Question

7

Record desktop and microphone audio with Avconv

rated 0 times [ 7] [ 0] / answers: 1 / hits: 4888 / 3 Years ago, thu, october 21, 2021, 3:14:47

I'm using Avconv on Ubuntu 13.10 with Gnome 3.10 to record Minecraft screencasts. However, I can only get the sound from my microphone and not the laptop speaker. How would I go about recording both laptop and microphone? I'm using a USB headset with a microphone.

Info requested by @Sneetsher:

The actual command:

avconv -f pulse -i default -b 64k -f x11grab -r 25 -s 1280x800 -i :0.0 -vcodec libx264 -preset ultrafast -threads 4 -y myscreencast2.mp4

PulseAudio info:

$ pactl list short



0   module-device-restore       

1   module-stream-restore       

2   module-card-restore     

3   module-augment-properties       

4   module-switch-on-port-available     

5   module-alsa-card    device_id="0" name="pci-0000_00_1b.0" card_name="alsa_card.pci-0000_00_1b.0" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1"    

6   module-alsa-card    device_id="1" name="usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device" card_name="alsa_card.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1"  

7   module-udev-detect      

8   module-bluetooth-policy     

9   module-bluetooth-discover       

10  module-native-protocol-unix     

11  module-default-device-restore       

12  module-rescue-streams       

13  module-always-sink      

14  module-intended-roles       

15  module-suspend-on-idle      

16  module-systemd-login        

17  module-position-event-sounds        

18  module-filter-heuristics        

19  module-filter-apply     

20  module-x11-publish  display=:0  

21  module-x11-bell display=:0 sample=bell.ogg  

22  module-x11-cork-request display=:0  

23  module-x11-xsmp display=:0 session_manager=local/MELVIN-124833:@/tmp/.ICE-unix/2013,unix/MELVIN-124833:/tmp/.ICE-unix/2013  

0   alsa_output.pci-0000_00_1b.0.analog-stereo  module-alsa-card.c  s16le 2ch 44100Hz   IDLE

1   alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.iec958-stereo   module-alsa-card.c  s16le 2ch 44100Hz   IDLE

0   alsa_output.pci-0000_00_1b.0.analog-stereo.monitor  module-alsa-card.c  s16le 2ch 44100Hz   RUNNING

1   alsa_input.pci-0000_00_1b.0.analog-stereo   module-alsa-card.c  s16le 2ch 44100Hz   RUNNING

2   alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.iec958-stereo.monitor   module-alsa-card.c  s16le 2ch 44100Hz   RUNNING

3   alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.analog-mono  module-alsa-card.c  s16le 1ch 44100Hz   RUNNING

15  0   28  protocol-native.c   float32le 1ch 25Hz

16  1   28  protocol-native.c   float32le 1ch 25Hz

17  2   28  protocol-native.c   float32le 1ch 25Hz

18  3   28  protocol-native.c   float32le 1ch 25Hz

0   module-systemd-login.c  (null)

5   module-x11-xsmp.c   (null)

6   protocol-native.c   gnome-settings-daemon

7   protocol-native.c   gnome-shell

8   protocol-native.c   gnome-shell

9   protocol-native.c   chrome

28  protocol-native.c   pavucontrol

36  protocol-native.c   pactl

0   screen-capture  s16le 2ch 96000Hz   0.872

1   bell-window-system  s16le 2ch 44100Hz   0.749

0   alsa_card.pci-0000_00_1b.0  module-alsa-card.c

1   alsa_card.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device   module-alsa-card.c



$ pactl stats



Currently in use: 12 blocks containing 548.2 KiB bytes total.

Allocated during whole lifetime: 7254422 blocks containing 2.9 GiB bytes total.

Sample cache size: 456.2 KiB

Server String: unix:/run/user/1000/pulse/native

Library Protocol Version: 28

Server Protocol Version: 28

Is Local: yes

Client Index: 37

Tile Size: 65496

User Name: guilmon

Host Name: MELVIN-124833

Server Name: pulseaudio

Server Version: 4.0

Default Sample Specification: s16le 2ch 44100Hz

Default Channel Map: front-left,front-right

Default Sink: alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.iec958-stereo

Default Source: alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.iec958-stereo.monitor

Cookie: 3f2a:1764

enter image description here

Updated Screenshots:

enter image description here

$ pactl list sources



Source #0

    State: SUSPENDED

    Name: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor

    Description: Monitor of Built-in Audio Analogue Stereo

    Driver: module-alsa-card.c

    Sample Specification: s16le 2ch 44100Hz

    Channel Map: front-left,front-right

    Owner Module: 5

    Mute: no

    Volume: 0:  20% 1:  20%

            0: -42.50 dB 1: -42.50 dB

            balance 0.00

    Base Volume: 100%

                 0.00 dB

    Monitor of Sink: alsa_output.pci-0000_00_1b.0.analog-stereo

    Latency: 0 usec, configured 0 usec

    Flags: DECIBEL_VOLUME LATENCY 

    Properties:

        device.description = "Monitor of Built-in Audio Analogue Stereo"

        device.class = "monitor"

        alsa.card = "0"

        alsa.card_name = "HDA Intel"

        alsa.long_card_name = "HDA Intel at 0xe4644000 irq 48"

        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 = "284b"

        device.product.name = "82801H (ICH8 Family) HD Audio Controller"

        device.form_factor = "internal"

        device.string = "0"

        module-udev-detect.discovered = "1"

        device.icon_name = "audio-card-pci"

    Formats:

        pcm



Source #1

    State: SUSPENDED

    Name: alsa_input.pci-0000_00_1b.0.analog-stereo

    Description: Built-in Audio Analogue Stereo

    Driver: module-alsa-card.c

    Sample Specification: s16le 2ch 44100Hz

    Channel Map: front-left,front-right

    Owner Module: 5

    Mute: no

    Volume: 0:  84% 1:  84%

            0: -4.50 dB 1: -4.50 dB

            balance 0.00

    Base Volume:  13%

                 -52.50 dB

    Monitor of Sink: n/a

    Latency: 0 usec, configured 0 usec

    Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 

    Properties:

        alsa.resolution_bits = "16"

        device.api = "alsa"

        device.class = "sound"

        alsa.class = "generic"

        alsa.subclass = "generic-mix"

        alsa.name = "AD198x Analog"

        alsa.id = "AD198x 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 0xe4644000 irq 48"

        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 = "284b"

        device.product.name = "82801H (ICH8 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 = "Analogue Stereo"

        device.description = "Built-in Audio Analogue Stereo"

        alsa.mixer_name = "Analog Devices AD1981"

        alsa.components = "HDA:11d41981,103c30be,00100200 HDA:14f12c06,103c1379,00100000"

        module-udev-detect.discovered = "1"

        device.icon_name = "audio-card-pci"

    Ports:

        analog-input-microphone-internal: Internal Microphone (priority: 8900)

        analog-input-microphone-dock: Dock Microphone (priority: 7800)

        analog-input-microphone: Microphone (priority: 8700)

    Active Port: analog-input-microphone

    Formats:

        pcm



Source #5

    State: SUSPENDED

    Name: alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.analog-mono

    Description: USB PnP Sound Device Analogue Mono

    Driver: module-alsa-card.c

    Sample Specification: s16le 1ch 48000Hz

    Channel Map: mono

    Owner Module: 26

    Mute: no

    Volume: 0:  85%

            0: -4.10 dB

            balance 0.00

    Base Volume:  40%

                 -23.81 dB

    Monitor of Sink: n/a

    Latency: 0 usec, configured 0 usec

    Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 

    Properties:

        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 = "USB PnP Sound Device"

        alsa.long_card_name = "C-Media Electronics Inc. USB PnP Sound Device at usb-0000:00:1d.2-2, full speed"

        alsa.driver_name = "snd_usb_audio"

        device.bus_path = "pci-0000:00:1d.2-usb-0:2:1.0"

        sysfs.path = "/devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/sound/card1"

        udev.id = "usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device"

        device.bus = "usb"

        device.vendor.id = "0d8c"

        device.vendor.name = "C-Media Electronics, Inc."

        device.product.id = "0139"

        device.product.name = "USB PnP Sound Device"

        device.serial = "C-Media_Electronics_Inc._USB_PnP_Sound_Device"

        device.string = "hw:1"

        device.buffering.buffer_size = "176400"

        device.buffering.fragment_size = "88200"

        device.access_mode = "mmap+timer"

        device.profile.name = "analog-mono"

        device.profile.description = "Analogue Mono"

        device.description = "USB PnP Sound Device Analogue Mono"

        alsa.mixer_name = "USB Mixer"

        alsa.components = "USB0d8c:0139"

        module-udev-detect.discovered = "1"

        device.icon_name = "audio-card-usb"

    Ports:

        analog-input-microphone: Microphone (priority: 8700)

    Active Port: analog-input-microphone

    Formats:

        pcm



Source #8

    State: SUSPENDED

    Name: alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.analog-stereo.monitor

    Description: Monitor of USB PnP Sound Device Analogue Stereo

    Driver: module-alsa-card.c

    Sample Specification: s16le 2ch 44100Hz

    Channel Map: front-left,front-right

    Owner Module: 26

    Mute: no

    Volume: 0: 100% 1: 100%

            0: 0.00 dB 1: 0.00 dB

            balance 0.00

    Base Volume: 100%

                 0.00 dB

    Monitor of Sink: alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.analog-stereo

    Latency: 0 usec, configured 0 usec

    Flags: DECIBEL_VOLUME LATENCY 

    Properties:

        device.description = "Monitor of USB PnP Sound Device Analogue Stereo"

        device.class = "monitor"

        alsa.card = "1"

        alsa.card_name = "USB PnP Sound Device"

        alsa.long_card_name = "C-Media Electronics Inc. USB PnP Sound Device at usb-0000:00:1d.2-2, full speed"

        alsa.driver_name = "snd_usb_audio"

        device.bus_path = "pci-0000:00:1d.2-usb-0:2:1.0"

        sysfs.path = "/devices/pci0000:00/0000:00:1d.2/usb7/7-2/7-2:1.0/sound/card1"

        udev.id = "usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device"

        device.bus = "usb"

        device.vendor.id = "0d8c"

        device.vendor.name = "C-Media Electronics, Inc."

        device.product.id = "0139"

        device.product.name = "USB PnP Sound Device"

        device.serial = "C-Media_Electronics_Inc._USB_PnP_Sound_Device"

        device.string = "1"

        module-udev-detect.discovered = "1"

        device.icon_name = "audio-card-usb"

    Formats:

        pcm

Answers

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2 Years ago

answered 3 Years ago montwim · Accepted Answer

Install Pulse Audio Control
```
sudo apt-get install pavucontrol
```

Only playback record (no microphone)

Open it → Input Devices → Show: All input devices → Use Green Button to the right to Select "Monitor: Analog Audio"

There are different channel names but You can run some player and see which has signal.

When Gnome Volume Control is opened, It overrides it back to Microphone. I have noticed that in the late releases 13.04, 13.10, 14.04. It cannot be changed back using Gnome Volume Control. (Avoid using it on recording)

Pulse Audio Control : Input Devices

Both microphone and playback mixed: pactl CLI could be used. Exmaple:

Check name of sink

$ pactl list short sinks

0   alsa_output.pci-0000_01_00.1.hdmi-stereo    module-alsa-card.c  s16le 2ch 44100Hz   SUSPENDED

1   alsa_output.pci-0000_00_1b.0.analog-stereo  module-alsa-card.c  s16le 2ch 44100Hz   SUSPENDED

Loopback microphone source to analog sink

$ pactl load-module module-loopback latency_msec=1 sink=alsa_output.pci-0000_00_1b.0.analog-stereo

30

Use same step above to select the correct input device.

To close it:

$ pactl unload-module 30

or using name:

$ pactl unload-module module-loopback

To check module id:

$ pactl list short modules

In case, Unable to find a Playback Analog Monitor in the Input Devices
1. Check Configuration tab, it should be Full Duplex (Input/Output)
2. Otherwise, It is possible to create a virtual output device then loop it back.
```
pactl load-module module-null-sink sink_name=Virtual1

pactl load-module module-loopback latency_msec=1 sink=Virtual1
```
3. Then use Pulse Audio Control, Same step above to select the correct input device Virtual1.
4. For output device:
  - Use Output Devices tab if all mixed system output needed.
  - Or use Playback tab if only some application output needed (like: just VLC music play ...). In this case you can record somethings and listen to somethings else.
As reference see, How can I use PulseAudio virtual audio streams to play music over Skype?

if it didn't work (your case as example)

Check exact name of "Analog Stereo Output" sink
```
pactl list sinks
```

Loop back microphone to "Analog Stereo Output"

pactl load-module module-loopback latency_msec=1 sink=alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.ana‌log-stereo

Check exact name of "Analog Stereo Output Monitor" source
```
pactl list sources
```

Then Record directly by specifying device name of "Analog Stereo Output Monitor", Example in your case:

avconv -f pulse -i "alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00-Device.analog-‌stereo.monitor" -b 64k -f x11grab -r 25 -s 1280x800 -i :0.0 -vcodec libx264 -preset ultrafast -threads 4 -y myscreencast2.mp4