[Cin] Rendering, encoding and decoding with Nvidia

[Andrew Randrianasulu]

вт, 14 нояб. 2023 г., 11:08 David Koski via Cin <cin at lists.cinelerra-gg.org
>:

> I've started using CinGG-20230930-x86_64.AppImage and I'm getting the
> hang of the basics.  I have gotten my nvidia hardware engaged with
> Cinelerra for encoding but still the rendering is not all that great and
> my CPUs are loaded down.  On finding that I need environment variables
> to engage decoding, I thought maybe that is hindering my rendering.  So
> with the following setting I started a rendering job:
>
> export CIN_HW_DEV=vdpau
>
> Now I get an error:
>
> recvmsg(22, Failed to open VDPAU backend libvdpau_nvidia.so: cannot open
> shared object file: No such file or directory
>

Are you using libre nouveau driver or proprietary nvidia one?

I think libre driver only can do hw decoding acceleration on GPUs with up
to and including VP5, so around GeForce 750 or so. And even then you need
non-free firmware.

https://nouveau.freedesktop.org/VideoAcceleration.html

I have GF710, and in latest mesa self-compiled as debugoptimized I get some
unfan asserts or even simply black screen.

It works for me in live session with binary driver installed, where I can
use apparently both hw decoder and encoder via nvedec + "cuda" codepath and
nvenc via specialized rendering profile, included with cingg.

I asked on #nouveau IRC channel and sadly encoder reverse engineering is
much harder than I can attempt :( . So I rebooted back into my hdd
installed Slackware with libre driver, in hope to track progress with
reported bugs

https://gitlab.freedesktop.org/mesa/mesa/-/issues/9594

https://gitlab.freedesktop.org/mesa/mesa/-/issues/9582






> libvdpau is installed:
>
> ii  libvdpau-va-gl1 0.4.2-1build2:amd64              VDPAU driver with
> OpenGL/VAAPI backend
> ii  libvdpau1 1.4-3build2:amd64                Video Decode and
> Presentation API for Unix (libraries)
>
> The files exist:
>
> drwxr-xr-x   21 root root   4096 Nov  1 19:29 /./
> drwxr-xr-x  154 root root  12288 Nov  8 21:08 /etc/
> -rw-r--r--    1 root root     51 Apr  9  2020 /etc/vdpau_wrapper.cfg
> drwxr-xr-x   14 root root   4096 Mar  8  2023 /usr/
> drwxr-xr-x  118 root root   4096 Nov  9 20:40 /usr/lib/
> drwxr-xr-x  125 root root 122880 Nov  8 21:08 /usr/lib/x86_64-linux-gnu/
> lrwxrwxrwx    1 root root     17 Mar 24  2022
> /usr/lib/x86_64-linux-gnu/libvdpau.so.1 -> libvdpau.so.1.0.0
> -rw-r--r--    1 root root  18592 Mar 24  2022
> /usr/lib/x86_64-linux-gnu/libvdpau.so.1.0.0
> drwxr-xr-x    2 root root   4096 Sep 30 09:40
> /usr/lib/x86_64-linux-gnu/vdpau/
> lrwxrwxrwx    1 root root     23 Mar 24  2022
> /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_trace.so.1 ->
> libvdpau_trace.so.1.0.0
> -rw-r--r--    1 root root  59544 Mar 24  2022
> /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_trace.so.1.0.0
> drwxr-xr-x  306 root root  12288 Nov  8 21:08 /usr/share/
> drwxr-xr-x  145 root root   4096 Nov  8 21:07 /usr/share/bug/
> -rwxr-xr-x    1 root root    553 Jan  6  2021 /usr/share/bug/libvdpau1*
> drwxr-xr-x 2302 root root  81920 Nov  8 21:08 /usr/share/doc/
> drwxr-xr-x    2 root root   4096 Jul 27 09:19 /usr/share/doc/libvdpau1/
> -rw-r--r--    1 root root   1447 Mar 24  2022
> /usr/share/doc/libvdpau1/changelog.Debian.gz
> -rw-r--r--    1 root root   3208 Jan  6  2021
> /usr/share/doc/libvdpau1/copyright
>
> Regards,
> David Koski
> david at kosmosisland.com
>
> --
> Cin mailing list
> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
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