC would still select the multi channel output and do
the upmixing. To overcome this, I've created a aggregate device with
just my motu, an alternate stereo config (to select the right output
pair, wich also fix the quicktime bug regarding channels, cool! :))
and not multi-channel output. It worked until recently but it with
the build 2 days ago. I'll try with the new one.
One suggestion for VLC is to display something what kind of output it
is generating: like an indicator for the source format (AC3 multi,
AC3 stereo, DTS, PCM....) and one for the output (digital, stereo,
Thanks for the nice work!
Le 7 déc. 05 à 20:21, Derk-Jan Hartman a écrit :
> Hello everyone,
> I have recently merged my AUHAL work and CoreAudio SPDIF work into
> one single VLC plugin.
> It works with my PowerMac G5 SPDIF port and with my Sonica Theater
> (driver version 1.6) SPDIF and multichannel analog output.
> However there are of course tons of other devices which I do not
> own or do not have access to. For this I need your help. If you
> have a USB, firewire of PCI audio device, please try the VLC
> nightly build below:
> The build:
> To be tested:
> - normal stereo out
> - 5.1 analog out
> - 5.1 encoded out
> - Mac OS X 10.4
> - The latest drivers for your device installed (please check this,
> a lot changed over the past two years in audio device management)
> - speakers configured in Audio Midi Setup Utility (For multichannel
> analog output)
> - When testing encoded output, you need to select the "name
> (Encoded Output)" variant of your device in VLCs Audio Device Menu
> - PnP of devices during playback is not supported atm.
> It's best to launch VLC from the Terminal with /Applications/
> VLC.app/Contents/MacOS/VLC -vvv
> In this mode VLC will provide detailed debug information which in
> case of an issue I can use to fix this. Please mail me this
> information in case you report back, as well as your Audio device
> type and your audio device driver version. Also please try to
> describe what you did in order to trigger the issue (the file type
> you played, what you selected etc etc).
> I think that with this module I can finally claim analog
> multichannel output AND encoded digital output in VLC.
> I also think that in the basis this is how such a thing needs to be
> implemented. However there can be a few corner stone cases for
> devices which are not currently handled just yet.
> I would like to thank M-Audio for the Sonica Theater and the VLC
> users who donated money for the Powermac G5, without which I could
> have never fixed this.
> And all the Coreaudio-api list people, esp Jeff Moore and Doug
> Wyatt, for their assistance and knowledge on AUHAL and CoreAudio.
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