I have a mobius camera (http://dashboardcamerareviews.com/mobius-action-camera-review), which works perfectly with cheese and camorama. Guvcview fails with: root@lynx:/root(1)# guvcview --verbosity=2 GUVCVIEW: language catalog=> dir:/usr/share/locale type:en_US.UTF-8 cat:guvcview.mo GUVCVIEW: main thread (tid: 8888) V4L2_CORE: Device Node Path: /dev/video0 VID/PID: 0603 1002 C-DUTEK Mobius serial: (null) busnum: 2 devnum: 7 V4L2_CORE: language catalog=> dir:/usr/share/locale type:en_US.UTF-8 cat:gview_v4l2core.mo V4L2_CORE: capture method mmap (1) V4L2_CORE: video device: /dev/video0 V4L2_CORE: mapping control for Pan (relative) V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Tilt (relative) V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Pan Reset V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Tilt Reset V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Focus V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for LED1 Mode V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for LED1 Frequency V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Disable video processing V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: mapping control for Raw bits per pixel V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory V4L2_CORE: Init. Mobius (location: usb-0000:00:1d.7-1) { pixelformat = 'MJPG', description = 'MJPEG' } { discrete: width = 1280, height = 720 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 640, height = 480 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 320, height = 240 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { pixelformat = 'RGB3', description = 'RGB3' } { discrete: width = 1280, height = 720 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 640, height = 480 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 320, height = 240 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { pixelformat = 'BGR3', description = 'BGR3' } { discrete: width = 1280, height = 720 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 640, height = 480 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 320, height = 240 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { pixelformat = 'YU12', description = 'YU12' } { discrete: width = 1280, height = 720 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 640, height = 480 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 320, height = 240 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { pixelformat = 'YV12', description = 'YV12' } { discrete: width = 1280, height = 720 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 640, height = 480 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, { discrete: width = 320, height = 240 } Time interval between frame: {min { 1/30 } .. max { 1/30 } / stepsize { 1/10000000 } }, V4L2_CORE: checking muxed H264 format support V4L2_CORE: (libusb) checking for H264 unit id V4L2_CORE: Control 0x80000000 failed to query with error -1 buggy V4L2_CTRL_FLAG_NEXT_CTRL flag implementation (workaround enabled) guvcview: v4l2_controls.c:248: print_control_list: Assertion `vd->list_device_controls != ((void *)0)' failed. Aborted root@lynx:/root(2)# emerge --info guvcview Portage 2.2.18 (python 2.7.9-final-0, default/linux/amd64/13.0/desktop, gcc-4.9.2, glibc-2.20-r2, 3.19.1-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.19.1-gentoo-x86_64-Intel-R-_Core-TM-2_Duo_CPU_T9500_@_2.60GHz-with-gentoo-2.2 KiB Mem: 8100304 total, 3461668 free KiB Swap: 12582908 total, 12582908 free Timestamp of repository gentoo: Fri, 13 Mar 2015 06:30:01 +0000 sh bash 4.3_p33-r2 ld GNU ld (Gentoo 2.25 p1.0) 2.25 distcc[8960] (dcc_trace_version) distcc 3.2rc1 x86_64-pc-linux-gnu; built Feb 28 2015 11:00:31 [disabled] app-shells/bash: 4.3_p33-r2::gentoo dev-java/java-config: 2.2.0::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.9-r2::gentoo, 3.3.5-r1::gentoo, 3.4.3::gentoo dev-util/cmake: 3.1.0::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.13.11::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.9.6-r4::gentoo, 1.10.3-r1::gentoo, 1.11.6-r1::gentoo, 1.12.6::gentoo, 1.14.1::gentoo, 1.15::gentoo sys-devel/binutils: 2.25::gentoo sys-devel/gcc: 4.9.2::gentoo sys-devel/gcc-config: 1.8::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.19::gentoo (virtual/os-headers) sys-libs/glibc: 2.20-r2::gentoo Repositories: gentoo location: /usr/portage_lynx sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sage-on-gentoo location: /var/lib/layman/sage-on-gentoo masters: gentoo priority: 0 science location: /var/lib/layman/science masters: gentoo priority: 1 sunrise location: /var/lib/layman/sunrise masters: gentoo priority: 2 ago location: /var/lib/layman/ago masters: gentoo priority: 3 tlp location: /var/lib/layman/tlp masters: gentoo priority: 4 x11 location: /var/lib/layman/x11 masters: gentoo priority: 5 local location: /usr/local/portage masters: gentoo priority: 6 g-cpan location: /var/lib/cpan masters: gentoo priority: 7 g-octave location: /var/lib/g-octave masters: gentoo priority: 8 Installed sets: @system ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA PUEL Intel-SDP dlj-1.1 skype-eula skype-4.0.0.7-copyright googleearth AdobeFlash-11.x cadsoft Oracle-BCLA-JavaSE MakeMKV-EULA NVIDIA-CUDA Nero-AAC-EULA GIMPS" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.6/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cli-php5.6/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=native -O2 -pipe" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo ftp://ftp.tu-clausthal.de/pub/linux/gentoo ftp://ftp.easynet.nl/mirror/gentoo/ " LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" USE="64bit R X Xaw3d a52 aac acl acpi admin afs alsa amd64 ao apache2 apng applet archive armadillo arpack asf aspell assistant atlas audacious audiofile automap automount bash-completion berkdb blas blast bluetooth bluray boost branding bzip2 cairo cdda cddb cdf cdio cdparanoia cdr cg cgi chm cli cmake consolekit cracklib crypt css cups curl cxx daap db dbi dbm dbus declarative designer devhelp device-mapper dga dia dirac djvu doc dot dri ds2490 ds9097 ds9097u dts dv dvb dvd dvdr dvi dynamicplugin eds egl elf emacs emboss emf encode epiphany evo examples excel exif expat extensions extra extras faac faad fam ffmpeg fftw firefox fits flac fltk fontconfig foomaticdb fortran fortran95 fpm fpx fuse g3dvl garmin gcj gd gdal gdbm gdu gedit geoip geolocation geos gfortran gif gimp git glade glamor glib glpk gml gmp gnome gnome-keyring gnome-print gnuplot gnutls gold gphoto2 gpm grammar graphics graphtft graphviz grass gsl gsm gstreamer gtk gtk3 gudev guile hdaps hddtemp hdf hdf5 hdri html http httpd hvm hwdb iconv icq icu id3tag ide imagemagick imap inotify introspection ipod ipv6 irda ithreads jabber jadetex java java6 jbig jit john jpeg jpeg2k kate kde kdepim kdrive kerberos keymap kpathsea kvm ladspa lame lapack laptop latex lcms ldap lensfun libffi libgda libkms libnotify libsamplerate lirc live lua lzma lzo mad mail maildir mapnik math matroska media-library mercurial mikmod mkl mmx mmxext mng mod modules mono motif mozilla mp3 mp4 mpeg mpi mplayer mtp multilib multimedia musepack musicbrainz mysql mysqli nautilus ncurses neXt netcdf netpbm network networking nfs nls nntp nptl nsplugin ntfs ntp numpy obex objc ocaml ocr octave odbc ofa ogdi ogg openexr opengl openmp openvg pam pango pcre pda pdf pdl2 perl plasma plotutils plugins png podcast policykit portaudio posix postgres postscript ppds preview-latex proj projectm pstricks pulseaudio python python-bindings q16 q32 qemu qhull qt3support qt4 qt5 quicktime raw readline reiserfs reports rle romio rpc rrdcgi rrdtool sage samba sasl schroedinger science sdk sdl secure-delete semantic-desktop server session shout sip slang slp smart smbclient smp sms sndfile snmp soap sockets sound soup sox speex spell sql sqlite sse sse2 sse3 sse4 sse4_1 ssl ssse3 startup-notification stlport subtitles subversion sudo suexec svg svm swig systemd szip t1lib tcl tcpd tex tex4ht texmacs theora thesaurus thinkpad threads thunderbird tidy tiff tk tools truetype udev udisks unicode upower usb utempter v4l v4l2 vaapi vala valgrind vdpau video virt-network virtualbox visio vorbis vpx vtk wav webdav webdav-serf webkit wifi wmf wxwidgets x264 xa xattr xcb xetex xext xft xine xml xmlreader xmlrpc xpm xv xvid xvmc yaml youtube zlib zvbi" ABI_X86="64" ALSA_CARDS="intel8x0" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_core authn_dbm authn_default authn_file authz_core authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgid dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info lbmethod_byrequests log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif slotmem_shm so socache_shmcb speling status unique_id unixd userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="canon fuji ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog sensors thermal" CPU_FLAGS_X86="mmx mmxext sse sse2 sse3 sse4_1 ssse3" CURL_SSL="nss" DRACUT_MODULES="caps lvm syslog" DVB_CARDS="usb-wt220u" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev synaptics void" KERNEL="linux" LCD_DEVICES="cfontz hd44780 mtxorb ncurses X lcd2usb lcdlinux png usblcd" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de fr ru" NETBEANS_MODULES="apisupport cnd dlight enterprise ergonomics groovy gsf harness ide identity j2ee java mobility nb php profiler websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="arm i386 x86_64" QEMU_USER_TARGETS="arm i386 x86_64" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="nouveau displaylink" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON ================================================================= Package Settings ================================================================= media-video/guvcview-2.0.1::local was built with the following: USE="gsl pulseaudio" ABI_X86="64"
I just saw, that guvcview was installation from my local overview. I now reinstalled guvcview from the standard portage tree. But the new guvcview fails with the same error.
I added also a bug report at https://sourceforge.net/p/guvcview/tickets/20/
this should be fixed in 2.0.3