Public bug reported:
On many videos, vlc stops playing audio or plays stuttering audio after
seeking. This is a regression from 13.10. With --verbose=2, I see
messages like:
$ vlc --verbose=2 test.wmv 2>&1 | grep audio
[0x1a91048] main playlist debug: creating audio output
[0x195d948] main audio output debug: looking for audio output module matching
"any": 6 candidates
[0x195d948] pulse audio output debug: using library version 4.0.0
[0x195d948] pulse audio output debug: (compiled with version 4.0.0, protocol
28)
[0x195d948] pulse audio output debug: connected locally to
unix:/run/user/1000/pulse/native as client #257
[0x195d948] pulse audio output debug: using protocol 28, server protocol 28
[0x195d948] main audio output debug: using audio output module "pulse"
[0x1a91048] main playlist debug: keeping audio output
[0x195d948] pulse audio output debug: adding sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x7f72a0c01768] asf demux debug: added new audio stream(codec:0x161,ID:2)
[0x1a91048] main playlist debug: reusing audio output
[0x195d948] pulse audio output debug: using stereo channel map
[0x195d948] pulse audio output debug: changing sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x195d948] pulse audio output debug: changed buffer metrics:
maxlength=4194304, tlength=42336, prebuf=0, minreq=14112
[0x195d948] pulse audio output debug: connected to sink
alsa_output.pci-0000_00_1b.0.analog-stereo
[0x195d948] pulse audio output debug: base volume: 65536
[0x195d948] main audio output debug: output 'f32l' 48000 Hz Stereo frame=1
samples/8 bytes
[0x7f7294030a18] main volume debug: looking for audio volume module matching
"any": 2 candidates
[0x7f7294030a18] main volume debug: using audio volume module "float_mixer"
[0x195d948] main audio output debug: input 'f32l' 44100 Hz Stereo frame=1
samples/8 bytes
[0x7f7294032b78] main audio filter debug: looking for audio filter module
matching "scaletempo": 14 candidates
[0x7f7294032b78] scaletempo audio filter debug: format: 44100 rate, 2 nch, 4
bps, fl32
[0x7f7294032b78] scaletempo audio filter debug: params: 30 stride, 0.200
overlap, 14 search
[0x7f7294032b78] scaletempo audio filter debug: 1.000 scale, 1323.000
stride_in, 1323 stride_out, 1059 standing, 264 overlap, 617 search, 2204 queue,
fl32 mode
[0x7f7294032b78] main audio filter debug: using audio filter module "scaletempo"
[0x195d948] main audio output debug: conversion: 'f32l'->'f32l' 44100 Hz->44100
Hz Stereo->Stereo
[0x195d948] main audio output debug: conversion pipeline complete
[0x195d948] main audio output debug: conversion: 'f32l'->'f32l' 44100 Hz->44100
Hz Stereo->Stereo
[0x195d948] main audio output debug: conversion pipeline complete
[0x7f7294039d48] main audio resampler debug: looking for audio resampler module
matching "any": 3 candidates
[0x7f7294039d48] main audio resampler debug: using audio resampler module
"samplerate"
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: cannot synchronize start
[0x195d948] pulse audio output debug: deferring start (412345 us)
[0x195d948] pulse audio output warning: starting late (-17127 us)
[0x195d948] pulse audio output debug: started
[0x195d948] pulse audio output debug: changing sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x195d948] main audio output warning: playback way too early (-398592):
playing silence
[0x195d948] main audio output debug: inserting 19132 zeroes
[0x195d948] pulse audio output debug: underflow
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x7f7294039d48] main audio resampler debug: removing module "samplerate"
[0x7f7294032b78] main audio filter debug: removing module "scaletempo"
[0x1a91048] main playlist debug: keeping audio output
[0x195d948] main audio output debug: removing module "pulse"
Other video players, like totem, have no problem playing this file. Nor
did vlc on Ubuntu 13.10.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: vlc 2.1.2-2build2
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Tue May 13 23:27:01 2014
InstallationDate: Installed on 2013-01-12 (486 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: vlc
UpgradeStatus: Upgraded to trusty on 2014-05-08 (5 days ago)
** Affects: vlc (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug regression-release third-party-packages trusty
** Tags added: regression-release
** Description changed:
On many videos, vlc stops playing audio or plays stuttering audio after
seeking. This is a regression from 13.10. With --verbose=2, I see
messages like:
$ vlc --verbose=2 test.wmv 2>&1 | grep audio
[0x1a91048] main playlist debug: creating audio output
[0x195d948] main audio output debug: looking for audio output module matching
"any": 6 candidates
[0x195d948] pulse audio output debug: using library version 4.0.0
[0x195d948] pulse audio output debug: (compiled with version 4.0.0, protocol
28)
[0x195d948] pulse audio output debug: connected locally to
unix:/run/user/1000/pulse/native as client #257
[0x195d948] pulse audio output debug: using protocol 28, server protocol 28
[0x195d948] main audio output debug: using audio output module "pulse"
[0x1a91048] main playlist debug: keeping audio output
[0x195d948] pulse audio output debug: adding sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x7f72a0c01768] asf demux debug: added new audio stream(codec:0x161,ID:2)
[0x1a91048] main playlist debug: reusing audio output
[0x195d948] pulse audio output debug: using stereo channel map
[0x195d948] pulse audio output debug: changing sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x195d948] pulse audio output debug: changed buffer metrics:
maxlength=4194304, tlength=42336, prebuf=0, minreq=14112
[0x195d948] pulse audio output debug: connected to sink
alsa_output.pci-0000_00_1b.0.analog-stereo
[0x195d948] pulse audio output debug: base volume: 65536
[0x195d948] main audio output debug: output 'f32l' 48000 Hz Stereo frame=1
samples/8 bytes
[0x7f7294030a18] main volume debug: looking for audio volume module matching
"any": 2 candidates
[0x7f7294030a18] main volume debug: using audio volume module "float_mixer"
[0x195d948] main audio output debug: input 'f32l' 44100 Hz Stereo frame=1
samples/8 bytes
[0x7f7294032b78] main audio filter debug: looking for audio filter module
matching "scaletempo": 14 candidates
[0x7f7294032b78] scaletempo audio filter debug: format: 44100 rate, 2 nch, 4
bps, fl32
[0x7f7294032b78] scaletempo audio filter debug: params: 30 stride, 0.200
overlap, 14 search
[0x7f7294032b78] scaletempo audio filter debug: 1.000 scale, 1323.000
stride_in, 1323 stride_out, 1059 standing, 264 overlap, 617 search, 2204 queue,
fl32 mode
[0x7f7294032b78] main audio filter debug: using audio filter module
"scaletempo"
[0x195d948] main audio output debug: conversion: 'f32l'->'f32l' 44100
Hz->44100 Hz Stereo->Stereo
[0x195d948] main audio output debug: conversion pipeline complete
[0x195d948] main audio output debug: conversion: 'f32l'->'f32l' 44100
Hz->44100 Hz Stereo->Stereo
[0x195d948] main audio output debug: conversion pipeline complete
[0x7f7294039d48] main audio resampler debug: looking for audio resampler
module matching "any": 3 candidates
[0x7f7294039d48] main audio resampler debug: using audio resampler module
"samplerate"
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: cannot synchronize start
[0x195d948] pulse audio output debug: deferring start (412345 us)
[0x195d948] pulse audio output warning: starting late (-17127 us)
[0x195d948] pulse audio output debug: started
[0x195d948] pulse audio output debug: changing sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog Stereo)
[0x195d948] main audio output warning: playback way too early (-398592):
playing silence
[0x195d948] main audio output debug: inserting 19132 zeroes
[0x195d948] pulse audio output debug: underflow
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x7f72a0c1cfe8] main decoder debug: End of audio preroll
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x195d948] pulse audio output debug: underflow
[0x7f7294039d48] main audio resampler debug: removing module "samplerate"
[0x7f7294032b78] main audio filter debug: removing module "scaletempo"
[0x1a91048] main playlist debug: keeping audio output
[0x195d948] main audio output debug: removing module "pulse"
- Other video players, like mplayer, have no problem playing this file.
- Nor did vlc on Ubuntu 13.10.
+ Other video players, like totem, have no problem playing this file. Nor
+ did vlc on Ubuntu 13.10.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: vlc 2.1.2-2build2
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Tue May 13 23:27:01 2014
InstallationDate: Installed on 2013-01-12 (486 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: vlc
UpgradeStatus: Upgraded to trusty on 2014-05-08 (5 days ago)
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https://bugs.launchpad.net/bugs/1319233
Title:
audio stutters or stops playing after seeking
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