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  • Can a USB camera drive a display directly with no X/Wayland GUI?

    From Chris Green@21:1/5 to All on Sun Jul 20 12:01:34 2025
    As per the subject I want to use a USB camera with a SA15 Pi and have
    it drive a display (HDMI presumably) directly. The Pi I'm aiming to
    use just has the Lite version of the OS so there's no desktop/GUI
    available, just the command line.

    Is this possible?

    --
    Chris Green
    ·

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Computer Nerd Kev@21:1/5 to Chris Green on Mon Jul 21 09:14:30 2025
    Chris Green <cl@isbd.net> wrote:
    As per the subject I want to use a USB camera with a SA15 Pi

    SA15 Pi? I haven't heard of that one.

    and have
    it drive a display (HDMI presumably) directly. The Pi I'm aiming to
    use just has the Lite version of the OS so there's no desktop/GUI
    available, just the command line.

    Is this possible?

    Mplayer supports output to fbdev, which should work for that if
    HDMI works for displaying the Linux terminal command line over
    HDMI on your "SA15 Pi":
    http://mplayerhq.hu/DOCS/HTML/en/fbdev.html

    I'm not sure about Ffplay, the man page only describes using fbdev
    for input, not output.

    --
    __ __
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    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Lawrence D'Oliveiro@21:1/5 to Computer Nerd Kev on Sun Jul 20 23:44:51 2025
    On 21 Jul 2025 09:14:30 +1000, Computer Nerd Kev wrote:

    I'm not sure about Ffplay ...

    ldo@theon:~> ffplay -devices

    ... configuration/version details snipped ...

    Devices:
    D. = Demuxing supported
    .E = Muxing supported
    ---
    DE alsa ALSA audio output
    E caca caca (color ASCII art) output device
    DE fbdev Linux framebuffer
    D kmsgrab KMS screen capture
    D lavfi Libavfilter virtual input device
    DE oss OSS (Open Sound System) playback
    E sdl,sdl2 SDL2 output device
    DE sndio sndio audio playback
    DE video4linux2,v4l2 Video4Linux2 output device
    D x11grab X11 screen capture, using XCB
    E xv XV (XVideo) output device

    So certainly possible, with the right build options.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Chris Green@21:1/5 to Computer Nerd Kev on Mon Jul 21 07:49:14 2025
    Computer Nerd Kev <not@telling.you.invalid> wrote:
    Chris Green <cl@isbd.net> wrote:
    As per the subject I want to use a USB camera with a SA15 Pi

    SA15 Pi? I haven't heard of that one.

    :-) it was an inadvertent paste that I didn't notice!

    and have
    it drive a display (HDMI presumably) directly. The Pi I'm aiming to
    use just has the Lite version of the OS so there's no desktop/GUI available, just the command line.

    Is this possible?

    Mplayer supports output to fbdev, which should work for that if
    HDMI works for displaying the Linux terminal command line over
    HDMI on your "SA15 Pi":
    http://mplayerhq.hu/DOCS/HTML/en/fbdev.html

    I'm not sure about Ffplay, the man page only describes using fbdev
    for input, not output.

    --
    __ __
    #_ < |\| |< _#

    --
    Chris Green
    ·

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)