[pulseaudio-discuss] VLC + pulseaudio issues

Drew drew.hope+pulseaudio at gmail.com
Thu May 24 11:08:12 PDT 2012


I've been trying to figure out a problem I'm having with continuous
dopplering of VLC when using pulseaudio for sound.  There is no
dopplering with use of pure ALSA output.  I'd greatly appreciate any
assistance as I've been unable to resolve this on my own after
extensive google digging.

Here's the behavior (from vlc -vvv):

[0xb3f59e98] pulse audio output warning: too late by 87060 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48092 Hz
[0xb4d1f458] main decoder debug: removing module "subsdec"
[0xb4d1f458] main decoder debug: killing decoder fourcc `subt', 0 PES in FIFO
[0xb3f59e98] pulse audio output warning: too late by 99491 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48138 Hz
[0xb3f59e98] pulse audio output warning: too late by 113518 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48184 Hz
[0xb3f59e98] pulse audio output warning: too late by 116756 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48230 Hz
[0xb3f59e98] pulse audio output warning: too late by 127217 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48276 Hz
[0xb3f59e98] pulse audio output warning: too late by 134908 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48322 Hz
[0xb3f59e98] pulse audio output warning: too late by 146724 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48368 Hz
[0xb3f59e98] pulse audio output warning: too late by 148023 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48414 Hz
[0xb3f59e98] pulse audio output warning: too late by 150270 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48460 Hz
[0xb3f59e98] pulse audio output warning: too late by 149440 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48506 Hz
[0xb3f59e98] pulse audio output warning: too late by 139743 us
[0xb3f59e98] pulse audio output debug: changed sample rate to 48495 Hz

This continues throughout the playback causing sound to 'warble' and
doppler up and down nearly continuously.

Any suggestions on ways to tweak/fix this issue?

Thanks,
Drew


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