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FS#29906 - [libpulse] 2.0-1 delays VLC audio track

Attached to Project: Arch Linux
Opened by Mort Yao (soimort) - Wednesday, 16 May 2012, 02:58 GMT
Last edited by Giovanni Scafora (giovanni) - Monday, 27 May 2013, 19:56 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Jan Alexander Steffens (heftig)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 3
Private No



After upgraded libpulse/pulseaudio from 1.1-4 to 2.0-1, there is a audio/video synchronization problem when playing any video in VLC.
The audio track always comes with a few seconds of delaying after the video plays, but once dragged the video scroll bar, the audio went synchronized with the video again.
Downgrade libpulse/pulseaudio to 1.1-4 and restart will get rid of this problem.

Additional info:
* libpulse 2.0-1
* pulseaudio 2.0-1
* vlc 2.0.1-1

Steps to reproduce:
1. upgrade libpulse/pulseaudio to 2.0-1
2. restart the system
This task depends upon

Closed by  Giovanni Scafora (giovanni)
Monday, 27 May 2013, 19:56 GMT
Reason for closing:  Upstream
Comment by Jan Alexander Steffens (heftig) - Wednesday, 16 May 2012, 09:08 GMT
Please try to bisect the git history between v1.0 and v2.0 to the specific commit that introduces this regression, if you can.
Comment by Mort Yao (soimort) - Wednesday, 16 May 2012, 19:52 GMT
The commit (sink,source: Update sample rate if possible on stream uncork) introduces the regression.
I've reported this issue
Comment by David Runge (dvzrv) - Sunday, 20 May 2012, 22:55 GMT
Does it also come with distorted audio, each time the harddisk has to spin up?
Every single file I play starts with distorted/crackling audio, desync, then syncs and plays fine, until the file buffer needs to be filled again.