Bug 41465 - audio video out of sync when equalizer-sink used
Summary: audio video out of sync when equalizer-sink used
Alias: None
Product: PulseAudio
Classification: Unclassified
Component: modules (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: medium normal
Assignee: pulseaudio-bugs
QA Contact: pulseaudio-bugs
Depends on:
Reported: 2011-10-04 14:50 UTC by Carl Michal
Modified: 2018-07-30 10:24 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Description Carl Michal 2011-10-04 14:50:29 UTC
When the equalizer sink is used (which works quite nicely by the way!)
video players seem to be unable to synchronize audio and video properly.

I've tried totem, vlc, and mplayer and in each case the audio lags noticeably (~100 ms).  I have the equalizer-sink set as the default sink:
ie default.pa has:
load-module module-equalizer-sink sink_name=equalized
set-default-sink equalized

For each of those players, if the sink is set to the hardware, bypassing the equalizer, then the a-v sync seems perfect.
I can understand why the audio latency would be greater with the equalizer module, but it seems that the movie players aren't getting the message for the default sink?

It's easy enough to manually set an audio delay in mplayer, but with flash content this seems like a bit more of a problem.

I'm using pulseaudio-1.0-r1 on gentoo.
Comment 1 GitLab Migration User 2018-07-30 10:24:46 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/400.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.