Como alterar a webcam padrão? Alterando os dfaults no seletor Multimedia não funcionando

Question

Eu tenho o Logitech c920 configurado. Com a ajuda de um usuário experiente do AskUbuntu, eu instalei o GUVCview, o painel de controle do Video4 linux e o testador do utilitário QT V4L2 aqui. Eu posso mudar da webcam embutida da minha Toshiba para a minha webcam externa usando o GUVCview.

No entanto, quando inicio um videochat no Google Hangouts, ele seleciona automaticamente a câmera do meu laptop como padrão. Eu gostaria de alterar minhas configurações padrão para usar sempre a câmera externa, mas não consigo encontrar onde esta opção está. Estou executando o Windows 7 e o Ubuntu 12.04 LTS no Toshiba Satellite L755

memória: 3.8 gib

processador: CPU Intel® Core ™ i5-2410M a 2.30GHz × 4

gráficos: Intel® Sandybridge Mobile

tipo de SO de 64 bits

disco: 40,2 GB

EDIT: Eu tentei Gstreamer-properties no terminal e alterei a entrada padrão em vídeo para a cam externa da Logitech. Ainda sem sorte. Quando eu "testo" eu não obtenho nenhuma imagem, e ainda recebo o laptop quando abro o GUVC.

2nd EDIT: Depois de instalar o seletor Multi Media no terminal, eu ainda não consegui encontrá-lo no Dash. Aqui está a leitura depois de executar o comando:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
gconf-service is already the newest version.
gconf-service set to manually installed.
gconf2 is already the newest version.
gconf2 set to manually installed.
libatk1.0-0 is already the newest version.
libatk1.0-0 set to manually installed.
libgconf-2-4 is already the newest version.
libgconf-2-4 set to manually installed.
libgnome-media-profiles-3.0-0 is already the newest version.
libgnome-media-profiles-3.0-0 set to manually installed.
libgstreamer0.10-0 is already the newest version.
libgstreamer0.10-0 set to manually installed.
dpkg is already the newest version.
gnome-media is already the newest version.
gstreamer0.10-gconf is already the newest version.
gstreamer0.10-gconf set to manually installed.
gstreamer0.10-plugins-base is already the newest version.
gstreamer0.10-plugins-base set to manually installed.
gstreamer0.10-plugins-good is already the newest version.
gstreamer0.10-plugins-good set to manually installed.
libc6 is already the newest version.
libglib2.0-0 is already the newest version.
libgstreamer-plugins-base0.10-0 is already the newest version.
libgstreamer-plugins-base0.10-0 set to manually installed.
libgtk-3-0 is already the newest version.
libgtk-3-0 set to manually installed.
x11-utils is already the newest version.
x11-utils set to manually installed.
The following packages were automatically installed and are no longer required:
  gir1.2-ubuntuoneui-3.0 linux-headers-3.2.0-54 libubuntuoneui-3.0-1
  thunderbird-globalmenu linux-headers-3.2.0-54-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Se eu executar o Gstreamer-properties no terminal, recebo o seletor de multimídia. Eu altero a entrada padrão para externo, a luz azul na câmera externa acende (quando pressiono "teste"), mas não há imagem. Aqui está uma captura de tela de setings

3ªEDIÇÃO:Depoisdeexecutá-locomorootcomsudogstreamer-propertieseumudeiaentradapadrãoparawebcamHD(mesmasconfiguraçõescomocapturadetelaanterior)eaindaquandoeuabrooGUVCeleabrecomocâmeradelaptop.AquiestáoquealeiturafoidepoisdeexecutaroSUDO

(gstreamer-properties:15236):Gtk-WARNING**:Unknownproperty:GtkDialog.has-separator(gstreamer-properties:15236):Gtk-WARNING**:Unknownproperty:GtkDialog.has-separatorgstreamer-properties-Message:Skippingunavailableplugin'artsdsink'gstreamer-properties-Message:Skippingunavailableplugin'esdsink'gstreamer-properties-Message:Skippingunavailableplugin'sunaudiosink'gstreamer-properties-Message:Skippingunavailableplugin'glimagesink'gstreamer-properties-Message:Skippingunavailableplugin'sdlvideosink'gstreamer-properties-Message:Skippingunavailableplugin'v4lmjpegsrc'gstreamer-properties-Message:Skippingunavailableplugin'qcamsrc'gstreamer-properties-Message:Skippingunavailableplugin'v4lsrc'gstreamer-properties-Message:Skippingunavailableplugin'esdmon'gstreamer-properties-Message:Skippingunavailableplugin'sunaudiosrc'

QuandotenteifecharoTerminal,eledissequeoprocessoaindaestáemuso.

4ºEDIT,nodiaseguinte:

EuseguiolinkabaixoparaoDumindu

sudoapt-getinstallgstreamer-dbus-media-servicegstreamer-toolsgstreamer0.10-alsagstreamer0.10-buzztardgstreamer0.10-buzztard-docgstreamer0.10-crystalhdgstreamer0.10-docgstreamer0.10-ffmpeggstreamer0.10-ffmpeg-dbggstreamer0.10-fluendo-mp3gstreamer0.10-gconfgstreamer0.10-gnomevfsgstreamer0.10-gnonlingstreamer0.10-gnonlin-dbggstreamer0.10-gnonlin-docgstreamer0.10-hpluginsgstreamer0.10-nicegstreamer0.10-packagekitgstreamer0.10-plugins-badgstreamer0.10-plugins-bad-docgstreamer0.10-plugins-bad-multiversegstreamer0.10-plugins-basegstreamer0.10-plugins-base-appsgstreamer0.10-plugins-base-dbggstreamer0.10-plugins-base-docgstreamer0.10-plugins-cuttergstreamer0.10-plugins-goodgstreamer0.10-plugins-good-docgstreamer0.10-plugins-uglygstreamer0.10-plugins-ugly-docgstreamer0.10-pocketsphinxgstreamer0.10-pulseaudiogstreamer0.10-qaptgstreamer0.10-sdlgstreamer0.10-toolsgstreamer0.10-vaapigstreamer0.10-vaapi-docgstreamer0.10-x

eexecutouissopormeiodoterminal.Depoisdealgunsminutos,oscriptestavaprontoenãonoteifalhasouerros(voucolocaracópiaabaixo).Noentanto,quandoeuexecuteisudogstreamer-properties,recebiasmesmasmensagens"Ignorando o plugin não disponível" como acima ^. A entrada padrão no seletor de sistemas multimídia é configurada para c920 HD cam, mas acabei de abrir o GUVC e ele abre a câmera do laptop. Aqui está a leitura depois de sudo apt get install .... MUITOS PERSONAGENS, não consegui postar. Aqui está metade:

ad-multiverse_0.10.21-1_amd64.deb) ...
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Só queria verificar no Ubuntu Software Center para ter certeza de que o Gstreamer foi instalado e mostra tudo instalado

mike@Mike-Ubuntu12:~$ lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04f2:b289 Chicony Electronics Co., Ltd 
Bus 002 Device 003: ID 046d:082d Logitech, Inc. 
mike@Mike-Ubuntu12:~$ lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
        |__ Port 2: Dev 3, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
        |__ Port 2: Dev 3, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
        |__ Port 2: Dev 3, If 2, Class=audio, Driver=snd-usb-audio, 480M
        |__ Port 2: Dev 3, If 3, Class=audio, Driver=snd-usb-audio, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
        |__ Port 4: Dev 3, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
        |__ Port 4: Dev 3, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M

    

Answer 1

Com base na resposta de @hopeithelps, parece que os programas levam / dev / video0 para ser a webcam padrão. No meu sistema, / dev / video0 é inicialmente a câmera integrada, enquanto / dev / video1 aparece / desaparece automaticamente quando a webcam externa é conectada / desconectada.

Então, eu acabei de escrever um comando simples para definir / dev / video0 para apontar para a "melhor câmera disponível" - a webcam, se estiver presente, e a câmera integrada, do contrário. Atualmente, tenho que invocar este script manualmente depois de conectar / desconectar a webcam. No entanto, o microfone muda automaticamente para o "melhor microfone" porque eu segui esta resposta do askUbuntu .

Rant: Shouldn't Ubuntu have a unified approach to hot-plugging of display, camera, speaker, microphone (and also keyboard, mouse, MIDI, ...?). All these things seem to require separate tinkering. I think gnome-display-manager has the ideal design: it remembers my old settings when I plug in a display I've used before.

Aqui está o script:

#!/bin/bash
# Make default camera /dev/video0 point to the "best" camera present.

if [ -h /dev/video0 ]; then 
   sudo rm /dev/video0   # not first run: remove our old symlink
elif [ -e /dev/video0 ]; then
   sudo mv /dev/video0 /dev/video0.original   # first run: rename original video0
fi 
if [ -e /dev/video1 ]; then
   sudo ln -s /dev/video1 /dev/video0   # symlink to video1 since it exists
   echo "Set default camera /dev/video0 --> external camera /dev/video1"
elif [ -e /dev/video0.original ]; then  # symlink to video0.original otherwise
   sudo ln -s /dev/video0.original /dev/video0
   echo "Set default camera /dev/video0 --> integrated camera /dev/video0.original"
else
   echo "Sorry, does this machine have no camera devices?"
   ls -l /dev/video*
fi

Testado com guvcview e Google Hangouts, usando duas webcams diferentes da Logitech. Estou executando o Ubuntu 13.10 (na verdade Mint Petra) em um Thinkpad T530i.

Você pode ter que editar o script se sua webcam aparecer como / dev / video3 ou algo assim, como acontece para @hopeithelps. (Talvez eu devesse ter escolhido o dispositivo / dev / video * que possui o timestamp mais recente ...)

    

Answer 2

Eu não sei se é o melhor caminho, mas com a mesma webcam e problema que encontrei usando o comando sudo rm /dev/video0 remove minha webcam. Ele se foi até a reinicialização. Pode ser necessário que você use cd /dev e verifique se sua webcam é video0 my c920 é video3 .

    

Answer 3

Primeiro, você precisa instalar o aplicativo Seletor de sistemas de multimídia

sudo apt-get install gnome-media dpkg gconf-service gconf2 gstreamer0.10-gconf gstreamer0.10-plugins-base gstreamer0.10-plugins-good libatk1.0-0 libc6 libgconf-2-4 libglib2.0-0 libgnome-media-profiles-3.0-0 libgstreamer-plugins-base0.10-0 libgstreamer0.10-0 libgtk-3-0 x11-utils

Em seguida, abra-o e, na seção Video , você pode alterar a webcam padrão.

** Esta aplicação pode ser aberta com o Terminal executando:

sudo gstreamer-properties

    

Answer 4

Bem, este tipo de caiu morto na água. Não sei se devo postar outro tópico ou o quê. Estou simplesmente tentando fazer da minha webcam externa minha webcam padrão. Eu tenho Gstreamer instalado (foto) Eu tenho o seletor de sistemas multimídia instalado. Eu tenho configurações padrão no seletor de sistemas multimídia para definir em Webcam c920, e ainda quando eu abro video chat ou GUVC, ele abre a câmera do laptop. Eu tenho alguma ajuda sobre isso, e eu segui completamente. Mas ainda não consigo fazer funcionar. Alguém tem alguma ideia, ou devo postar em outro lugar? Obrigado

    

Answer 5

Eu acho que tenho uma solução. Eu não sei se você pode fazer com que a câmera do seu laptop funcione novamente, mas pelo menos eu consegui fazer um USB como padrão.

Eu fiz assim:

1. sudo rm /dev/video0
   Depois disso, não consegui iniciar o Camorama Webcam Viewer.
2. sudo chmod -R 777 /dev
   Isso lhe dá permissão para alterar nomes de arquivos
3. mv /dev/video1 /dev/video0
   Isso renomeia sua câmera usb para dev0

Depois disso, pude ver minha câmera USB automaticamente quando abri o Camorama Webcam Viewer. Espero que isso ajude.