usb video capture device: video displayed OK but NO sound?
By Emily Wilson •
I'm trying to digitize my old Video8 videos with a Terratec GrabsterAV350MX usb device on a Kubuntu system. Video display, and capture on basis of v4l2 is no problem.
However I cannot get any sound. "Playing" around with PulseAudio all of a sudden I surpringly got a reaction on one of the volume meters and succeeded to record the video sound with the following code:
avconv -f alsa -ac 2 -ar 48000 -f pulse -i alsa_input.usb-0ccd_Grabster_AV_350-01-G350.analog-stereo -acodec libvorbis -aq 6 test.oggSo, in principle it works. The unfortunate thing is that I cannot repeat this anymore, and being new to consciously using PuleAudio I am afraid the notes I took while experimenting are not complete.
Can anyone advise which settings I have to do that I can playback/record from this usb capture device?
Here the typical dumps:
~$ aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: Intel [HDA Intel], Gerät 0: VT1708S Analog [VT1708S Analog] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0
Karte 0: Intel [HDA Intel], Gerät 3: VT1708S Digital [VT1708S Digital] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0
~$ arecord -l
**** Liste der Hardware-Geräte (CAPTURE) ****
Karte 0: Intel [HDA Intel], Gerät 0: VT1708S Analog [VT1708S Analog] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0
Karte 1: G350 [Grabster AV 350], Gerät 0: USB Audio [USB Audio] Sub-Geräte: 1/1 Sub-Gerät #0: subdevice #0
~$ pactl list short sinks | cut -f2
alsa_output.pci-0000_00_1b.0.analog-stereo
alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer
~$ pactl list short sources | cut -f2
alsa_input.usb-0ccd_Grabster_AV_350-01-G350.analog-stereo
alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
alsa_input.pci-0000_00_1b.0.analog-stereo
alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer.monitor
~$ pactl list sinks
Sink #0 Status: SUSPENDED Name: alsa_output.pci-0000_00_1b.0.analog-stereo Beschreibung: Internes Audio Analog Stereo Treiber: module-alsa-card.c Sample-Angabe: s16le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzermodul: 6 Stumm: no Lautstärke: 0: 100% 1: 100% 0: 0,00 dB 1: 0,00 dB Verteilung 0,00 Basislautstärke: 100% 0,00 dB Quellenüberwachung: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor Latenz: 0 usec, eingestellt 0 usec Merkmale: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY Eigenschaften: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "VT1708S Analog" alsa.id = "VT1708S 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 0xf9ff8000 irq 45" 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 = "3a3e" device.product.name = "82801JI (ICH10 Family) HD 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 = "Internes Audio Analog Stereo" alsa.mixer_name = "VIA VT1708S" alsa.components = "HDA:11060397,10438346,00100000" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Profile: analog-output: Analoge Ausgabe (priority: 9900) analog-output-headphones: Analoge Kopfhörer (priority: 9000, not available) Aktive Profile: analog-output Formate: pcm
Sink #1 Status: SUSPENDED Name: alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer Beschreibung: FFT based equalizer on Internes Audio Analog Stereo Treiber: module-equalizer-sink.c Sample-Angabe: float32le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzermodul: 22 Stumm: no Lautstärke: 0: 100% 1: 100% Verteilung 0,00 Basislautstärke: 100% Quellenüberwachung: alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer.monitor Latenz: 0 usec, eingestellt 0 usec Merkmale: HW_MUTE_CTRL LATENCY Eigenschaften: device.description = "FFT based equalizer on Internes Audio Analog Stereo" device.master_device = "alsa_output.pci-0000_00_1b.0.analog-stereo" device.class = "filter" device.icon_name = "audio-card" Formate: pcm
~$ pactl list sources
Quelle #0 Status: SUSPENDED Name: alsa_input.usb-0ccd_Grabster_AV_350-01-G350.analog-stereo Beschreibung: Grabster AV 350 Analog Stereo Treiber: module-alsa-card.c Sample-Angabe: s16le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzer-Modul: 5 Stumm: no Lautstärke: 0: 100% 1: 100% 0: 0,00 dB 1: 0,00 dB Verteilung 0,00 Basis-Lautstärke: 54% -16,00 dB Sink-Monitor: k. A. Latenz: 0 usec, eingestellt 0 usec Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY Eigenschaften: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "USB Audio" alsa.id = "USB Audio" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "1" alsa.card_name = "Grabster AV 350" alsa.long_card_name = "Grabster AV 350 at usb-0000:00:1a.7-6, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:1a.7-usb-0:6:1.1" sysfs.path = "/devices/pci0000:00/0000:00:1a.7/usb1/1-6/1-6:1.1/sound/card1" udev.id = "usb-0ccd_Grabster_AV_350-01-G350" device.bus = "usb" device.vendor.id = "0ccd" device.vendor.name = "TerraTec Electronic GmbH" device.product.id = "0084" device.product.name = "Grabster AV 350" device.serial = "0ccd_Grabster_AV_350" device.string = "front:1" device.buffering.buffer_size = "352800" device.buffering.fragment_size = "176400" device.access_mode = "mmap+timer" device.profile.name = "analog-stereo" device.profile.description = "Analog Stereo" device.description = "Grabster AV 350 Analog Stereo" alsa.mixer_name = "USB Mixer" alsa.components = "USB0ccd:0084" module-udev-detect.discovered = "1" device.icon_name = "audio-card-usb" Profile: analog-input-linein: Line In (priority: 8100) Aktive Profile: analog-input-linein Formate: pcm
Quelle #1 Status: SUSPENDED Name: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor Beschreibung: Monitor of Internes Audio Analog Stereo Treiber: module-alsa-card.c Sample-Angabe: s16le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzer-Modul: 6 Stumm: no Lautstärke: 0: 100% 1: 100% 0: 0,00 dB 1: 0,00 dB Verteilung 0,00 Basis-Lautstärke: 100% 0,00 dB Sink-Monitor: alsa_output.pci-0000_00_1b.0.analog-stereo Latenz: 0 usec, eingestellt 0 usec Flags: DECIBEL_VOLUME LATENCY Eigenschaften: device.description = "Monitor of Internes Audio Analog Stereo" device.class = "monitor" alsa.card = "0" alsa.card_name = "HDA Intel" alsa.long_card_name = "HDA Intel at 0xf9ff8000 irq 45" 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 = "3a3e" device.product.name = "82801JI (ICH10 Family) HD Audio Controller" device.form_factor = "internal" device.string = "0" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Formate: pcm
Quelle #2 Status: SUSPENDED Name: alsa_input.pci-0000_00_1b.0.analog-stereo Beschreibung: Internes Audio Analog Stereo Treiber: module-alsa-card.c Sample-Angabe: s16le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzer-Modul: 6 Stumm: yes Lautstärke: 0: 100% 1: 100% 0: 0,00 dB 1: 0,00 dB Verteilung 0,00 Basis-Lautstärke: 10% -60,75 dB Sink-Monitor: k. A. Latenz: 0 usec, eingestellt 0 usec Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY Eigenschaften: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "VT1708S Analog" alsa.id = "VT1708S 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 0xf9ff8000 irq 45" 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 = "3a3e" device.product.name = "82801JI (ICH10 Family) HD 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 = "Internes Audio Analog Stereo" alsa.mixer_name = "VIA VT1708S" alsa.components = "HDA:11060397,10438346,00100000" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Profile: analog-input-microphone-front: Mikrofon vorne (priority: 8500, not available) analog-input-microphone-rear: Mikrofon hinten (priority: 8200, available) analog-input-linein: Line In (priority: 8100, not available) Aktive Profile: analog-input-microphone-rear Formate: pcm
Quelle #3 Status: SUSPENDED Name: alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer.monitor Beschreibung: Monitor of FFT based equalizer on Internes Audio Analog Stereo Treiber: module-equalizer-sink.c Sample-Angabe: float32le 2ch 44100Hz Kanalzuordnung: front-left,front-right Besitzer-Modul: 22 Stumm: no Lautstärke: 0: 100% 1: 100% 0: 0,00 dB 1: 0,00 dB Verteilung 0,00 Basis-Lautstärke: 100% 0,00 dB Sink-Monitor: alsa_output.pci-0000_00_1b.0.analog-stereo.equalizer Latenz: 0 usec, eingestellt 0 usec Flags: DECIBEL_VOLUME LATENCY Eigenschaften: device.description = "Monitor of FFT based equalizer on Internes Audio Analog Stereo" device.class = "monitor" device.icon_name = "audio-input-microphone" Formate: pcmspeaker-test -t wav -c2 works allright.
There is one information, though, which I wonder whether or not it has any relevance, namely for the source #0 alsa_input.usb-0ccd_Grabster_AV_350-01-G350.analog-stereo there is no sink-monitor listed!?
I don't know anymore which screw to turn. I do hope someone in the forum has some systematic advise for me.
1 Answer
OK, modprobe setting was wrong. For all of you who will encounter the same problem see here:
[
The workaround is Grabby (while I turned crabby in the process of trying to find a solution):
sudo rmmod em28xx
sudo modprobe em28xx card=67instead of what would be the correct card
sudo rmmod em28xxsudo modprobe em28xx card=68
