VLC does not resample correctly with JACK
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
VLC media player |
Fix Released
|
Undecided
|
Rémi Denis-Courmont | ||
vlc (Debian) |
Fix Released
|
Unknown
|
|||
vlc (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
When using the Jack output module audio gets distorted or does not play at all when playing a track with a samplerate other than the one specified in jack.
the (i hope) relevant part of VLC debug messages when starting playback is:
jack debug: JACK audio output initialized (6 channels, rate=48000)
main debug: using audio output module "jack"
main debug: TIMER module_need() : 207.535 ms - Total 207.535 ms / 1 intvls (Avg 207.535 ms)
main debug: output 'f32l' 48000 Hz 3F2R/LFE frame=1 samples/24 bytes
main debug: mixer 'f32l' 48000 Hz 3F2R/LFE frame=1 samples/24 bytes
main debug: filter(s) 'f32l'->'f32l' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
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() : 0.170 ms - Total 0.170 ms / 1 intvls (Avg 0.170 ms)
main debug: input 's24l' 96000 Hz 3F2R/LFE frame=1 samples/18 bytes
main debug: looking for audio filter module: 1 candidate
scaletempo debug: format: 96000 rate, 6 nch, 4 bps, fl32
scaletempo debug: params: 30 stride, 0.200 overlap, 14 search
scaletempo debug: 1.000 scale, 2880.000 stride_in, 2880 stride_out, 2304 standing, 576 overlap, 1344 search, 4800 queue, fl32 mode
main debug: using audio filter module "scaletempo"
main debug: TIMER module_need() : 0.208 ms - Total 0.208 ms / 1 intvls (Avg 0.208 ms)
main debug: filter(s) 's24l'->'f32l' 96000 Hz->96000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio filter module: 14 candidates
jack debug: JACK graph reordered. Our maximum latency=0.
audio_format debug: s24l->f32l, bits per sample: 24->32
main debug: using audio filter module "audio_format"
main debug: TIMER module_need() : 5.259 ms - Total 5.259 ms / 1 intvls (Avg 5.259 ms)
main debug: conversion pipeline completed
main debug: filter(s) 'f32l'->'f32l' 96000 Hz->96000 Hz 3F2R/LFE->3F2R/LFE
main debug: conversion pipeline completed
main debug: filter(s) 'f32l'->'f32l' 105600 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio filter module: 14 candidates
main debug: using audio filter module "samplerate"
main debug: TIMER module_need() : 0.567 ms - Total 0.567 ms / 1 intvls (Avg 0.567 ms)
main debug: conversion pipeline completed
main debug: End of audio preroll
main debug: Decoder buffering done in 214 ms
main warning: PTS is out of range (-7893), dropping buffer
main warning: audio output out of sync, adjusting dates (73547 us)
main warning: not synchronized (73548 us), resampling
main warning: buffer too late (73130), up-sampling
main warning: audio output out of sync, adjusting dates (64012 us)
main warning: not synchronized (64014 us), resampling
main warning: timing screwed, stopping resampling
main warning: buffer too late (137124), up-sampling
main warning: audio output out of sync, adjusting dates (63978 us)
main warning: not synchronized (63980 us), resampling
main warning: buffer way too late (201083), dropping buffer
main warning: audio output out of sync, adjusting dates (64026 us)
main warning: not synchronized (64028 us), resampling
main warning: buffer way too late (222444), dropping buffer
main warning: audio output out of sync, adjusting dates (64113 us)
main warning: not synchronized (64115 us), resampling
main warning: buffer way too late (243892), dropping buffer
main warning: buffer way too late (201226), dropping buffer
main warning: audio output out of sync, adjusting dates (63992 us)
main warning: not synchronized (63994 us), resampling
main warning: buffer way too late (222532), dropping buffer
main warning: audio output out of sync, adjusting dates (63984 us)
main warning: not synchronized (63986 us), resampling
main warning: buffer way too late (243851), dropping buffer
main warning: buffer way too late (201185), dropping buffer
main warning: audio output out of sync, adjusting dates (64004 us)
main warning: not synchronized (64005 us), resampling
main warning: buffer way too late (222502), dropping buffer
main warning: audio output out of sync, adjusting dates (63904 us)
main warning: not synchronized (63905 us), resampling
main warning: buffer way too late (243720), dropping buffer
main warning: buffer way too late (201054), dropping buffer
main warning: audio output out of sync, adjusting dates (106827 us)
main warning: not synchronized (106829 us), resampling
main warning: buffer way too late (265195), dropping buffer
main warning: buffer way too late (222528), dropping buffer
main warning: audio output out of sync, adjusting dates (127947 us)
main warning: not synchronized (127949 us), resampling
main warning: buffer way too late (307790), dropping buffer
main warning: buffer way too late (265123), dropping buffer
main warning: buffer way too late (222457), dropping buffer
main debug: audio output is too slow (21186 us): trashing 10667 us
main debug: audio output is too slow (10519 us): trashing 10666 us
....
When playing a track with higher samplerate the VLC output is flooded with:
main debug: audio output is too slow (1824148 us): trashing 10667 us
main debug: audio output is too slow (1856244 us): trashing 10666 us
main debug: audio output is too slow (1845578 us): trashing 10667 us
...
when playing a track with lower samplerate:
main debug: audio output is starving (-24525), playing silence
main debug: audio output is starving (-24066), playing silence
main debug: audio output is starving (-23354), playing silence
...
I made tests with different settings of samplerate and periode for jack but the result is always the same.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: vlc-plugin-jack 2.0.1-4
ProcVersionSign
Uname: Linux 3.2.0-23-lowlatency i686
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
Date: Mon Apr 23 12:44:29 2012
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110426.1)
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: vlc
UpgradeStatus: Upgraded to precise on 2012-04-10 (13 days ago)
summary: |
- does not resample to samplerate defined in jack + VLC does not resample to samplerate defined in jack |
Changed in vlc (Debian): | |
status: | Unknown → New |
Changed in vlc: | |
assignee: | nobody → Rémi Denis-Courmont (rdenis) |
milestone: | none → 2.0.2 |
Changed in vlc: | |
status: | New → Fix Released |
Changed in vlc (Debian): | |
status: | New → Confirmed |
Changed in vlc (Ubuntu): | |
status: | Confirmed → Triaged |
Changed in vlc (Debian): | |
status: | Confirmed → Fix Released |
Can you please retry with audio time stretching disabled in the preferences?