Test the intel-media-sdk package in Nixpkgs

test-intel-media-sdk.nix

{ lib
, fetchurl
, runCommandNoCC
, runtimeShell
, writers
, ffmpeg-full
, intel-media-driver
}:

let
  fixtures = {
    mp4 = fetchurl {
      url = "https://archive.org/download/BigBuckBunny_310/big_buck_bunny_640_512kb.mp4";
      sha256 = "1f74psji5c5yzbp150gg1z6mw4pvh90177dclp28dlnkl6yhqd3p";
      meta.license = lib.licenses.cc-by-30;
    };
  };
in
writers.writeBash "test-ffmpeg-mfx.sh" ''
  set -euo pipefail

  export LIBVA_DRIVER_NAME='iHD';
  export LD_LIBRARY_PATH='${intel-media-driver}/lib';
  export LIBGL_DRIVERS_PATH='${intel-media-driver}/lib/dri';

  ${ffmpeg-full}/bin/ffmpeg \
    -hwaccel qsv \
    -c:v h264_qsv \
    -i '${fixtures.mp4}' \
    -c:v mpeg2_qsv \
    -c:a copy \
    result.ts
''