The VideoLAN Forums

Hi everybody,

I found a strange thing with VLC that took me some time on a gig with lots of stress. I'm using VLC for the playback of 5.1 surround audio files for supporting my band when playing live. I'm using 5.1 because I need more than just 2 channels playing simultaneously. When creating these files in Cubase there is a fixed assignment of the channels:

* Stereo Playbacks go to Surround L/R
* Metronome 1 to Center
* Metronome 2 to Subwoofer
* L/R ("normal") channels are not used (=empty)

On Mac OS's Audio/MIDI configuration I'm routing surround L/R to output channels 3/4 of my audio device and the metronomes to outputs 5 and 6. Everything worked fine until I updated to 10.9 Mavericks and VLC 2.1.x. I did these updates unfortunately on the same day so I can't tell if it's a Mac OS or a VLC issue or a combination. See below why I believe it's a VLC thing.

I found out that the routing of surround and center/subwoofer have been inverted. I hear the surround channels on outputs 5/6 and not on 3/4 any more. Center/woofer is on 3/4 instead and not on 5/6 any more. I checked my setup a couple of times, updated everything to the latest versions (Mac OS, the control panel of my audio device, VLC) and re-checked again.

I'm now using VLC 2.0.7 and VLC 2.1.2 in parallel, and finally I can say: Audio file played in VLC 2.0.7, works like it should. Same file played in VLC 2.1.2 (and 2.1.1 as well), channels are inverted. While changing VLC versions I don't change any settings on my audio device or on Mac OS, of course.

My setup is:
* MacBook 13,3", Mid 2013
* MacOS 10.9.1 (latest version, but the problem also occurred on 10.9.0)
* Focusrite Saffire Pro24 6-channel output audio interface (Firewire)
* latest Focusrite MixControl Software (3.3)
* VLC 2.0.7 and 2.1.2

Anyone else who can confirm this?

Thanks a lot in advance!
Daniel

There is already a bugreport on this.

Thanks Jean-Baptiste,

I looked through the open VLC tickets now and found the bug has already been reported.
If anyone needs further input or investigation on this, please let me know.

Daniel

Add logs to the ticket, pelase.

Hi,

I might have found the issue for your problem, but as I do not have a proper testing device, I want to ask if you could test this build: https://www.dropbox.com/s/otemq85otkt88 ... g-test.zip

I would be glad if you can report back if its working with this build. If not, a new log would be helpful.

Thanks.

Hi danji, are you still using this set up? I'm trying to do the same thing... Play video with 6 polywav ... Any suggetion? Thanks