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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. This is generally done via libva and vaapi (and sometimes vdpau).
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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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This is done by adding relevant <code>libva</code>-related packages to the <code>hardware.opengl.extraPackages</code> option.
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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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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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Additionally, the <code>vaapiIntel</code> package can be overriden to enable [https://github.com/01org/intel-hybrid-driver Intel's Hybrid Driver].
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<!--T:3-->
For 32-bit support, use
</translate> {{nixos:option|hardware.graphics.extraPackages32}}:
{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{
  hardware.graphics.extraPackages32 = with pkgs.pkgsi686Linux; [ intel-vaapi-driver ];
}
</nowiki>}}
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=== AMD === <!--T:4-->


Intel users also can enable <code>intel-media-driver</code>. It can be used at runtime with <code>LIBVA_DRIVER_NAME=iHD mpv ...</code> for example, if you use Mic92's mpv settings below.
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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>}}


Sample configuration:
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=== NVIDIA === <!--T:23-->


  {
<!--T:24-->
    ...
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>.
    nixpkgs.config.packageOverrides = pkgs: {
      vaapiIntel = pkgs.vaapiIntel.override { enableHybridCodec = true; };
    };
    hardware.opengl = {
      enable = true;
      extraPackages = with pkgs; [
        vaapiIntel
        vaapiVdpau
        libvdpau-va-gl
        intel-media-driver # only available starting nixos-19.03 or the current nixos-unstable
      ];
    };
    ...
  }
 


== Prepared Hardware configuration ==
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Sometimes different opengl packages are required to achieve full performance. You can check different configuration repositories for similar hardware configuration:
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.
* [https://github.com/NixOS/nixos-hardware The NixOS-Hardware Repository]


<!--T:26-->
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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== Applications ==
{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{ config, lib, ...}: {
  environment.variables.LIBVA_DRIVER_NAME = "nvidia"


===Chromium===
  # If used with Firefox
Needs a patch for VA-API support, see [https://github.com/NixOS/nixpkgs/issues/21481 nixpkgs#21481] for current status.
  environment.variables.MOZ_DISABLE_RDD_SANDBOX = "1";


===MPV===
  programs.firefox.preferences = let
@Mic92 needed the following configuration in <code>~/.mpv/config</code>
    ffVersion = config.programs.firefox.package.version;
for mpv to use hardware acceleration for VP9 on Intel Broadwell:
  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";


<syntaxHighlight>
    "gfx.x11-egl.force-enabled" = true;
hwdec=vaapi
    "widget.dmabuf.force-enabled" = true;
vo=gpu
 
hwdec-codecs=all
    # 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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<syntaxHighlight lang=ini>
hwdec=auto
</syntaxHighlight>
</syntaxHighlight>


This is based on the [https://wiki.archlinux.org/index.php/Mpv#Hardware_decoding archlinux MPV article].
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<!--T:22-->
See [https://wiki.archlinux.org/title/mpv#Hardware_video_acceleration Arch Linux wiki#mpv].
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== Also see ==
* [https://wiki.archlinux.org/index.php/Hardware_video_acceleration Arch Linux wiki#Hardware video acceleration].
* [https://wiki.gentoo.org/wiki/VAAPI Gentoo Wiki#VAAPI.]
* [https://github.com/NixOS/nixos-hardware nixos-hardware] has example configurations for various types of hardware.
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===Other===
[[Category:Video]]
See the [https://wiki.archlinux.org/index.php/Hardware_video_acceleration#Application_support Arch Linux wiki].
Retrieved from "https://wiki.nixos.org/wiki/Accelerated_Video_Playback"