Solved! I will later describe the solution I found for my problem, as I am now in a hurry. Paul On Thu, Apr 29, 2021 at 4:18 PM Paul Smith <phhs80@xxxxxxxxx> wrote: > > On Thu, Apr 29, 2021 at 4:12 PM Paul Smith <phhs80@xxxxxxxxx> wrote: > > > > On Thu, Apr 29, 2021 at 3:59 PM Jonathan Billings <billings@xxxxxxxxxx> wrote: > > > > > > > --------------------------- > > > > [ 263.923694] EDAC amd64: Node 0: DRAM ECC disabled. > > > > [ 265.686950] systemd-sysv-generator[37295]: SysV service > > > > '/etc/rc.d/init.d/livesys' lacks a native systemd unit file. > > > > Automatically generating a unit file for compatibility. Please update > > > > package to include a native systemd unit file, in order to make it > > > > more safe and robust. > > > > [ 265.686995] systemd-sysv-generator[37295]: SysV service > > > > '/etc/rc.d/init.d/livesys-late' lacks a native systemd unit file. > > > > Automatically generating a unit file for compatibility. Please update > > > > package to include a native systemd unit file, in order to make it > > > > more safe and robust. > > > > [ 366.970723] uvcvideo: Failed to query (SET_CUR) UVC control 10 on > > > > unit 2: -32 (exp. 2). > > > > [ 366.987741] uvcvideo: Failed to query (SET_CUR) UVC control 4 on > > > > unit 1: -32 (exp. 4). > > > > --------------------------- > > > > > > I don't see anything in particular wrong with that. The uvcvideo > > > output is probably for your real video device. > > > > > > Do you see the v4l2loopback device in v4l2-ctrl? For example, I > > > loaded the rpmfusion package 'akmod-v4l2loopback' and enabled the > > > akmods service, and now I see: > > > > > > $ v4l2-ctl --list-devices > > > OBS Virtual Camera (platform:v4l2loopback-000): > > > /dev/video0 > > > > Thanks, Jonathan. In my case, I get: > > > > $ v4l2-ctl --list-devices > > OBS Virtual Camera (platform:v4l2loopback-000): > > /dev/video0 > > > > EasyCamera 5M: EasyCamera 5M (usb-0000:01:00.0-7): > > /dev/video2 > > /dev/video3 > > $ > > This may be related: > > ------------------------------ > $ ffmpeg -i /dev/video2 -f v4l2 /dev/video4 > ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers > built with gcc 11 (GCC) > configuration: --prefix=/usr --bindir=/usr/bin > --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg > --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 > --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -flto=auto > -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall > -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 > -Wp,-D_GLIBCXX_ASSERTIONS > -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 > -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 > -m64 -mtune=generic -fasynchronous-unwind-tables > -fstack-clash-protection -fcf-protection' > --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now > -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags=' > -I/usr/include/rav1e' --enable-libopencore-amrnb > --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 > --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r > --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libaom > --enable-libdav1d --enable-libass --enable-libbluray --enable-libcdio > --enable-libdrm --enable-libjack --enable-libfreetype > --enable-libfribidi --enable-libgsm --enable-libmp3lame > --enable-libmysofa --enable-nvenc --enable-openal --enable-opencl > --enable-opengl --enable-libopenjpeg --enable-libopenmpt > --enable-libopus --enable-libpulse --enable-librsvg --enable-librav1e > --enable-libsmbclient --enable-version3 --enable-libsoxr > --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 > --enable-libtheora --enable-libvorbis --enable-libv4l2 > --enable-libvidstab --enable-libvmaf --enable-version3 > --enable-vapoursynth --enable-libvpx --enable-vulkan > --enable-libglslang --enable-libx264 --enable-libx265 --enable-libxvid > --enable-libxml2 --enable-libzimg --enable-libzvbi --enable-lv2 > --enable-avfilter --enable-avresample --enable-libmodplug > --enable-postproc --enable-pthreads --disable-static --enable-shared > --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 > --enable-lto --enable-libmfx --enable-runtime-cpudetect > libavutil 56. 70.100 / 56. 70.100 > libavcodec 58.134.100 / 58.134.100 > libavformat 58. 76.100 / 58. 76.100 > libavdevice 58. 13.100 / 58. 13.100 > libavfilter 7.110.100 / 7.110.100 > libavresample 4. 0. 0 / 4. 0. 0 > libswscale 5. 9.100 / 5. 9.100 > libswresample 3. 9.100 / 3. 9.100 > libpostproc 55. 9.100 / 55. 9.100 > Input #0, video4linux2,v4l2, from '/dev/video2': > Duration: N/A, start: 7710.349826, bitrate: 110592 kb/s > Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x360, > 110592 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc > Stream mapping: > Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native)) > Press [q] to stop, [?] for help > [video4linux2,v4l2 @ 0x55c856f6b040] Unable to open V4L2 device '/dev/video4' > Could not write header for output file #0 (incorrect codec parameters > ?): No such file or directory > Error initializing output stream 0:0 -- > Conversion failed! > $ > ------------------------------ > > Paul _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
