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The audio occasionally cuts out with 2.0.4 on my MBP 2011 + Cinema Display with audio set to either DisplayPort, USB or built-in output. This did not happen with 2.0.3. This also happens in a new user account (with clean VLC pref). Any help would be greatly appreciated. For the time being, I have downgraded back to 2.0.3.

When the audio cuts out, this is printed in the "Messages" log, even though no audio configuration was changed:

auhal warning: audio device configuration changed, resetting cache
auhal debug: Set Device: 0x4b
main debug: removing module "scaletempo"
main debug: removing module "ugly_resampler"
main debug: removing module "float32_mixer"
main debug: removing module "auhal"
main debug: looking for audio output module: 1 candidate
main debug: VLC is looking for: 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
auhal debug: found 6 audio device(s)
auhal debug: DevID: 33 DevName: AirPlay
auhal debug: found 1 stream formats
auhal debug: supported format: [44100.000000][mcpl][12][4][1][4][2][16]
auhal debug: DevID: 65 DevName: Built-in Microph
auhal debug: this device is INPUT only. skipping...
auhal debug: DevID: 55 DevName: Built-in Input
auhal debug: this device is INPUT only. skipping...
auhal debug: DevID: 40 DevName: Built-in Output
auhal debug: found 16 stream formats
auhal debug: supported format: [96000.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [88200.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [48000.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [44100.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [96000.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [88200.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [48000.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [44100.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [96000.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [88200.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [48000.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [44100.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [96000.000000][mcpl][9][8][1][8][2][32]
auhal debug: supported format: [88200.000000][mcpl][9][8][1][8][2][32]
auhal debug: supported format: [48000.000000][mcpl][9][8][1][8][2][32]
auhal debug: supported format: [44100.000000][mcpl][9][8][1][8][2][32]
auhal debug: DevID: 48 DevName: DisplayPort
auhal debug: found 9 stream formats
auhal debug: supported format: [48000.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [44100.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [32000.000000][mcpl][4][8][1][8][2][24]
auhal debug: supported format: [48000.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [44100.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [32000.000000][mcpl][4][8][1][8][2][20]
auhal debug: supported format: [48000.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [44100.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [32000.000000][mcpl][12][4][1][4][2][16]
auhal debug: DevID: 75 DevName: Display Audio
auhal debug: found 4 stream formats
auhal debug: supported format: [48000.000000][mcpl][12][6][1][6][2][24]
auhal debug: supported format: [44100.000000][mcpl][12][6][1][6][2][24]
auhal debug: supported format: [48000.000000][mcpl][12][4][1][4][2][16]
auhal debug: supported format: [44100.000000][mcpl][12][4][1][4][2][16]
auhal debug: using preselected output device 0x4b
auhal warning: failed to add listener for audio device configuration (1852797029)
auhal warning: audio device already in use
auhal warning: could not set alive check callback on device [0x4b]: epon
auhal debug: current format is: [44100.000000][mcpl][41][4][1][4][2][32]
auhal debug: layout of AUHAL has 2 channels
auhal debug: selected 2 physical channels for device output
auhal debug: VLC will output: Stereo
auhal debug: we set the AU format: [48000.000000][mcpl][9][8][1][8][2][32]
auhal debug: the actual set AU format is [48000.000000][mcpl][9][8][1][8][2][32]
auhal debug: analog output successfully opened
main debug: using audio output module "auhal"
main debug: TIMER module_need() : 6.133 ms - Total 6.133 ms / 1 intvls (Avg 6.133 ms)
main debug: output 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
main debug: mixer 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
main debug: filter(s) 'f32l'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
main debug: conversion pipeline completed
main debug: looking for audio mixer module: 2 candidates
main debug: using audio mixer module "float32_mixer"
main debug: TIMER module_need() : 0.087 ms - Total 0.087 ms / 1 intvls (Avg 0.087 ms)
main debug: input 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
main debug: looking for audio filter module: 1 candidate
scaletempo debug: format: 48000 rate, 2 nch, 4 bps, fl32
scaletempo debug: params: 30 stride, 0.200 overlap, 14 search
scaletempo debug: 1.000 scale, 1440.000 stride_in, 1440 stride_out, 1152 standing, 288 overlap, 672 search, 2400 queue, fl32 mode
main debug: using audio filter module "scaletempo"
main debug: TIMER module_need() : 0.118 ms - Total 0.118 ms / 1 intvls (Avg 0.118 ms)
main debug: filter(s) 'f32l'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
main debug: conversion pipeline completed
main debug: filter(s) 'f32l'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
main debug: conversion pipeline completed
main debug: filter(s) 'f32l'->'f32l' 52800 Hz->48000 Hz Stereo->Stereo
main debug: looking for audio filter module: 12 candidates
main debug: using audio filter module "ugly_resampler"
main debug: TIMER module_need() : 0.060 ms - Total 0.060 ms / 1 intvls (Avg 0.060 ms)
main debug: conversion pipeline completed

I should note that this happens every few minutes. It doesn't happen on my Mac Pro 2008 with optical out (where both 2.0.3 and 2.0.4 work perferctly).

Hi - just curious, I'm having the same problem since the upgrade to 2.0.4, but I think I may have narrowed it down.

In /Applications/Utilities/Audio MIDI Setup.app , what sample rate + bit depth is your sound card set to? I normally leave all mine at max (on a mid-2012 unibody Macbook Pro), i.e. 96KHz, 32-bit float, and I noticed this problem today. However, I tried dropping down to 96KHz, 24-bit integer (i.e. barely any worse), and so far haven't had the issue recur.

I don't think the optical outs support floating point audio, so this would make sense to me if your MBP is currently set up for that. I'm not a dev, but if you can confirm that too I think it'd help them fix it.

Edit: Of course, now I've switched back to 32-bit float to try and test my theory, and can't reproduce this again. Hmmmm.

All of my inputs/outputs are set to 48kHz/24bit Integer. I have already tried 44kHz and 96kHz but the problem still occurs. I'll try playing with the bit-depth next. I'm not using optical out. The MBP audio out is set to my Cinema Display (over USB, but the problem happens over DisplayPort, too).

I'm having the same problem on a 2012 macbook air 11", all internal audio. I do have Boom installed, but it's disabled.

A quick temporary solution is to revert back to 2.0.3: http://download.videolan.org/pub/videol ... .3/macosx/

Changing the audio bit-depth to 16bit in Audio MIDI Setup didn't help. I've also tried running VLC in 32bit mode (x86) with no improvement.

I finally solved this problem. There appears to be an incompatibility between VLC 2.0.4 and AirServer. As long as AirServer is off (by disabling auto-launch on boot and restarting; quiting after start-up doesn't work), VLC 2.0.4 works perfectly. Something must have changed between VLC 2.0.3 and 2.0.4 to cause this. For now, I'll leave AirServer disabled.

What I have observed: VLC garbling playback of ALAC files (haven't tried any AAC files.). Different rippers same result. Other players play the same files no prob. Just for giggles, I converted the ALAC file that I first observed the problem with to FLAC and the FLAC played perfectly.

This ALAC issue will be fixed soon.