VLC plays AC3 file

[dr.highman]

vlc 0.98a plays a stereo test.ac3 file not correctly on windows and linux FC-9 and Ubuntu, a little bit sound out, then stop with the bar going to end.

mplayer can do it correctly, which also use a52 and accelerated mode (no in vlc). ffplayer works fine as well.

vlc -vvv --codec ffmpeg test.ac3
segmentation fault occurs.

mplayer -afm ffmpeg test.ac3
works fine.

[Jean-Baptiste Kempf]

Can you share the file?

[dr.highman]

sure. But I do not know how to attach this file.

This ac3 file is made like this on FC-9:

ffmpeg -i /usr/share/sounds/login.wav test.ac3

login.wav is 44.1KHz, 2-channels, 16 bit. Or you can get it by
locate login.wav


Then
vlc test.ac3
//sth wrong in sound, on windows, same thing

vlc --codec ffmpeg test.ac3
// [00000452] a52 packetizer: A/52 channels:2 samplerate:44100 bitrate:64000
Segmentation fault

mplayer test.ac3 //works fine
ffplay test.ac3 //works fine
----------------------------------------------------------------------------------------------------------------------
This is output from vlc -vvv test.ac3

VLC media player 0.9.8a Grishenko
[00000001] main libvlc debug: VLC media player - version 0.9.8a Grishenko - (c) 1996-2008 the VideoLAN team
[00000001] main libvlc debug: libvlc was configured with ./configure '--build=i686-pc-linux-gnu' '--host=i686-pc-linux-gnu' '--target=i386-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/usr/com' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--disable-dependency-tracking' '--disable-rpath' '--enable-release' '--with-tuning=no' '--enable-switcher' '--enable-shout' '--enable-live555' '--enable-opencv' '--enable-v4l' '--enable-pvr' '--enable-gnomevfs' '--enable-cddax' '--enable-faad' '--enable-twolame' '--enable-real' '--enable-realrtsp' '--enable-flac' '--enable-tremor' '--enable-speex' '--enable-tarkin' '--enable-theora' '--enable-svg' '--enable-snapshot' '--enable-svgalib' '--enable-xvmc' '--enable-directfb' '--enable-aa' '--enable-caca' '--enable-jack' '--enable-portaudio' '--enable-pulse' '--enable-ncurses' '--enable-xosd' '--enable-fbosd' '--enable-galaktos' '--enable-lirc' '--enable-loader' '--enable-mozilla' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'target_alias=i386-redhat-linux-gnu' 'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables' 'CXXFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables' 'PKG_CONFIG_PATH=/usr/lib/pkgconfig:/usr/share/pkgconfig'
[00000001] main libvlc debug: translation test: code is "C"
[00000001] main libvlc debug: checking builtin modules
[00000001] main libvlc debug: checking plugin modules
[00000001] main libvlc debug: loading plugins cache file /home/highman/.cache/vlc/plugins-04041e.dat
[00000001] main libvlc debug: recursively browsing `/usr/lib/vlc'
[00000001] main libvlc debug: module bank initialized, found 295 modules
[00000001] main libvlc debug: opening config file (/home/highman/.config/vlc/vlcrc)
[00000001] main libvlc debug: CPU has capabilities 486 586 MMX MMXEXT SSE SSE2 FPU
[00000001] main libvlc debug: looking for memcpy module: 3 candidates
[00000001] main libvlc debug: using memcpy module "memcpymmxext"
[00000393] main interaction debug: thread 3084397456 (Interaction control) created at priority 0 (interface/interaction.c:382)
[00000393] main interaction debug: thread started
[00000395] main input debug: Creating an input for 'Media Library'
[00000395] main input debug: Input is a meta file: disabling unneeded options
[00000395] main input debug: `file/xspf-open:///home/highman/.local/share/vlc/ml.xspf' gives access `file' demux `xspf-open' path `/home/highman/.local/share/vlc/ml.xspf'
[00000395] main input debug: creating access 'file' path='/home/highman/.local/share/vlc/ml.xspf'
[00000396] main access debug: looking for access module: 3 candidates
[00000396] access_file access debug: opening file `/home/highman/.local/share/vlc/ml.xspf'
[00000396] main access debug: using access module "access_file"
[00000396] main access debug: TIMER module_Need() : 1.467 ms - Total 1.467 ms / 1 intvls (Avg 1.467 ms)
[00000401] main stream debug: Using AStream*Stream
[00000401] main stream debug: pre-buffering...
[00000401] main stream debug: received first data for our buffer
[00000395] main input debug: creating demux: access='file' demux='xspf-open' path='/home/highman/.local/share/vlc/ml.xspf'
[00000402] main demux debug: looking for demux module: 1 candidate
[00000402] playlist demux debug: using XSPF playlist reader
[00000402] main demux debug: using demux module "playlist"
[00000402] main demux debug: TIMER module_Need() : 0.338 ms - Total 0.338 ms / 1 intvls (Avg 0.338 ms)
[00000395] main input debug: `file/xspf-open:///home/highman/.local/share/vlc/ml.xspf' successfully opened
[00000417] main xml debug: looking for xml module: 2 candidates
[00000417] main xml debug: using xml module "xml"
[00000417] main xml debug: TIMER module_Need() : 0.617 ms - Total 0.617 ms / 1 intvls (Avg 0.617 ms)
[00000402] playlist demux debug: parsed 0 tracks successfully
[00000417] main xml debug: removing module "xml"
[00000395] main input debug: EOF reached
[00000395] main input debug: control type=1
[00000402] main demux debug: removing module "playlist"
[00000396] main access debug: removing module "access_file"
[00000395] main input debug: TIMER input launching for 'Media Library' : 4.447 ms - Total 4.447 ms / 1 intvls (Avg 4.447 ms)
[00000419] main preparser debug: waiting for thread initialization
[00000419] main preparser debug: thread started
[00000419] main preparser debug: thread 3072326544 (preparser) created at priority 0 (playlist/thread.c:79)
[00000420] main fetcher debug: waiting for thread initialization
[00000420] main fetcher debug: thread started
[00000420] main fetcher debug: thread 3061836688 (fetcher) created at priority 0 (playlist/thread.c:108)
[00000394] main playlist debug: waiting for thread initialization
[00000394] main playlist debug: thread started
[00000394] main playlist debug: rebuilding array of current - root Playlist
[00000394] main playlist debug: rebuild done - 0 items, index -1
[00000394] main playlist debug: thread 3051346832 (playlist) created at priority 0 (playlist/thread.c:117)
[00000421] main interface debug: looking for interface module: 1 candidate
[00000421] main interface debug: using interface module "hotkeys"
[00000421] main interface debug: TIMER module_Need() : 0.189 ms - Total 0.189 ms / 1 intvls (Avg 0.189 ms)
[00000421] main interface debug: thread 3040856976 (interface) created at priority 0 (interface/interface.c:168)
[00000421] main interface debug: thread started
[00000423] main interface debug: looking for interface module: 1 candidate
[00000423] main interface debug: using interface module "inhibit"
[00000423] main interface debug: TIMER module_Need() : 2.766 ms - Total 2.766 ms / 1 intvls (Avg 2.766 ms)
[00000423] main interface debug: thread started
[00000423] main interface debug: thread 3030367120 (interface) created at priority 0 (interface/interface.c:168)
[00000425] main interface debug: looking for interface module: 1 candidate
[00000425] main interface debug: using interface module "screensaver"
[00000425] main interface debug: TIMER module_Need() : 0.279 ms - Total 0.279 ms / 1 intvls (Avg 0.279 ms)
[00000425] main interface debug: thread started
[00000425] main interface debug: thread 3019877264 (interface) created at priority 0 (interface/interface.c:168)
[00000394] main playlist debug: adding item `test.ac3' ( test.ac3 )
[00000427] main interface debug: looking for interface module: 23 candidates
[00000427] main interface debug: using interface module "signals"
[00000427] main interface debug: TIMER module_Need() : 0.245 ms - Total 0.245 ms / 1 intvls (Avg 0.245 ms)
[00000427] main interface debug: thread started
[00000427] main interface debug: thread 2998897552 (interface) created at priority 0 (interface/interface.c:168)
[00000001] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[00000429] main interface debug: looking for interface module: 6 candidates
[00000429] main interface debug: using interface module "qt4"
[00000429] main interface debug: TIMER module_Need() : 10.618 ms - Total 10.618 ms / 1 intvls (Avg 10.618 ms)
[00000429] main interface debug: thread 2988407696 (interface) created at priority 0 (interface/interface.c:168)
[00000429] main interface debug: thread started
[00000394] main playlist debug: starting new item
[00000394] main playlist debug: processing request item null node Playlist skip 0
[00000394] main playlist debug: rebuilding array of current - root Playlist
[00000394] main playlist debug: rebuild done - 1 items, index -1
[00000394] main playlist debug: creating new input thread
[00000433] main input debug: Creating an input for 'test.ac3'
[00000433] main input debug: thread started
[00000433] main input debug: waiting for thread initialization
[00000433] main input debug: `test.ac3' gives access `' demux `' path `test.ac3'
[00000433] main input debug: thread 2977917840 (input) created at priority 10 (input/input.c:370)
[00000433] main input debug: creating demux: access='' demux='' path='test.ac3'
[00000434] main demux debug: looking for access_demux module: 3 candidates
[00000434] main demux debug: TIMER module_Need() : 1.103 ms - Total 1.103 ms / 1 intvls (Avg 1.103 ms)
[00000433] main input debug: creating access '' path='test.ac3'
[00000439] main access debug: looking for access module: 8 candidates
[00000439] vcd access debug: trying .cue file: test.cue
[00000439] vcd access debug: could not find .cue file
[00000439] access_file access debug: opening file `test.ac3'
[00000439] main access debug: using access module "access_file"
[00000439] main access debug: TIMER module_Need() : 0.457 ms - Total 0.457 ms / 1 intvls (Avg 0.457 ms)
[00000441] main stream debug: Using AStream*Stream
[00000441] main stream debug: pre-buffering...
[00000441] main stream debug: received first data for our buffer
[00000433] main input debug: creating demux: access='' demux='' path='test.ac3'
[00000442] main demux debug: looking for demux module: 51 candidates
[00000452] main packetizer debug: looking for packetizer module: 18 candidates
[00000452] main packetizer debug: using packetizer module "a52"
[00000452] main packetizer debug: TIMER module_Need() : 2.316 ms - Total 2.316 ms / 1 intvls (Avg 2.316 ms)
[00000433] main input debug: selecting program id=0
[00000442] main demux debug: using demux module "a52sys"
[00000442] main demux debug: TIMER module_Need() : 3.526 ms - Total 3.526 ms / 1 intvls (Avg 3.526 ms)
[00000433] main input debug: looking for a subtitle file in /home/highman/
[00000482] main decoder debug: looking for decoder module: 35 candidates
[00000482] main decoder debug: using decoder module "a52"
[00000482] main decoder debug: TIMER module_Need() : 2.136 ms - Total 2.136 ms / 1 intvls (Avg 2.136 ms)
[00000482] main decoder debug: thread 2952784784 (decoder) created at priority 5 (input/decoder.c:217)
[00000482] main decoder debug: thread started
[00000442] main demux debug: looking for meta reader module: 2 candidates
[00000442] id3tag demux debug: checking for ID3v1/2 and APEv1/2 tags
[00000442] main demux debug: TIMER module_Need() : 1.595 ms - Total 1.595 ms / 1 intvls (Avg 1.595 ms)
[00000433] main input debug: `test.ac3' successfully opened
[00000452] a52 packetizer: A/52 channels:2 samplerate:44100 bitrate:64000
[00000482] a52 decoder: A/52 channels:2 samplerate:44100 bitrate:64000
[00000482] main decoder debug: no aout present, spawning one
[00000494] main audio output debug: looking for audio output module: 6 candidates
[00000494] pulse audio output: No. of Audio Channels: 2
[00000494] pulse audio output debug: Pulse mainloop started
[00000433] main input debug: control type=1
[00000494] pulse audio output debug: Pulse stream connected
[00000494] pulse audio output debug: Pulse initialized successfully
[00000494] pulse audio output debug: Buffer metrics: maxlength=88200, tlength=79376, prebuf=39688, minreq=7936
[00000494] pulse audio output debug: Using sample spec 'float32le 2ch 44100Hz', channel map 'front-left,front-right'.
[00000494] pulse audio output debug: Connected to device alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0 (0, not suspended).
[00000494] main audio output debug: using audio output module "pulse"
[00000494] main audio output debug: TIMER module_Need() : 40.528 ms - Total 40.528 ms / 1 intvls (Avg 40.528 ms)
[00000494] main audio output debug: output 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: mixer 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: no need for any filter
[00000494] main audio output debug: looking for audio mixer module: 3 candidates
[00000494] main audio output debug: using audio mixer module "float32_mixer"
[00000494] main audio output debug: TIMER module_Need() : 0.319 ms - Total 0.319 ms / 1 intvls (Avg 0.319 ms)
[00000494] main audio output debug: input 'a52 ' 44100 Hz Stereo frame=1536 samples/278 bytes
[00000494] main audio output debug: filter(s) 'a52 '->'fl32' 44100 Hz->44100 Hz Stereo->Stereo
[00000497] main audio output debug: looking for audio filter module: 24 candidates
No accelerated IMDCT transform found
[00000497] main audio output debug: using audio filter module "a52tofloat32"
[00000497] main audio output debug: TIMER module_Need() : 1.638 ms - Total 1.638 ms / 1 intvls (Avg 1.638 ms)
[00000494] main audio output debug: found a filter for the whole conversion
[00000494] main audio output debug: filter(s) 'fl32'->'fl32' 48510 Hz->44100 Hz Stereo->Stereo
[00000504] main audio output debug: looking for audio filter module: 24 candidates
[00000504] main audio output debug: using audio filter module "bandlimited_resampler"
[00000504] main audio output debug: TIMER module_Need() : 0.252 ms - Total 0.252 ms / 1 intvls (Avg 0.252 ms)
[00000494] main audio output debug: found a filter for the whole conversion
[00000494] main audio output debug: removing module "float32_mixer"
[00000494] main audio output debug: looking for audio mixer module: 3 candidates
[00000494] main audio output debug: using audio mixer module "trivial_mixer"
[00000494] main audio output debug: TIMER module_Need() : 0.190 ms - Total 0.190 ms / 1 intvls (Avg 0.190 ms)
[00000494] pulse audio output debug: Pulse stream started
[00000497] main audio output debug: removing module "a52tofloat32"
[00000504] main audio output debug: removing module "bandlimited_resampler"
[00000494] pulse audio output debug: Pulse Close
[00000494] main audio output debug: removing module "pulse"
[00000494] main audio output debug: removing module "trivial_mixer"
[00000494] main audio output debug: looking for audio output module: 6 candidates
[00000494] pulse audio output: No. of Audio Channels: 2
[00000494] pulse audio output debug: Pulse mainloop started
[00000494] pulse audio output debug: Pulse stream connected
[00000494] pulse audio output debug: Pulse initialized successfully
[00000494] pulse audio output debug: Buffer metrics: maxlength=88200, tlength=79376, prebuf=39688, minreq=7936
[00000494] pulse audio output debug: Using sample spec 'float32le 2ch 44100Hz', channel map 'front-left,front-right'.
[00000494] pulse audio output debug: Connected to device alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0 (0, not suspended).
[00000494] main audio output debug: using audio output module "pulse"
[00000494] main audio output debug: TIMER module_Need() : 3.336 ms - Total 3.336 ms / 1 intvls (Avg 3.336 ms)
[00000494] main audio output debug: output 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: mixer 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: no need for any filter
[00000494] main audio output debug: looking for audio mixer module: 3 candidates
[00000494] main audio output debug: using audio mixer module "float32_mixer"
[00000494] main audio output debug: TIMER module_Need() : 0.117 ms - Total 0.117 ms / 1 intvls (Avg 0.117 ms)
[00000494] main audio output debug: input 'a52 ' 44100 Hz Stereo frame=1536 samples/280 bytes
[00000494] main audio output debug: filter(s) 'a52 '->'fl32' 44100 Hz->44100 Hz Stereo->Stereo
[00000508] main audio output debug: looking for audio filter module: 24 candidates
No accelerated IMDCT transform found
[00000508] main audio output debug: using audio filter module "a52tofloat32"
[00000508] main audio output debug: TIMER module_Need() : 0.868 ms - Total 0.868 ms / 1 intvls (Avg 0.868 ms)
[00000494] main audio output debug: found a filter for the whole conversion
[00000494] main audio output debug: filter(s) 'fl32'->'fl32' 48510 Hz->44100 Hz Stereo->Stereo
[00000509] main audio output debug: looking for audio filter module: 24 candidates
[00000509] main audio output debug: using audio filter module "bandlimited_resampler"
[00000509] main audio output debug: TIMER module_Need() : 0.169 ms - Total 0.169 ms / 1 intvls (Avg 0.169 ms)
[00000494] main audio output debug: found a filter for the whole conversion
[00000494] pulse audio output debug: Pulse stream started
[00000494] main audio output debug: removing module "float32_mixer"
[00000494] main audio output debug: looking for audio mixer module: 3 candidates
[00000494] main audio output debug: using audio mixer module "trivial_mixer"
[00000494] main audio output debug: TIMER module_Need() : 0.125 ms - Total 0.125 ms / 1 intvls (Avg 0.125 ms)
[00000508] main audio output debug: removing module "a52tofloat32"
[00000509] main audio output debug: removing module "bandlimited_resampler"
[00000494] pulse audio output debug: Pulse Close
[00000429] qt4 interface debug: Error while initializing qt-specific localization
[00000429] qt4 interface debug: Updating the stream status: 3
[00000494] main audio output debug: removing module "pulse"
[00000494] main audio output debug: removing module "trivial_mixer"
[00000494] main audio output debug: looking for audio output module: 6 candidates
[00000494] pulse audio output: No. of Audio Channels: 2
[00000494] pulse audio output debug: Pulse mainloop started
[00000494] pulse audio output debug: Pulse stream connected
[00000494] pulse audio output debug: Pulse initialized successfully
[00000494] pulse audio output debug: Buffer metrics: maxlength=88200, tlength=79376, prebuf=39688, minreq=7936
[00000494] pulse audio output debug: Using sample spec 'float32le 2ch 44100Hz', channel map 'front-left,front-right'.
[00000494] pulse audio output debug: Connected to device alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0 (0, not suspended).
[00000494] main audio output debug: using audio output module "pulse"
[00000494] main audio output debug: TIMER module_Need() : 2.161 ms - Total 2.161 ms / 1 intvls (Avg 2.161 ms)
[00000494] main audio output debug: output 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: mixer 'fl32' 44100 Hz Stereo frame=1 samples/8 bytes
[00000494] main audio output debug: no need for any filter
[00000494] main audio output debug: looking for audio mixer module: 3 candidates
[00000494] main audio output debug: using audio mixer module "float32_mixer"
[00000494] main audio output debug: TIMER module_Need() : 0.103 ms - Total 0.103 ms / 1 intvls (Avg 0.103 ms)
[00000494] main audio output debug: input 'a52 ' 44100 Hz Stereo frame=1536 samples/278 bytes
[00000494] main audio output debug: filter(s) 'a52 '->'fl32' 44100 Hz->44100 Hz Stereo->Stereo
[00000510] main audio output debug: looking for audio filter module: 24 candidates
No accelerated IMDCT transform found

Similiar cycle code

[dr.highman]

a52dec can play test.ac3 correctly.
Issue is still that vlc can not play it, which also use a52.

[Jean-Baptiste Kempf]

ftp://streams.videolan.org/

[Shakama]

i got the same problem i think, i got another thread about it. the problem is with the ac-3 sound