Re: Webcam support on Lenovo Thinkpad T14 Gen3 (Intel)

unfortunately, yes the slider is well opened and I can confirm that when it is closed no LED will be visible.

Thanks

Morgan


7 octobre 2023 15:06 "Peter Hessler" <phessler@theapt.org> a écrit:

> A lot of the Thinkpad laptops have a physical switch that will
> cover/uncover the camera. Can you switch it to the other and try again?
>
> -peter
>
> On 2023 Oct 07 (Sat) at 12:53:12 +0000 (+0000), Comète wrote:
> :Hi,
> :
> :$ video -f /dev/video0
> :video: ioctl VIDIOC_DQBUF: Invalid argument
> :
> :the LED lights up near the camera and a black window is displayed...
> :
> :
> :I've strictly followed https://www.openbsd.org/faq/faq13.html#webcam
> :
> :
> :then to answer Crystal:
> :
> :$ ffplay -f v4l2 -input_format yuyv422 -video_size 960x540 -i /dev/video0
> :ffplay version 4.4.3 Copyright (c) 2003-2022 the FFmpeg developers
> :built with OpenBSD clang version 13.0.0
> :configuration: --enable-shared --arch=amd64 --cc=cc --enable-debug --disable-stripping
> :--disable-indev=jack --disable-outdev=sdl2 --enable-fontconfig --enable-frei0r --ena
> :ble-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libdav1d --enable-libfreetype
> :--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-libopus --ena
> :ble-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx
> :--enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --en
> :able-nonfree --enable-openssl --enable-libvidstab --extra-cflags='-I/usr/local/include
> :-I/usr/X11R6/include' --extra-libs='-L/usr/local/lib -L/usr/X11R6/lib' --extra-ldsofla
> :gs= --mandir=/usr/local/man --objcc=/usr/bin/false --optflags='-O2 -pipe -g -Wno-redundant-decls'
> :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
> :libswscale 5. 9.100 / 5. 9.100
> :libswresample 3. 9.100 / 3. 9.100
> :libpostproc 55. 9.100 / 55. 9.100
> :[video4linux2,v4l2 @ 0x68aa563e800] ioctl(VIDIOC_DQBUF): Invalid argument
> :Input #0, video4linux2,v4l2, from '/dev/video0':
> :Duration: N/A, bitrate: 124416 kb/s
> :Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 960x540, 124416 kb/s, 15 fps, 15 tbr,
> :1000k tbn, 1000k tbc
> :[video4linux2,v4l2 @ 0x68aa563e800] ioctl(VIDIOC_DQBUF): Invalid argument
> :[video4linux2,v4l2 @ 0x68aa563e800] ioctl(VIDIOC_DQBUF): Invalid argument
> :[video4linux2,v4l2 @ 0x68aa563e800] ioctl(VIDIOC_DQBUF): Invalid argument
> :
> :
> :and yes, to answer Jan:
> :
> :$ sysctl kern.video
> :kern.video.record=1
> :
> :
> :
> :Thanks a lot for your help.
> :
> :Morgan
> :
> :
> :7 octobre 2023 14:36 "Thomas Frohwein" <tfrohwein@fastmail.com> a écrit:
> :
> :> On Sat, Oct 07, 2023 at 07:08:21AM -0300, Crystal Kolipe wrote:
> :>
> :>> On Sat, Oct 07, 2023 at 08:51:36AM +0000, Comte wrote:
> :>> The webcam seems well detected but no image is displayed...
> :>>
> :>> What happens if you run /usr/X11R6/bin/video instead of using ffmpeg?
> :>>
> :>> # dmesg | grep "uvideo"
> :>> ^^^^^^^^^^^^^
> :>>
> :>> Please post a full dmesg next time.
> :>>
> :>> uvideo0 at uhub1 port 4 configuration 1 interface 0 "Chicony Electronics Co.,Ltd. Integrated
> :>> Camera" rev 2.01/54.20 addr 3
> :>> video0 at uvideo0
> :>> uvideo1 at uhub1 port 4 configuration 1 interface 2 "Chicony Electronics Co.,Ltd. Integrated
> :>> Camera" rev 2.01/54.20 addr 3
> :>> video1 at uvideo1
> :>>
> :>> However, this camera should almost certainly just work anyway.
> :>>
> :>> $ ffplay -f v4l2 -input_format mjpeg -video_size 1280x720 -i /dev/video0
> :>> ^^^^^^^^^^^^^^^^^^^
> :>>
> :>> Why?
> :>
> :> Looks like Comte followed the console instructions at [1] to the letter.
> :> It seems to me that jumping right to ffplay recording isn't the best
> :> way for you to check the camera is working. Simplest way to test seems
> :> to me:
> :>
> :> $ video -f /dev/video0
> :>
> :> And then you should see a window with the video stream...
> :>
> :> [1] https://www.openbsd.org/faq/faq13.html#webcam
> :
>
> --
> Do you realize how many holes there could be if people would just take
> the time to take the dirt out of them?