Bug#735447: vlc: in vlc audio is sometimes there, sometimes not there.

shirish शिरीष shirishag75 at gmail.com
Wed Jan 15 14:05:28 UTC 2014


Package: vlc
Version: 2.1.2-2
Severity: normal

Hi all,
In vlc sometimes the audio is there, sometimes not. This is from a vlc
-vvvv session of a media file I was playing :-

[0x22f2de8] pulse audio output debug: cannot synchronize start
[0x22f2de8] pulse audio output debug: deferring start (8168 us)
[0x22f2de8] pulse audio output warning: starting late (-25140 us)
[0x22f2de8] pulse audio output debug: started
[0x22f2de8] pulse audio output debug: underflow
[0x22f2de8] pulse audio output debug: changing sink 0:
alsa_output.pci-0000_00_1b.0.analog-stereo (Built-in Audio Analog
Stereo)
[0x7fa8d8001248] main vout display debug: auto hiding mouse cursor
[0x7fa8d8001248] main vout display debug: auto hiding mouse cursor
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x1] using Sync Sample Box (stss)
[0x7fa8f8c01998] mp4 demux debug: stts gives 93732 --> 93602 (sample number)
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x3] does not provide Sync
Sample Box (stss)
[0x22f2de8] pulse audio output debug: underflow
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x7fa8f9f8ac88] main decoder debug: End of audio preroll
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x22f2de8] pulse audio output debug: underflow
[0x7fa91534c8e8] main input debug: Buffering 33%
[0x7fa91534c8e8] main input debug: Buffering 66%
[0x7fa91534c8e8] main input debug: Buffering 99%
[0x7fa91534c8e8] main input debug: Stream buffering done (399 ms in 62 ms)
[0x7fa8d8001248] main vout display debug: auto hiding mouse cursor
[0x7fa8f9f7d988] main decoder debug: End of video preroll
[0x7fa8f9f7d988] main decoder debug: Received first picture
[0x7fa91534c8e8] main input debug: Decoder buffering done in 1797 ms
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x1] using Sync Sample Box (stss)
[0x7fa8f8c01998] mp4 demux debug: stts gives 118251 --> 118049 (sample number)
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x3] does not provide Sync
Sample Box (stss)
[0x22f2de8] pulse audio output debug: underflow
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x7fa8f9f8ac88] main decoder debug: End of audio preroll
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x22f2de8] pulse audio output debug: underflow
[0x7fa91534c8e8] main input debug: Buffering 33%
[0x7fa91534c8e8] main input debug: Buffering 66%
[0x7fa91534c8e8] main input debug: Buffering 99%
[0x7fa91534c8e8] main input debug: Stream buffering done (399 ms in 61 ms)
[0x7fa8f9f7d988] main decoder debug: End of video preroll
[0x7fa8f9f7d988] main decoder debug: Received first picture
[0x7fa91534c8e8] main input debug: Decoder buffering done in 2109 ms
[0x7fa8ec007e78] main video output warning: picture is too late to be
displayed (missing 58 ms)
[0x7fa8ec007e78] main video output debug: picture might be displayed
late (missing 17 ms)
[0x7fa8d8010a48] main xml reader debug: looking for xml reader module
matching "any": 1 candidates
[0x7fa8d8010a48] main xml reader debug: using xml reader module "xml"
[0x7fa8d8001248] main vout display debug: auto hiding mouse cursor
[0x22f2de8] pulse audio output debug: underflow
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x1] using Sync Sample Box (stss)
[0x7fa8f8c01998] mp4 demux debug: stts gives 123267 --> 123219 (sample number)
[0x7fa8f8c01998] mp4 demux debug: track[Id 0x3] does not provide Sync
Sample Box (stss)
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x7fa8f9f8ac88] main decoder debug: End of audio preroll
[0x22f2de8] pulse audio output debug: underflow
[0x7fa91534c8e8] main input debug: Buffering 0%
[0x7fa91534c8e8] main input debug: Buffering 33%
[0x7fa91534c8e8] main input debug: Buffering 66%
[0x7fa91534c8e8] main input debug: Buffering 99%
[0x7fa91534c8e8] main input debug: Stream buffering done (399 ms in 29 ms)
[0x7fa8f9f7d988] main decoder debug: End of video preroll
[0x7fa8f9f7d988] main decoder debug: Received first picture
[0x7fa91534c8e8] main input debug: Decoder buffering done in 592 ms
[0x7fa8ec007e78] main video output debug: picture might be displayed
late (missing 15 ms)
[0x22f2de8] pulse audio output debug: underflow
[0x22f2de8] main audio output warning: playback way too early
(-584050): playing silence
[0x22f2de8] main audio output debug: inserting 28034 zeroes

I am usually able to play the audio after using the slider (for going
forward  and backward) and somewhere get the audio.

Looking forward to know what the issue might be ?

I also took the liberty of getting pulseaudio details in case if they
are helpful to figure this out. I have no idea if the bug is in vlc or
pulseaudio or the codecs in libavcodec.

$ pulseaudio --version
pulseaudio 4.0

$ pacmd list-sinks
Welcome to PulseAudio! Use "help" for usage information.
>>> 1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
FLAT_VOLUME DYNAMIC_LATENCY
	state: RUNNING
	suspend cause:
	priority: 9959
	volume: 0: 130% 1: 130%
	        0: 6.84 dB 1: 6.84 dB
	        balance 0.00
	base volume: 100%
	             0.00 dB
	volume steps: 65537
	muted: no
	current latency: 39.79 ms
	max request: 7 KiB
	max rewind: 64 KiB
	monitor source: 0
	sample spec: s16le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	used by: 1
	linked by: 1
	configured latency: 40.00 ms; range is 0.50 .. 341.33 ms
	card: 0 <alsa_card.pci-0000_00_1b.0>
	module: 5
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "VT1705 Analog"
		alsa.id = "VT1705 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel"
		alsa.long_card_name = "HDA Intel at 0xfea78000 irq 44"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "27d8"
		device.product.name = "NM10/ICH7 Family High Definition Audio Controller"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "65536"
		device.buffering.fragment_size = "32768"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		alsa.mixer_name = "VIA VT1705"
		alsa.components = "HDA:11064397,104383a1,00100000"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output: Analog Output (priority 9900, latency offset 0 usec,
available: unknown)
			properties:
				
		analog-output-headphones: Headphones (priority 9000, latency offset
0 usec, available: no)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output>


-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (600, 'testing'), (500, 'testing-updates'), (1,
'experimental'), (1, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.12-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages vlc depends on:
ii  dpkg                      1.17.5
ii  fonts-freefont-ttf        20120503-1
ii  libaa1                    1.4p5-41
ii  libavcodec-extra-54       6:9.10-2
ii  libavutil52               6:9.10-2
ii  libc6                     2.17-97
ii  libcaca0                  0.99.beta18-1
ii  libfreetype6              2.5.2-1
ii  libfribidi0               0.19.6-1
ii  libgcc1                   1:4.8.2-12
ii  libgl1-mesa-glx [libgl1]  9.2.2-1
ii  libice6                   2:1.0.8-2
ii  libqtcore4                4:4.8.5+git192-g085f851+dfsg-2
ii  libqtgui4                 4:4.8.5+git192-g085f851+dfsg-2
ii  libsdl-image1.2           1.2.12-5+b1
ii  libsdl1.2debian           1.2.15-8
ii  libsm6                    2:1.2.1-2
ii  libstdc++6                4.8.2-12
ii  libtar0                   1.2.20-1
ii  libva-x11-1               1.2.1-2
ii  libva1                    1.2.1-2
ii  libvlccore7               2.1.2-2
ii  libx11-6                  2:1.6.2-1
ii  libxcb-composite0         1.10-2
ii  libxcb-keysyms1           0.3.9-1
ii  libxcb-randr0             1.10-2
ii  libxcb-render0            1.10-2
ii  libxcb-shape0             1.10-2
ii  libxcb-shm0               1.10-2
ii  libxcb-xfixes0            1.10-2
ii  libxcb-xv0                1.10-2
ii  libxcb1                   1.10-2
ii  libxext6                  2:1.3.2-1
ii  libxinerama1              2:1.1.3-1
ii  libxpm4                   1:3.5.10-1
ii  vlc-nox                   2.1.2-2
ii  zlib1g                    1:1.2.8.dfsg-1

Versions of packages vlc recommends:
ii  vlc-plugin-notify  2.1.2-2
ii  vlc-plugin-pulse   2.1.2-2
ii  xdg-utils          1.1.0~rc1+git20111210-7

Versions of packages vlc suggests:
pn  videolan-doc  <none>

Versions of packages vlc-nox depends on:
ii  dpkg                       1.17.5
ii  liba52-0.7.4               0.7.4-16
ii  libasound2                 1.0.27.2-3
ii  libass4                    0.10.1-3
ii  libavahi-client3           0.6.31-4
ii  libavahi-common3           0.6.31-4
ii  libavc1394-0               0.5.4-2
ii  libavcodec-extra-54        6:9.10-2
ii  libavformat54              6:9.10-2
ii  libavutil52                6:9.10-2
ii  libbasicusageenvironment0  2013.10.25-1
ii  libbluray1                 1:0.4.0-1
ii  libc6                      2.17-97
ii  libcddb2                   1.3.2-4
ii  libcdio13                  0.83-4.1
ii  libchromaprint0            1.1-1
ii  libcrystalhd3              1:0.0~git20110715.fdd2f19-9
ii  libdbus-1-3                1.6.18-2
ii  libdc1394-22               2.2.1-2
ii  libdca0                    0.0.5-6
ii  libdirac-decoder0          1.0.2-6
ii  libdirac-encoder0          1.0.2-6
ii  libdirectfb-1.2-9          1.2.10.0-5
ii  libdvbpsi8                 1.0.0-3
ii  libdvdnav4                 4.2.0+20130225-4
ii  libdvdread4                4.2.1-2
ii  libebml4                   1.3.0-2
ii  libfaad2                   2.7-8
ii  libflac8                   1.3.0-2
ii  libfontconfig1             2.11.0-2
ii  libfreerdp1                1.0.2-3
ii  libfreetype6               2.5.2-1
ii  libfribidi0                0.19.6-1
ii  libgcc1                    1:4.8.2-12
ii  libgcrypt11                1.5.3-3
ii  libgnutls28                3.2.8.1-2
ii  libgpg-error0              1.12-0.2
ii  libgroupsock1              2013.10.25-1
ii  libiso9660-8               0.83-4.1
ii  libkate1                   0.4.1-1
ii  liblircclient0             0.9.0~pre1-1
ii  liblivemedia15             2013.10.25-1
ii  liblua5.2-0                5.2.2-3
ii  libmad0                    0.15.1b-8
ii  libmatroska6               1.4.1-2
ii  libmodplug1                1:0.8.8.4-4
ii  libmpcdec6                 2:0.1~r459-4
ii  libmpeg2-4                 0.5.1-5
ii  libmtp9                    1.1.6-20-g1b9f164-1
ii  libncursesw5               5.9+20130608-1
ii  libogg0                    1.3.1-1
ii  libopus0                   1.1-1
ii  libpng12-0                 1.2.49-5
ii  libpostproc52              6:0.git20120821-4
ii  libraw1394-11              2.1.0-1
ii  libresid-builder0c2a       2.1.1-14
ii  libsamplerate0             0.1.8-5
ii  libschroedinger-1.0-0      1.0.11-2
ii  libshout3                  2.3.1-3
ii  libsidplay2                2.1.1-14
ii  libsmbclient               2:4.1.3+dfsg-2
ii  libspeex1                  1.2~rc1.1-1
ii  libspeexdsp1               1.2~rc1.1-1
ii  libssh2-1                  1.4.3-2
ii  libstdc++6                 4.8.2-12
ii  libswscale2                6:9.10-2
ii  libtag1c2a                 1.9.1-2
ii  libtheora0                 1.1.1+dfsg.1-3.1
ii  libtinfo5                  5.9+20130608-1
ii  libtwolame0                0.3.13-1
ii  libudev1                   204-6
ii  libupnp6                   1:1.6.17-1.2
ii  libusageenvironment1       2013.10.25-1
ii  libusb-1.0-0               2:1.0.17-1+b1
ii  libvcdinfo0                0.7.24+dfsg-0.1
ii  libvlc5                    2.1.2-2
ii  libvlccore7                2.1.2-2
ii  libvorbis0a                1.3.2-1.3
ii  libvorbisenc2              1.3.2-1.3
ii  libx264-133                2:0.133.2339+git585324f-2+b1
ii  libxml2                    2.9.1+dfsg1-3
ii  libzvbi0                   0.2.33-7
ii  zlib1g                     1:1.2.8.dfsg-1

Versions of packages vlc-nox recommends:
pn  libdvdcss2  <none>

Versions of packages libvlc5 depends on:
ii  dpkg         1.17.5
ii  libc6        2.17-97
ii  libvlccore7  2.1.2-2

Versions of packages libvlccore7 depends on:
ii  dpkg            1.17.5
ii  libc6           2.17-97
ii  libdbus-1-3     1.6.18-2
ii  libidn11        1.28-1
ii  libproxy-tools  0.4.11-4
ii  vlc-data        2.1.2-2

Versions of packages vlc is related to:
pn  libavutil50  <none>
ii  libavutil51  6:0.8.7-1

-- no debconf information


-- 
          Regards,
          Shirish Agarwal  शिरीष अग्रवाल
  My quotes in this email licensed under CC 3.0
http://creativecommons.org/licenses/by-nc/3.0/
http://flossexperiences.wordpress.com
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