robertoj

I thought that v4l2request was exclusively in this github project and branch: https://github.com/philipl/mpv/tree/v4l2request Which github project and branch/release are you trying? I successfully compiled and installed the mpv from https://github.com/philipl/mpv/tree/v4l2request I made the /etc/mpv.conf as per the original post Result: 50% cpu in 4 cores, about half dropped frames: I don't see any mention of hwdec=drm in the mpv log I used the libplacebo from Trixie, not compiled on my own... I can try that next. <- final update for this post: libplacebo downloaded and built by myself did not help... but now I will try mpv 0.3.9

Ok the problem is that I didn't download the correct source code: This: wget https://github.com/philipl/mpv/archive/refs/heads/v4l2request.zip Gets me a hwdec.c without the lines: extern const struct ra_hwdec_driver ra_hwdec_v4l2request; extern const struct ra_hwdec_driver ra_hwdec_v4l2request_overlay; And possibly more missing stuff New try for source download: $ git clone https://github.com/philipl/mpv.git $ cd mpv $ git checkout -b v4l2request origin/v4l2request $ nano video/out/gpu/hwdec.c <-- contains the changes for v4l2 request, then exit nano without changes $ meson setup build <-- shows the same warnings as before $ meson compile -C build ... I still get this build error Can anybody suggest, how I use these instuctions: https://gist.github.com/linguisticmind/d765a12e121bfdef2e8878b38d11b5ef But use this repo's specific branch: https://github.com/philipl/mpv/tree/v4l2request ? UPDATE: I followed the first step of https://gist.github.com/linguisticmind/d765a12e121bfdef2e8878b38d11b5ef and it installed many more dependencies than I did by myself manually. I returned to the git folder source from philipl, and tried again: Now "meson setup build" shows x11 and wayland support... all the options are enabled, except d3d11

Yep... that looks like the method I had thought about: get the source from https://github.com/philipl/mpv.git#branch=v4l2request and compile it with the v4l2request option I have old experience making redhat rpms, but I need to learn how to make debian debs UPDATE: I wrote my self built debian trixie xfce image with 6.15.4 from July (need 6.13+ for v4l2 kernel functions)... then Install the apt.undo.it repo and ffmpeg, as per the first post of this thread (Following guide from https://github.com/philipl/mpv/tree/v4l2request) $ sudo apt install libavcodec-dev (installs libavutil-dev libswresample-dev automatically) $ sudo apt install libavdevice-dev (installs libavfilter-dev libavformat-dev libpostproc-dev libswscale-dev automatically) $ sudo apt install meson cmake pkg-config Download code: $ wget https://github.com/philipl/mpv/archive/refs/heads/v4l2request.zip $ unzip v4l2request.zip $ cd mpv-4l2request Install libplacebo source $ mkdir -p subprojects $ git clone https://code.videolan.org/videolan/libplacebo.git --depth=1 --recursive subprojects/libplacebo $ sudo apt install libplacebo-dev libass-dev Build: $ meson setup build ^ Finally all the essential dependencies were found, and the disabled features are with a RED "NO"... but v4l2request is ENABLED Compile: $ meson compile -C build FAILED /usr/bin/ld: libmpv.so.2.5.0.p/video_out_gpu_hwdec.c.o:/home/roberto/mpv-4l2request/build/../video/out/gpu/hwdec.c:284: more undefined references to `ra_hwdec_v4l2request' follow /usr/bin/ld: libmpv.so.2.5.0.p/video_out_gpu_hwdec.c.o:(.data.rel.ro+0x8): undefined reference to `ra_hwdec_v4l2request_overlay' Does anybody have any idea how to fix this? What to check? I ran out of time again to research Maybe its the libplacebo (which is a very bad name for GPU libraries)... Debian Trixie=7.349 (mid 2024), VLC repo=7.351 (mid 2025) Repeating the mpv compilation, with libplacebo from VLC There's no wayland or X11 support... someone please please tell me what to do Build... failed Same ra_hwdec_v4l2request and ra_hwdec_v4l2request_request missing error for next try: install wayland-protocols-dev, libx11-dev, libgl-dev, libwayland-dev

Did you mean that you had success getting HW acceleration in Arch Linux+mpv-0.40.0? Which github page did you use, and did you use the standard official instructions in that github page, to build?

Has anyone here configured armbian with a Wayland desktop, and completely free of X11? How did you do it? I have compiled labwc and it works great with my orange pi zero 3, with bookworm or trixie... but I can't figure out how to configure a wayland greeter. I need to do this because my LCD driver can't work with X11 (panel-mipi-dbi-spi).

Describe what you did before to make it work. Show the DTS, the wiring you connected and the linux version that worked. If you used spidev before, I don't have experience in that. I only have experience with these drivers: panel-mipi-dbi-spi, ili9431 and adafrui-xy... The threads I showed you require you to stop using spidev, since the Linux kernel will communicate directly to the LCD, without a user program. Using both will just make them interfere with each other. If the LCD remains white and doesn't even flicker, and you made it work in an older kernel, then keep that wiring. If the /dev/fb0 exists, it means that linux has taken one SPI output port for display, but you need to make sure that: * and SPI parameters in the DTS are correct, * the gpio to handle the command/data, reset parameters are pointing to valid orange pi pins which are not used by anything else * the high/low polarity of those gpio * the wiring is correct, * the initialization bytes are correct

quoting JPL: Did you see any announcement by the github's owner, about what we can expect from her/his source code? Looking at the content of the file, it seems like we need to download the code from: https://github.com/philipl/mpv#branch=v4l2request or https://github.com/philipl/mpv/tree/v4l2request And include this build-time configuration -Dv4l2request='enabled' I have posted instructions to build MPV on Sept 26 in this thread Warning: if you try compiling this MPV source package, don't try it in bookworm. You need Trixie to get the required libavcodec60+ dependency (and maybe others).

Instructions to build mpv, for anyone trying it with trixie... I don't see any pre-compilation options related to v4l2request https://forums.raspberrypi.com/viewtopic.php?t=360902#p2172777 https://github.com/mpv-player/mpv-build https://www.youtube.com/watch?v=KdyX3k8vOhw

Has anybody had success with ffmpeg-v4l2request under Debian TRIXIE? I have seen successful reports from Jammy and Noble users... are they still having success?

I think it will run out or RAM... but try it anyway

That change is already merged into Armbian for the orange pi zero LTS. It was such a long time ago, I don't remember how to use it right now. https://github.com/armbian/build/blob/9ef5b99b220c5e77b55514136e025008c16ccbfd/patch/kernel/archive/sunxi-6.12/patches.armbian/enable-TV-Output-on-OrangePi-Zero-LTE.patch#L8 https://github.com/armbian/build/commit/41260ac309b487d241fec97ffbdeced730bc2d04 Partial progress log https://forum.armbian.com/topic/22226-orange-pi-zero-lts-tv-out-in-2022/#findComment-162035

Is it the 128x160 1.8" red screen? Combine the knowledge of https://forums.raspberrypi.com/viewtopic.php?t=380704&hilit=ST7735S#p2275556 and https://forum.armbian.com/topic/47971-driving-the-ili9488-lcd-40-inch-cheap-chinese-clone/ To use the panel-mipi-dbi-spi driver, which is more universal for SPI screens Warning: you will not get the spidev, and the linux OS will handle all the rendering. Also, X11 may have a problem with Linux 6.14, unless someone fixes a bug

Make sure that the octoprint project still supports 32 bit CPUs For low ram sbc's, I suggest doing a classic installation, instead of Docker You can skip the webcam portion installation, and give you no problems. I had my opiz LTS (512MB) running octoprint last year, and the webcam function works well... but I only used octoprint-Docker when I had 2GB of RAM server.

I don't see it as the very latest bleeding edge kernel version. I see it as a newish Linux, which already has the armbian patches updated for. Some CPUs end up with newer or older Linux versions, due to varying levels of development success. For example, sunxi's armbian edge is 6.15.4 today, but the linux trunk is up to 6.17-rc6 ... (not available in Armbian)

Building a rolling release is more than just showing that in the MOTD. If you do "sudo apt upgrade" in an OS image you just built, you probably will have zero or one packages to upgrade. If you start with an image built a long time ago, or with packages defined a long time ago, then "sudo apt upgrade" would take a long time.

I have the same debian as you: 5.1.4-xxx-v4l2request, installed over Debian Bookworm, with Linux 6.15 (OS built by myself). When I tried the ffmpeg-7.x.x-v4l2request for Trixie, I could not get hardware acceleration.

Search my threads with keyword "ili9341". Post a photo of your wiring, a schematic, and what did you try within armbian... in this thread.

That will definitely make you not get hardware accelerated video Make sure to follow the 3 commands to install the custom repo, its certificate and higher priority: sudo wget http://apt.undo.it:7242/apt.undo.it.asc -O /etc/apt/trusted.gpg.d/apt.undo.it.asc . /etc/os-release && echo "deb http://apt.undo.it:7242 $VERSION_CODENAME main" | sudo tee /etc/apt/sources.list.d/apt.undo.it.list $ echo -e "Package: *\nPin: release o=apt.undo.it\nPin-Priority: 600" | sudo tee /etc/apt/preferences.d/apt-undo-it sudo apt update Then check that the new custom dpkgs are available for install/upgrade apt list ffmpeg-whatever Here's how I force install a specific version: sudo apt install packagename=nn.nn.n

Share your displaying configuration by running "neofetch" and post it here. If your X11 is running on top of framebuffer, instead of DRM, it wont work. I also would like to get more debug from cedrus, linux's v4l2... but at least you can add -v to mpv to get more debug You only need the ffmpeg plugins offered by the original poster of the v4l2-request thread This is tested with mpv player only. v4l2-util and -ctl are only useful for webcams and video capture devices. v4l2loopback is not involved here. I don't have it I have an orange pi zero LTS, but I havent tested it there (I would use an SPI LCD, since it doesn't have an HDMI prot)

For debian problems, do what I do: Get the cheapest raspberry Recreate the problem Ask the question in the raspberry forum Apply solution to Armbian XD

XD take your concerns to Canonical

With the armbian build system, you can build either Bookworm or Trixie You will always get the latest Bookworm or the latest Trixie packages in a freshly built armbian OS. This is what's meant by "always rolling release"... not to be understood as "always sid or Trixie". Independently, the armbian build system will let you choose a stable Linux version, or the latest available from Armbian (edge).

You are still using an old Linux. You need Linux 6.13 or newer. You need to build your own Armbian OS. Also, don't forget the cma=256M kernel argument

Get the microsd card mounted in your linux laptop Open /boot/armbianEnv.txt Add the line: extraargs=plymouth.enable=0 disablehooks=plymouth https://wiki.archlinux.org/title/Plymouth When you get booted in your armbian OS: sudo apt remove plymouth

I don't know anything about this patch, but check this: * Linux version you are using, vs Linux version corneliius has used * Try deleting the hunk in the patch that caused the problem you saw, and see if other hunks cause patch failures * If it is only one hunk causing the problem, look at the file that is affected by the patch drivers/auxdisplay/Makefile: do the lines mentioned in the hunk exist in the Makefile? In the expected line number?