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Validate track languages in HLS.to_tracks

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This commit is contained in:
rlaphoenix 2023-12-02 22:40:41 +00:00
parent 86635f9b7f
commit 7cec16d8ab
1 changed files with 17 additions and 3 deletions
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20
devine/core/manifests/hls.py
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@ -16,7 +16,7 @@ from urllib.parse import urljoin
import m3u8
import requests
from langcodes import Language
from langcodes import Language, tag_is_valid
from m3u8 import M3U8
from pywidevine.cdm import Cdm as WidevineCdm
from pywidevine.pssh import PSSH
@ -148,12 +148,26 @@ class HLS:
track_type = Subtitle
codec = Subtitle.Codec.WebVTT # assuming WebVTT, codec info isn't shown
track_lang = next((
Language.get(option)
for x in (media.language, language)
for option in [(str(x) or "").strip()]
if tag_is_valid(option) and not option.startswith("und")
), None)
if not track_lang:
msg = "Language information could not be derived for a media."
if language is None:
msg += " No fallback language was provided when calling HLS.to_tracks()."
elif not tag_is_valid((str(language) or "").strip()) or str(language).startswith("und"):
msg += f" The fallback language provided is also invalid: {language}"
raise ValueError(msg)
tracks.add(track_type(
id_=md5(str(media).encode()).hexdigest()[0:6], # 6 chars only for filename length
url=urljoin(media.base_uri, media.uri),
codec=codec,
language=media.language or language, # HLS media may not have language info, fallback if needed
is_original_lang=language and is_close_match(media.language, [language]),
language=track_lang, # HLS media may not have language info, fallback if needed
is_original_lang=language and is_close_match(track_lang, [language]),
descriptor=Audio.Descriptor.M3U,
drm=session_drm if media.type == "AUDIO" else None,
extra=media,