94 lines
2.9 KiB
Nix
94 lines
2.9 KiB
Nix
{ pkgs, lib, ... }:
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let
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download_subs = pkgs.writers.writePython3 "download_sub" {
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libraries = [ pkgs.python3Packages.subliminal ];
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} ''
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from subliminal import download_best_subtitles, scan_video
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from babelfish import Language
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import sys
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video_filename = sys.argv[1]
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vid = scan_video(video_filename)
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try:
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sub = download_best_subtitles([vid], {Language('eng')})[vid][0]
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filename = '/tmp/' + vid.title + '.srt'
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with open(filename, 'wb+') as file:
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file.write(sub.content)
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print(filename)
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except: # noqa
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print("/dev/null")
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'';
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autosub = pkgs.writeText "autosub.lua" ''
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-- Requires Subliminal version 1.0 or newer
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-- Make sure to specify your system's Subliminal location below:
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local utils = require 'mp.utils'
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-- Log function: log to both terminal and mpv OSD (On-Screen Display)
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function log(string, secs)
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secs = secs or 2 -- secs defaults to 2 when the secs parameter is absent
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mp.msg.warn(string) -- This logs to the terminal
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mp.osd_message(string, secs) -- This logs to mpv screen
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end
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function download()
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log('Searching subtitles ...', 10)
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table = { args = {"${download_subs}", mp.get_property('path')} }
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result = utils.subprocess(table)
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if result.error == nil then
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-- remove trailing newline from subtitle filename
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filename = string.gsub(result.stdout, "\n", "")
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log(filename)
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mp.commandv('sub_add', filename)
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log('Subtitles ready!')
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else
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log('Subtitles failed downloading')
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end
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end
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-- Control function: only download if necessary
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function control_download()
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duration = tonumber(mp.get_property('duration'))
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if duration < 900 then
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mp.msg.warn('Video is less than 15 minutes\n', '=> NOT downloading any subtitles')
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return
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end
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-- There does not seem to be any documentation for the 'sub' property,
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-- but it works on both internally encoded as well as external subtitle files!
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-- -> sub = '1' when subtitles are present
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-- -> sub = 'no' when subtitles are not present
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-- -> sub = 'auto' when called before the 'file-loaded' event is triggered
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sub = mp.get_property('sub')
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if sub == '1' then
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mp.msg.warn('Sub track is already present\n', '=> NOT downloading other subtitles')
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return
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end
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mp.msg.warn('No sub track was detected\n', '=> Proceeding to download subtitles:')
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download()
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end
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mp.add_key_binding('S', "download_subs", download)
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'';
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mpv = pkgs.symlinkJoin {
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name = "mpv";
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paths = [
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(pkgs.writeDashBin "mpv" ''
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exec ${pkgs.mpv}/bin/mpv -vo=gpu --no-config --script=${autosub} "$@"
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'')
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pkgs.mpv
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];
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};
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in {
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environment.systemPackages = [
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mpv
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];
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}
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