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Accelerated Video Playback: Difference between revisions

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This page is meant to help with techniques for getting accelerated video playback working in NixOS.
<languages/>
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<!--T:1-->
Accelerated video playback in NixOS is generally done by adding relevant packages to {{nixos:option|hardware.graphics.extraPackages}}.
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Sample configuration:
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== Installation == <!--T:18-->
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=== Intel === <!--T:19-->
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{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
  hardware.graphics = {
    enable = true;
    extraPackages = with pkgs; [
      intel-media-driver # For Broadwell (2014) or newer processors. LIBVA_DRIVER_NAME=iHD
      intel-vaapi-driver # For older processors. LIBVA_DRIVER_NAME=i965
    ];
  };
  environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; }; # Optionally, set the environment variable
}
</nowiki>}}
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<!--T:2-->
Note, <code>intel-vaapi-driver</code> still performs better for browsers (gecko/chromium based) on newer Skylake (2015) processors.<ref>https://github.com/intel/media-driver/issues/1024</ref>
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  {
<translate>
    ...
<!--T:3-->
    hardware.opengl = {
For 32-bit support, use
      enable = true;
</translate> {{nixos:option|hardware.graphics.extraPackages32}}:
      extraPackages = with pkgs; [
{{file|/etc/nixos/configuration.nix|nix|<nowiki>
        vaapiIntel
{
        vaapiVdpau
  hardware.graphics.extraPackages32 = with pkgs.pkgsi686Linux; [ intel-vaapi-driver ];
        libvdpau-va-gl
}
      ];
</nowiki>}}
     };
<translate>
     ...
=== AMD === <!--T:4-->
   }
 
<!--T:5-->
AMD configuration (at least for Ryzen 5 iGPUs) works out of the box:
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{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
  hardware.graphics.enable = true;
}
</nowiki>}}
 
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=== NVIDIA ===
 
NVIDIA do not officially support accelerated video playback on Linux. A third-party implementation exists, but does not support Chrome<ref>https://github.com/elFarto/nvidia-vaapi-driver#chrome</ref>, and has significant limitations compared to the other implementations<ref>https://github.com/elFarto/nvidia-vaapi-driver#codec-support</ref>.
 
NVIDIA users with a separate iGPU should generally prefer to use their iGPU for this, and therefore look to the above Intel and AMD sections instead.
 
Users with only an NVIDIA GPU can attempt to use the third party implementation; the package is added to <code>hardware.graphics.extraPackages</code> by default, but it requires some additional setup to be useful<ref>https://github.com/elFarto/nvidia-vaapi-driver#configuration</ref>:
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{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{ config, lib, ...}: {
  environment.variables.LIBVA_DRIVER_NAME = "nvidia"
 
  # If used with Firefox
  environment.variables.MOZ_DISABLE_RDD_SANDBOX = "1";
 
  programs.firefox.preferences = let
    ffVersion = config.programs.firefox.package.version;
  in {
    "media.ffmpeg.vaapi.enabled" = lib.versionOlder ffVersion "137.0.0";
    "media.hardware-video-decoding.force-enabled" = lib.versionAtLeast ffVersion "137.0.0";
    "media.rdd-ffmpeg.enabled" = lib.versionOlder ffVersion "97.0.0";
 
    "gfx.x11-egl.force-enabled" = true;
     "widget.dmabuf.force-enabled" = true;
 
    # Set this to true if your GPU supports AV1.
    #
     # This can be determined by reading the output of the
    # `vainfo` command, after the driver is enabled with
    # the environment variable.
    "media.av1.enabled" = false;
   };
}
</nowiki>}}
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== Testing your configuration == <!--T:6-->
 
<!--T:7-->
You can test your configuration by running: <code>nix-shell -p libva-utils --run vainfo</code>
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<!--T:8-->
See [https://wiki.archlinux.org/index.php/Hardware_video_acceleration#Verification Arch Linux wiki#Hardware video acceleration] for more information.
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== Applications == <!--T:9-->
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<!--T:10-->
=== Chromium ===
See [[Chromium#Accelerated_video_playback]].
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=== Firefox === <!--T:11-->
 
<!--T:12-->
See [https://wiki.archlinux.org/index.php/Firefox#Hardware_video_acceleration Arch Linux wiki#Firefox].
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<!--T:13-->
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=== MPV === <!--T:20-->
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<!--T:21-->
You can place the following configuration in {{ic|~/.config/mpv/mpv.conf}}:
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<!--T:14-->
<syntaxHighlight lang=ini>
hwdec=auto-safe
vo=gpu
profile=gpu-hq
gpu-context=wayland ; On wayland only
</syntaxHighlight>
 
<!--T:15-->
<translate>
<!--T:22-->
See [https://wiki.archlinux.org/title/mpv#Hardware_video_acceleration Arch Linux wiki#mpv].
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<translate>
<!--T:16-->
== Also see ==
* [https://wiki.archlinux.org/index.php/Hardware_video_acceleration Arch Linux wiki#Hardware video acceleration].
* [https://github.com/NixOS/nixos-hardware nixos-hardware] has example configurations for various types of hardware.
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[[Category:Video]]
Retrieved from "https://wiki.nixos.org/wiki/Accelerated_Video_Playback"