Hi,
my Rock5 finally arrived today. I’m currently testing with the Ubuntu Focal server image. I’ve got an HDMI device attached to the HDMI in and would like to capture the video input from that through video4linux2 with ffmpeg. Sadly I’m getting this error message. Any pointers?
rock@rock-5b:~$ sudo ffprobe -f v4l2 -i /dev/video0
ffprobe version 4.2.7-0ubuntu0.1 Copyright (c) 2007-2022 the FFmpeg developers
built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --arch=arm64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
[video4linux2,v4l2 @ 0x55a5f69030] Not a video capture device.
/dev/video0: No such device
rock@rock-5b:~$ v4l2-ctl -d /dev/video0 --get-fmt-video
Format Video Capture Multiplanar:
Width/Height : 1920/1080
Pixel Format : 'BGR3' (24-bit BGR 8-8-8)
Field : None
Number of planes : 1
Flags : premultiplied-alpha, 0x000000fe
Colorspace : Unknown (0x101c97f8)
Transfer Function : Default
YCbCr/HSV Encoding: Unknown (0x000000ff)
Quantization : Default
Plane 0 :
Bytes per Line : 5760
Size Image : 6220800
rock@rock-5b:~$ v4l2-ctl -d /dev/video0 --get-dv-timings
DV timings:
Active width: 1920
Active height: 1080
Total width: 2748
Total height: 1125
Frame format: progressive
Polarities: -vsync -hsync
Pixelclock: 148496000 Hz (48.03 frames per second)
Horizontal frontporch: 104
Horizontal sync: 56
Horizontal backporch: 668
Vertical frontporch: 4
Vertical sync: 5
Vertical backporch: 36
Standards:
Flags:
rock@rock-5b:~$ uname -a
Linux rock-5b 5.10.66-27-rockchip-gea60d388902d #rockchip SMP Mon Oct 24 08:25:47 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux
rock@rock-5b:~$ cat /etc/*release*
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.5 LTS"
NAME="Ubuntu"
VERSION="20.04.5 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.5 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
rock@rock-5b:~$