기본 웹캠을 변경하는 방법? 작동하지 않는 Multimedia selctor에서 dfault 변경

Logitech c920을 설정했습니다. AskUbuntu 사용자의 도움으로 GUVCview, Video4 Linux 제어판 및 QT V4L2 유틸리티 테스터를 여기에 설치했습니다. GUVCview를 사용하여 Toshiba의 내장 웹캠에서 외부 웹캠으로 변경할 수 있습니다.

그러나 Google 행 아웃에서 화상 채팅을 시작하면 내장 노트북 카메라가 기본으로 자동 선택됩니다. 항상 외부 카메라를 사용하도록 기본 설정을 변경하고 싶지만이 옵션이있는 곳을 찾을 수 없습니다. Toshiba Satellite L755에서 Windows 7 및 Ubuntu 12.04 LTS를 실행하고 있습니다

메모리 : 3.8 Gib

프로세서 : 인텔 ® 코어 ™ i5-2410M CPU @ 2.30GHz × 4

그래픽 : Intel® Sandybridge Mobile

OS 유형 64 비트

디스크 : 40.2GB

편집 : Gstreamer-properties터미널에서 시도 하고 비디오의 기본 입력을 Logitech 외부 캠으로 변경했습니다. 아직 운이 없다. "테스트"를하면 사진이 나타나지 않고 GUVC를 열면 랩탑 캠이 계속 나타납니다.

두 번째 편집 : 터미널에 멀티 미디어 선택기를 설치 한 후에도 여전히 Dash에서 찾을 수 없었습니다. 다음은 명령 실행 후 판독 값입니다.

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.

Gstreamer-properties터미널에서 실행 하면 멀티미디어 선택기가 나타납니다. 기본 입력을 외부로 변경하면 외부 캠의 파란색 표시등이 켜집니다 ( "test"를 누르면). 다음은 설정 스크린 샷입니다.

세 번째 편집 : 루트로 실행 한 후 sudo gstreamer-properties기본 입력을 HD 웹캠 (이전 스크린 샷과 동일한 설정)으로 변경하고 GUVC를 열면 노트북 카메라로 열립니다. SUDO를 실행 한 후 판독 값은 다음과 같습니다.

(gstreamer-properties:15236): Gtk-WARNING **: Unknown property: GtkDialog.has-separator

(gstreamer-properties:15236): Gtk-WARNING **: Unknown property: GtkDialog.has-separator
gstreamer-properties-Message: Skipping unavailable plugin 'artsdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'esdsink'
gstreamer-properties-Message: Skipping unavailable plugin 'sunaudiosink'
gstreamer-properties-Message: Skipping unavailable plugin 'glimagesink'
gstreamer-properties-Message: Skipping unavailable plugin 'sdlvideosink'
gstreamer-properties-Message: Skipping unavailable plugin 'v4lmjpegsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'qcamsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'v4lsrc'
gstreamer-properties-Message: Skipping unavailable plugin 'esdmon'
gstreamer-properties-Message: Skipping unavailable plugin 'sunaudiosrc'

터미널을 닫으려고 할 때 프로세스가 여전히 사용 중이라고 말했습니다.

다음 날 4 차 편집 :

나는 Dumindu의 아래 링크를 따라 갔다.

sudo apt-get install gstreamer-dbus-media-service gstreamer-tools gstreamer0.10-alsa gstreamer0.10-buzztard gstreamer0.10-buzztard-doc gstreamer0.10-crystalhd gstreamer0.10-doc gstreamer0.10-ffmpeg gstreamer0.10-ffmpeg-dbg gstreamer0.10-fluendo-mp3 gstreamer0.10-gconf gstreamer0.10-gnomevfs gstreamer0.10-gnonlin gstreamer0.10-gnonlin-dbg gstreamer0.10-gnonlin-doc gstreamer0.10-hplugins gstreamer0.10-nice gstreamer0.10-packagekit gstreamer0.10-plugins-bad gstreamer0.10-plugins-bad-doc gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-plugins-base-dbg gstreamer0.10-plugins-base-doc gstreamer0.10-plugins-cutter gstreamer0.10-plugins-good gstreamer0.10-plugins-good-doc gstreamer0.10-plugins-ugly gstreamer0.10-plugins-ugly-doc gstreamer0.10-pocketsphinx gstreamer0.10-pulseaudio gstreamer0.10-qapt gstreamer0.10-sdl gstreamer0.10-tools gstreamer0.10-vaapi gstreamer0.10-vaapi-doc gstreamer0.10-x

터미널을 통해 실행했습니다. 몇 분 후 스크립트가 완료되었으며 오류나 오류가 발생하지 않았습니다 (아래에 사본을 넣겠습니다). 그러나 그런 다음 실행했을 때 sudo gstreamer-properties위와 같은 "사용할 수없는 플러그인 건너 뛰기"메시지가 나타납니다 ^. 멀티미디어 시스템 선택기의 기본 입력은 c920 HD 캠으로 설정되어 있지만 방금 GUVC를 열고 랩톱 카메라를 엽니 다. 다음에 읽은 내용이 있습니다 sudo apt get install.... 너무 많은 캐릭터가 게시 할 수 없습니다. 여기 반이 있습니다 :

ad-multiverse_0.10.21-1_amd64.deb) ...
Selecting previously unselected package gstreamer0.10-plugins-good-doc.
Unpacking gstreamer0.10-plugins-good-doc (from .../gstreamer0.10-plugins-good-doc_0.10.31-1ubuntu1.2_all.deb) ...
Selecting previously unselected package gstreamer0.10-plugins-ugly-doc.
Unpacking gstreamer0.10-plugins-ugly-doc (from .../gstreamer0.10-plugins-ugly-doc_0.10.18.3-1ubuntu1_all.deb) ...
Selecting previously unselected package libsphinxbase1.
Unpacking libsphinxbase1 (from .../libsphinxbase1_0.4.1-0ubuntu4_amd64.deb) ...
Selecting previously unselected package libpocketsphinx1.
Unpacking libpocketsphinx1 (from .../libpocketsphinx1_0.5.1+dfsg1-0ubuntu3_amd64.deb) ...
Selecting previously unselected package gstreamer0.10-pocketsphinx.
Unpacking gstreamer0.10-pocketsphinx (from .../gstreamer0.10-pocketsphinx_0.5.1+dfsg1-0ubuntu3_amd64.deb) ...
Selecting previously unselected package libattica0.3.
Unpacking libattica0.3 (from .../libattica0.3_0.3.0-0ubuntu2_amd64.deb) ...
Selecting previously unselected package libdlrestrictions1.
Unpacking libdlrestrictions1 (from .../libdlrestrictions1_0.14.2ubuntu5_amd64.deb) ...
Selecting previously unselected package libkdecore5.
Unpacking libkdecore5 (from .../libkdecore5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkdeui5.
Unpacking libkdeui5 (from .../libkdeui5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkcmutils4.
Unpacking libkcmutils4 (from .../libkcmutils4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkdeclarative5.
Unpacking libkdeclarative5 (from .../libkdeclarative5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkpty4.
Unpacking libkpty4 (from .../libkpty4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkdesu5.
Unpacking libkdesu5 (from .../libkdesu5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libclucene0ldbl.
Unpacking libclucene0ldbl (from .../libclucene0ldbl_0.9.21b-2_amd64.deb) ...
Selecting previously unselected package virtuoso-opensource-6.1-common.
Unpacking virtuoso-opensource-6.1-common (from .../virtuoso-opensource-6.1-common_6.1.4+dfsg1-0ubuntu1_amd64.deb) ...
Selecting previously unselected package libvirtodbc0.
Unpacking libvirtodbc0 (from .../libvirtodbc0_6.1.4+dfsg1-0ubuntu1_amd64.deb) ...
Selecting previously unselected package soprano-daemon.
Unpacking soprano-daemon (from .../soprano-daemon_2.7.5+dfsg.1-0ubuntu1_amd64.deb) ...
Selecting previously unselected package libsoprano4.
Unpacking libsoprano4 (from .../libsoprano4_2.7.5+dfsg.1-0ubuntu1_amd64.deb) ...
Selecting previously unselected package libnepomuk4.
Unpacking libnepomuk4 (from .../libnepomuk4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libsolid4.
Unpacking libsolid4 (from .../libsolid4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libstreams0.
Unpacking libstreams0 (from .../libstreams0_0.7.7-1.1ubuntu3_amd64.deb) ...
Selecting previously unselected package libstreamanalyzer0.
Unpacking libstreamanalyzer0 (from .../libstreamanalyzer0_0.7.7-1.1ubuntu3_amd64.deb) ...
Selecting previously unselected package libkio5.
Unpacking libkio5 (from .../libkio5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libnepomukquery4a.
Unpacking libnepomukquery4a (from .../libnepomukquery4a_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libnepomukutils4.
Unpacking libnepomukutils4 (from .../libnepomukutils4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkparts4.
Unpacking libkparts4 (from .../libkparts4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkdewebkit5.
Unpacking libkdewebkit5 (from .../libkdewebkit5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkdnssd4.
Unpacking libkdnssd4 (from .../libkdnssd4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkemoticons4.
Unpacking libkemoticons4 (from .../libkemoticons4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkfile4.
Unpacking libkfile4 (from .../libkfile4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkjsapi4.
Unpacking libkjsapi4 (from .../libkjsapi4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libktexteditor4.
Unpacking libktexteditor4 (from .../libktexteditor4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkhtml5.
Unpacking libkhtml5 (from .../libkhtml5_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkidletime4.
Unpacking libkidletime4 (from .../libkidletime4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkmediaplayer4.
Unpacking libkmediaplayer4 (from .../libkmediaplayer4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libknewstuff3-4.
Unpacking libknewstuff3-4 (from .../libknewstuff3-4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libknotifyconfig4.
Unpacking libknotifyconfig4 (from .../libknotifyconfig4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libnepomukdatamanagement4.
Unpacking libnepomukdatamanagement4 (from .../libnepomukdatamanagement4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libnepomuksync4.
Unpacking libnepomuksync4 (from .../libnepomuksync4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package ntrack-module-libnl-0.
Unpacking ntrack-module-libnl-0 (from .../ntrack-module-libnl-0_016-1ubuntu1_amd64.deb) ...
Selecting previously unselected package libntrack0.
Unpacking libntrack0 (from .../libntrack0_016-1ubuntu1_amd64.deb) ...
Selecting previously unselected package libntrack-qt4-1.
Unpacking libntrack-qt4-1 (from .../libntrack-qt4-1_016-1ubuntu1_amd64.deb) ...
Selecting previously unselected package libqca2.
Unpacking libqca2 (from .../libqca2_2.0.3-2_amd64.deb) ...
Selecting previously unselected package libthreadweaver4.
Unpacking libthreadweaver4 (from .../libthreadweaver4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libplasma3.
Unpacking libplasma3 (from .../libplasma3_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package phonon.
Unpacking phonon (from .../phonon_4%3a4.7.0really4.6.0-0ubuntu1_amd64.deb) ...
Selecting previously unselected package kde-runtime-data.
Unpacking kde-runtime-data (from .../kde-runtime-data_4%3a4.8.5-0ubuntu0.2_all.deb) ...
Selecting previously unselected package libkde3support4.
Unpacking libkde3support4 (from .../libkde3support4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkjsembed4.
Unpacking libkjsembed4 (from .../libkjsembed4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkntlm4.
Unpacking libkntlm4 (from .../libkntlm4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libkrosscore4.
Unpacking libkrosscore4 (from .../libkrosscore4_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package libpolkit-qt-1-1.
Unpacking libpolkit-qt-1-1 (from .../libpolkit-qt-1-1_0.103.0-1_amd64.deb) ...
Selecting previously unselected package kdelibs5-data.
Unpacking kdelibs5-data (from .../kdelibs5-data_4%3a4.8.5-0ubuntu0.2_all.deb) ...
Selecting previously unselected package libxml2-utils.
Unpacking libxml2-utils (from .../libxml2-utils_2.7.8.dfsg-5.1ubuntu4.6_amd64.deb) ...
Selecting previously unselected package kdoctools.
Unpacking kdoctools (from .../kdoctools_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package kdelibs-bin.
Unpacking kdelibs-bin (from .../kdelibs-bin_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package kate-data.
Unpacking kate-data (from .../kate-data_4%3a4.8.5-0ubuntu0.1_all.deb) ...
Selecting previously unselected package libkatepartinterfaces4.
Unpacking libkatepartinterfaces4 (from .../libkatepartinterfaces4_4%3a4.8.5-0ubuntu0.1_amd64.deb) ...
Selecting previously unselected package katepart.
Unpacking katepart (from .../katepart_4%3a4.8.5-0ubuntu0.1_amd64.deb) ...
Selecting previously unselected package kdelibs5-plugins.
Unpacking kdelibs5-plugins (from .../kdelibs5-plugins_4%3a4.8.5-0ubuntu0.2_amd64.deb) ...
Selecting previously unselected package oxygen-icon-theme.
Unpacking oxygen-icon-theme (from .../oxygen-icon-theme_4%3a4.8.3-0ubuntu0.1_all.deb) ...
Selecting previously unselected package shared-desktop-ontologies.
Unpacking shared-desktop-ontologies (from .../shared-desktop-ontologies_0.8.1-1_all.deb) ...

Gstreamer가 설치되어 있는지 확인하기 위해 Ubuntu Software Center에서 다시 확인하고 싶었습니다.

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

@hopeithelps의 답변을 바탕으로 프로그램은 / dev / video0을 기본 웹캠으로 사용합니다. 내 시스템에서 / dev / video0은 처음에 통합 카메라이며, 외부 웹캠을 연결 / 분리하면 / dev / video1이 자동으로 표시되거나 사라집니다.

그래서 방금 / dev / video0을 "가장 사용 가능한 카메라"(카메라가 있으면 웹캠, 그렇지 않으면 내장 카메라)를 가리 키도록 설정 하는 간단한 명령 을 작성했습니다 . 현재 웹캠을 연결 / 연결 해제 한 후이 스크립트를 수동으로 호출해야합니다. 그러나이 askUbuntu answer에 따라 마이크가 자동으로 "최상의 마이크"로 전환됩니다 .

Rant : Ubuntu가 디스플레이, 카메라, 스피커, 마이크 (및 키보드, 마우스, MIDI 등의 핫 플러그)에 통일 된 접근 방식을 가져서는 안됩니다. 이 모든 것은 별도의 땜질이 필요한 것 같습니다. gnome-display-manager는 이상적인 디자인을 가지고 있다고 생각합니다. 이전에 사용한 디스플레이를 연결할 때 이전 설정을 기억합니다.

스크립트는 다음과 같습니다.

#!/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

두 개의 서로 다른 로지텍 웹캠을 사용하여 guvcview 및 Google 행 아웃에서 테스트했습니다. Thinkpad T530i에서 Ubuntu 13.10 (실제로 Mint Petra)을 실행하고 있습니다.

웹캠이 / hope / video3 또는 @hopeithelps에서와 같이 / dev / video3으로 표시되면 스크립트를 편집해야 할 수도 있습니다. (아마도 가장 최근의 타임 스탬프가있는 / dev / video * 장치를 선택해야했을 것입니다 ...)

가장 좋은 방법인지는 모르겠지만 동일한 웹캠과 문제로 명령을 사용하여 sudo rm /dev/video0웹캠을 제거했습니다. 재부팅 할 때까지 사라졌습니다. 당신은 할 수 있습니다 cd /dev있는지 웹캠이되어 있는지 확인 video0내 C920입니다 video3.

먼저 당신은 응용 프로그램 멀티미디어 시스템 선택기 를 설치해야합니다

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

그런 다음 열면 해당 Video섹션에서 기본 웹캠을 변경할 수 있습니다.

**이 응용 프로그램은 다음을 실행하여 터미널에서 열 수 있습니다.

sudo gstreamer-properties

이런 종류의 물에서 물에 빠졌습니다. 다른 스레드를 게시 해야하는지 또는 무엇을 게시해야하는지 모르겠습니다. 외부 웹캠을 기본 웹캠으로 만들려고합니다. Gstreamer가 설치되어 있습니다 (사진). 멀티미디어 시스템 선택기가 설치되어 있습니다. 웹캠 c920에서 설정할 멀티미디어 시스템 선택기의 기본 설정이 있지만 화상 채팅이나 GUVC를 열면 랩탑 캠이 열립니다. 나는 이것에 대한 도움을 받았으며, 따라 갔다. 그러나 여전히 작동하지 않는 것 같습니다. 누구든지 아이디어가 있습니까, 아니면 다른 곳에 게시해야합니까? 감사

나는 해결책이 있다고 생각한다. 랩톱의 카메라를 다시 작동시킬 수 있는지 모르겠지만 적어도 기본적으로 USB를 만들 수있었습니다.

나는 이렇게했다 :

1. sudo rm /dev/video0
   이 후 나는 Camorama Webcam Viewer를 전혀 시작할 수 없었습니다.
2. sudo chmod -R 777 /dev
   파일 이름을 변경할 수있는 권한을 부여합니다
3. mv /dev/video1 /dev/video0
   이것은 USB 카메라의 이름을 dev0으로 바꿉니다.

그 후 Camorama Webcam Viewer를 열 때 USB 카메라를 자동으로 볼 수있었습니다. 이게 도움이 되길 바란다.