anime4k not working in Docker image

[arximboldi]

16:17:34.503452 | INFO     | Video2X 5.0.0-beta7
16:17:34.503660 | INFO     | Copyright (C) 2018-2024 K4YT3X and contributors.
16:17:34.503740 | INFO     | Reading input video information
16:17:34.560257 | WARNING  | No progress bar available for this processor
16:17:34.563567 | ERROR    | [Errno 2] No such file or directory: 'xvfb-run'
Traceback (most recent call last):

  File "/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
           │         │     └ {'__name__': '__main__', '__doc__': '\nCopyright (C) 2018-2024 K4YT3X and contributors.\n\nThis program is free software: you...
           │         └ <code object <module> at 0x7f0b0e322870, file "/usr/local/lib/python3.9/dist-packages/video2x/__main__.py", line 3>
           └ <function _run_code at 0x7f0b6b008430>
  File "/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
         │     └ {'__name__': '__main__', '__doc__': '\nCopyright (C) 2018-2024 K4YT3X and contributors.\n\nThis program is free software: you...
         └ <code object <module> at 0x7f0b0e322870, file "/usr/local/lib/python3.9/dist-packages/video2x/__main__.py", line 3>

  File "/usr/local/lib/python3.9/dist-packages/video2x/__main__.py", line 232, in <module>
    sys.exit(main())
    │   │    └ <function main at 0x7f0b0e323700>
    │   └ <built-in function exit>
    └ <module 'sys' (built-in)>

> File "/usr/local/lib/python3.9/dist-packages/video2x/__main__.py", line 197, in main
    video2x.upscale(
    │       └ <function Video2X.upscale at 0x7f0b0e3233a0>
    └ <video2x.video2x.Video2X object at 0x7f0b66b38370>

  File "/usr/local/lib/python3.9/dist-packages/video2x/video2x.py", line 415, in upscale
    self._run(
    │    └ <function Video2X._run at 0x7f0b0e33faf0>
    └ <video2x.video2x.Video2X object at 0x7f0b66b38370>

  File "/usr/local/lib/python3.9/dist-packages/video2x/video2x.py", line 168, in _run
    standalone_processor().process_video(
    └ <class 'anime4k_python.anime4k.Anime4K'>

  File "/usr/local/lib/python3.9/dist-packages/anime4k_python/anime4k.py", line 64, in process_video
    subprocess.run(command, check=True)
    │          │   └ ['xvfb-run', '-a', 'mpv', '--no-sub', '--glsl-shaders=/usr/local/lib/python3.9/dist-packages/anime4k_python/shaders/Anime4K_M...
    │          └ <function run at 0x7f0b6ac9a550>
    └ <module 'subprocess' from '/usr/lib/python3.9/subprocess.py'>

  File "/usr/lib/python3.9/subprocess.py", line 505, in run
    with Popen(*popenargs, **kwargs) as process:
         │      │            └ {}
         │      └ (['xvfb-run', '-a', 'mpv', '--no-sub', '--glsl-shaders=/usr/local/lib/python3.9/dist-packages/anime4k_python/shaders/Anime4K_...
         └ <class 'subprocess.Popen'>
  File "/usr/lib/python3.9/subprocess.py", line 951, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
    │    │              │     │           │           └ True
    │    │              │     │           └ None
    │    │              │     └ None
    │    │              └ ['xvfb-run', '-a', 'mpv', '--no-sub', '--glsl-shaders=/usr/local/lib/python3.9/dist-packages/anime4k_python/shaders/Anime4K_M...
    │    └ <function Popen._execute_child at 0x7f0b6ac9b4c0>
    └ <Popen: returncode: 255 args: ['xvfb-run', '-a', 'mpv', '--no-sub', '--glsl-...>
  File "/usr/lib/python3.9/subprocess.py", line 1821, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
          │                    │          │        └ 'xvfb-run'
          │                    │          └ 'No such file or directory'
          │                    └ 2
          └ <class 'OSError'>

[arximboldi]

Btw, I have the impression that the way anime4k via animecpp is executed is a bit dated, as one can directly do the processing via mpv or ffmpeg. I haven't managed to do it just with the later, but I have read in some places that it should be possible:
bloc97/Anime4K#200

I use this bash function now to invoke via mpv. It has the problem that it doesn't preserve the subtitle tracks, something that could be maybe solved via ffmpeg.

function anime4k()
{
    echo == INPUT:  $1
    echo == OUTPUT: $2
    mpv "$1" \
        --no-sub \
        --glsl-shaders="~~/shaders/Anime4K_Clamp_Highlights.glsl:~~/shaders/Anime4K_Restore_CNN_VL.glsl:~~/shaders/Anime4K_Upscale_CNN_x2_VL.glsl:~~/shaders/Anime4K_Restore_CNN_M.glsl:~~/shaders/Anime4K_AutoDownscalePre_x2.glsl:~~/shaders/Anime4K_AutoDownscalePre_x4.glsl:~~/shaders/Anime4K_Upscale_CNN_x2_M.glsl" \
        -vf=gpu="w=1440:h=1080" \
        --o="$2"
}

Anyway for now this works for me so it's not the end of the world, but it would be cool to have just one tool for all algorithms!

[arximboldi]

Ah ok! So it seems the backend written by out beloved @k4yt3x already has some support for using ffmpeg under the hood: https://github.com/media2x/anime4k-python

Maybe I can use that mode instead...

[k4yt3x]

Try the new docker image.