mirror of
https://github.com/devine-dl/devine.git
synced 2025-04-29 17:49:44 +00:00
9f48aab80c
This results in a noticeably faster speed cancelling segmented track downloads on CTRL+C and Errors. It's also reducing code duplication as the dl code will now handle the exception and cleanup for them. This also simplifies the STOPPING/STOPPED and FAILING/FAILED status messages by quite a bit.
640 lines
28 KiB
Python
640 lines
28 KiB
Python
from __future__ import annotations
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import base64
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import logging
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import math
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import re
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import sys
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import time
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from concurrent import futures
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from concurrent.futures import ThreadPoolExecutor
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from copy import copy
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from functools import partial
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from hashlib import md5
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from pathlib import Path
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from threading import Event
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from typing import Any, Callable, Optional, Union
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from urllib.parse import urljoin, urlparse
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from uuid import UUID
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import requests
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from langcodes import Language, tag_is_valid
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from pywidevine.cdm import Cdm as WidevineCdm
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from pywidevine.pssh import PSSH
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from requests import Session
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from rich import filesize
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from devine.core.constants import AnyTrack
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from devine.core.downloaders import aria2c
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from devine.core.drm import Widevine
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from devine.core.tracks import Audio, Subtitle, Tracks, Video
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from devine.core.utilities import is_close_match
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from devine.core.utils.xml import load_xml
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class DASH:
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def __init__(self, manifest, url: str):
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if manifest is None:
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raise ValueError("DASH manifest must be provided.")
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if manifest.tag != "MPD":
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raise TypeError(f"Expected 'MPD' document, but received a '{manifest.tag}' document instead.")
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if not url:
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raise requests.URLRequired("DASH manifest URL must be provided for relative path computations.")
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if not isinstance(url, str):
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raise TypeError(f"Expected url to be a {str}, not {url!r}")
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self.manifest = manifest
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self.url = url
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@classmethod
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def from_url(cls, url: str, session: Optional[Session] = None, **args: Any) -> DASH:
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if not url:
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raise requests.URLRequired("DASH manifest URL must be provided for relative path computations.")
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if not isinstance(url, str):
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raise TypeError(f"Expected url to be a {str}, not {url!r}")
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if not session:
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session = Session()
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elif not isinstance(session, Session):
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raise TypeError(f"Expected session to be a {Session}, not {session!r}")
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res = session.get(url, **args)
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if res.url != url:
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url = res.url
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if not res.ok:
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raise requests.ConnectionError(
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"Failed to request the MPD document.",
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response=res
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)
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return DASH.from_text(res.text, url)
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@classmethod
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def from_text(cls, text: str, url: str) -> DASH:
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if not text:
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raise ValueError("DASH manifest Text must be provided.")
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if not isinstance(text, str):
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raise TypeError(f"Expected text to be a {str}, not {text!r}")
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if not url:
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raise requests.URLRequired("DASH manifest URL must be provided for relative path computations.")
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if not isinstance(url, str):
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raise TypeError(f"Expected url to be a {str}, not {url!r}")
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manifest = load_xml(text)
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return cls(manifest, url)
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def to_tracks(self, language: Union[str, Language], period_filter: Optional[Callable] = None) -> Tracks:
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"""
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Convert an MPEG-DASH MPD (Media Presentation Description) document to Video, Audio and Subtitle Track objects.
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Parameters:
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language: Language you expect the Primary Track to be in.
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period_filter: Filter out period's within the manifest.
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All Track URLs will be a list of segment URLs.
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"""
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tracks = Tracks()
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for period in self.manifest.findall("Period"):
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if callable(period_filter) and period_filter(period):
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continue
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for adaptation_set in period.findall("AdaptationSet"):
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trick_mode = any(
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x.get("schemeIdUri") == "http://dashif.org/guidelines/trickmode"
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for x in (
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adaptation_set.findall("EssentialProperty") +
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adaptation_set.findall("SupplementalProperty")
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)
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)
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if trick_mode:
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# we don't want trick mode streams (they are only used for fast-forward/rewind)
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continue
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descriptive = any(
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(x.get("schemeIdUri"), x.get("value")) == ("urn:mpeg:dash:role:2011", "descriptive")
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for x in adaptation_set.findall("Accessibility")
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) or any(
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(x.get("schemeIdUri"), x.get("value")) == ("urn:tva:metadata:cs:AudioPurposeCS:2007", "1")
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for x in adaptation_set.findall("Accessibility")
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)
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forced = any(
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(x.get("schemeIdUri"), x.get("value")) == ("urn:mpeg:dash:role:2011", "forced-subtitle")
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for x in adaptation_set.findall("Role")
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)
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cc = any(
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(x.get("schemeIdUri"), x.get("value")) == ("urn:mpeg:dash:role:2011", "caption")
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for x in adaptation_set.findall("Role")
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)
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for rep in adaptation_set.findall("Representation"):
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codecs = rep.get("codecs") or adaptation_set.get("codecs")
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content_type = adaptation_set.get("contentType") or \
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adaptation_set.get("mimeType") or \
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rep.get("contentType") or \
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rep.get("mimeType")
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if not content_type:
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raise ValueError("No content type value could be found")
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content_type = content_type.split("/")[0]
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if content_type.startswith("image"):
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# we don't want what's likely thumbnails for the seekbar
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continue
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if content_type == "application":
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# possibly application/mp4 which could be mp4-boxed subtitles
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try:
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Subtitle.Codec.from_mime(codecs)
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content_type = "text"
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except ValueError:
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raise ValueError(f"Unsupported content type '{content_type}' with codecs of '{codecs}'")
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if content_type == "text":
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mime = adaptation_set.get("mimeType")
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if mime and not mime.endswith("/mp4"):
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codecs = mime.split("/")[1]
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supplements = rep.findall("SupplementalProperty") + adaptation_set.findall("SupplementalProperty")
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joc = next((
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x.get("value")
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for x in supplements
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if x.get("schemeIdUri") == "tag:dolby.com,2018:dash:EC3_ExtensionComplexityIndex:2018"
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), None)
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track_lang = DASH.get_language(rep.get("lang"), adaptation_set.get("lang"), language)
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if not track_lang:
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raise ValueError(
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"One or more Tracks had no Language information. "
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"The provided fallback language is not valid or is `None` or `und`."
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)
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# for some reason it's incredibly common for services to not provide
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# a good and actually unique track ID, sometimes because of the lang
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# dialect not being represented in the id, or the bitrate, or such.
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# this combines all of them as one and hashes it to keep it small(ish).
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track_id = md5("{codec}-{lang}-{bitrate}-{base_url}-{extra}".format(
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codec=codecs,
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lang=track_lang,
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bitrate=rep.get("bandwidth") or 0, # subs may not state bandwidth
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base_url=(rep.findtext("BaseURL") or "").split("?")[0],
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extra=(adaptation_set.get("audioTrackId") or "") + (rep.get("id") or "") +
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(period.get("id") or "")
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).encode()).hexdigest()
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if content_type == "video":
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track_type = Video
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track_codec = Video.Codec.from_codecs(codecs)
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elif content_type == "audio":
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track_type = Audio
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track_codec = Audio.Codec.from_codecs(codecs)
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elif content_type == "text":
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track_type = Subtitle
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track_codec = Subtitle.Codec.from_codecs(codecs or "vtt")
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else:
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raise ValueError(f"Unknown Track Type '{content_type}'")
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tracks.add(track_type(
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id_=track_id,
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url=(self.url, rep, adaptation_set, period),
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codec=track_codec,
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language=track_lang,
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is_original_lang=not track_lang or not language or is_close_match(track_lang, [language]),
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descriptor=Video.Descriptor.MPD,
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extra=(rep, adaptation_set),
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# video track args
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**(dict(
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range_=(
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Video.Range.DV
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if codecs.startswith(("dva1", "dvav", "dvhe", "dvh1")) else
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Video.Range.from_cicp(
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primaries=next((
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int(x.get("value"))
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for x in (
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adaptation_set.findall("SupplementalProperty")
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+ adaptation_set.findall("EssentialProperty")
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)
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if x.get("schemeIdUri") == "urn:mpeg:mpegB:cicp:ColourPrimaries"
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), 0),
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transfer=next((
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int(x.get("value"))
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for x in (
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adaptation_set.findall("SupplementalProperty")
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+ adaptation_set.findall("EssentialProperty")
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)
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if x.get("schemeIdUri") == "urn:mpeg:mpegB:cicp:TransferCharacteristics"
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), 0),
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matrix=next((
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int(x.get("value"))
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for x in (
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adaptation_set.findall("SupplementalProperty")
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+ adaptation_set.findall("EssentialProperty")
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)
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if x.get("schemeIdUri") == "urn:mpeg:mpegB:cicp:MatrixCoefficients"
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), 0)
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)
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),
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bitrate=rep.get("bandwidth"),
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width=int(rep.get("width") or 0) or adaptation_set.get("width"),
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height=int(rep.get("height") or 0) or adaptation_set.get("height"),
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fps=(
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rep.get("frameRate") or
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adaptation_set.get("frameRate") or
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(
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rep.find("SegmentBase").get("timescale") if
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rep.find("SegmentBase") is not None else None
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)
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)
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) if track_type is Video else dict(
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bitrate=rep.get("bandwidth"),
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channels=next(iter(
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rep.xpath("AudioChannelConfiguration/@value")
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or adaptation_set.xpath("AudioChannelConfiguration/@value")
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), None),
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joc=joc,
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descriptive=descriptive
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) if track_type is Audio else dict(
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forced=forced,
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cc=cc
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) if track_type is Subtitle else {})
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))
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# only get tracks from the first main-content period
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break
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return tracks
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@staticmethod
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def download_track(
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track: AnyTrack,
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save_path: Path,
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save_dir: Path,
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stop_event: Event,
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progress: partial,
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session: Optional[Session] = None,
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proxy: Optional[str] = None,
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license_widevine: Optional[Callable] = None
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):
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if not session:
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session = Session()
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elif not isinstance(session, Session):
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raise TypeError(f"Expected session to be a {Session}, not {session!r}")
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if not track.needs_proxy and proxy:
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proxy = None
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if proxy:
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session.proxies.update({
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"all": proxy
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})
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log = logging.getLogger("DASH")
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manifest_url, representation, adaptation_set, period = track.url
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drm = DASH.get_drm(
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representation.findall("ContentProtection") +
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adaptation_set.findall("ContentProtection")
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)
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if drm:
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drm = drm[0] # just use the first supported DRM system for now
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if isinstance(drm, Widevine):
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# license and grab content keys
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if not license_widevine:
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raise ValueError("license_widevine func must be supplied to use Widevine DRM")
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license_widevine(drm)
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else:
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drm = None
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manifest = load_xml(session.get(manifest_url).text)
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manifest_url_query = urlparse(manifest_url).query
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period_base_url = period.findtext("BaseURL") or manifest.findtext("BaseURL")
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if not period_base_url or not re.match("^https?://", period_base_url, re.IGNORECASE):
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period_base_url = urljoin(manifest_url, period_base_url)
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period_duration = period.get("duration") or manifest.get("mediaPresentationDuration")
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init_data: Optional[bytes] = None
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base_url = representation.findtext("BaseURL") or period_base_url
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segment_template = representation.find("SegmentTemplate")
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if segment_template is None:
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segment_template = adaptation_set.find("SegmentTemplate")
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segment_list = representation.find("SegmentList")
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if segment_list is None:
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segment_list = adaptation_set.find("SegmentList")
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if segment_template is None and segment_list is None and base_url:
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# If there's no SegmentTemplate and no SegmentList, then SegmentBase is used or just BaseURL
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# Regardless which of the two is used, we can just directly grab the BaseURL
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# Players would normally calculate segments via Byte-Ranges, but we don't care
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track.url = urljoin(period_base_url, base_url)
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track.descriptor = track.Descriptor.URL
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track.drm = [drm] if drm else []
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else:
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segments: list[tuple[str, Optional[str]]] = []
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if segment_template is not None:
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segment_template = copy(segment_template)
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start_number = int(segment_template.get("startNumber") or 1)
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segment_timeline = segment_template.find("SegmentTimeline")
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for item in ("initialization", "media"):
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value = segment_template.get(item)
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if not value:
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continue
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if not re.match("^https?://", value, re.IGNORECASE):
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if not base_url:
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raise ValueError("Resolved Segment URL is not absolute, and no Base URL is available.")
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value = urljoin(base_url, value)
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if not urlparse(value).query and manifest_url_query:
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value += f"?{manifest_url_query}"
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segment_template.set(item, value)
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init_url = segment_template.get("initialization")
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if init_url:
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res = session.get(DASH.replace_fields(
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init_url,
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Bandwidth=representation.get("bandwidth"),
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RepresentationID=representation.get("id")
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))
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res.raise_for_status()
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init_data = res.content
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if segment_timeline is not None:
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seg_time_list = []
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current_time = 0
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for s in segment_timeline.findall("S"):
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if s.get("t"):
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current_time = int(s.get("t"))
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for _ in range(1 + (int(s.get("r") or 0))):
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seg_time_list.append(current_time)
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current_time += int(s.get("d"))
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seg_num_list = list(range(start_number, len(seg_time_list) + start_number))
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for t, n in zip(seg_time_list, seg_num_list):
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segments.append((
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DASH.replace_fields(
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segment_template.get("media"),
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Bandwidth=representation.get("bandwidth"),
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Number=n,
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RepresentationID=representation.get("id"),
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Time=t
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), None
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))
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else:
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if not period_duration:
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raise ValueError("Duration of the Period was unable to be determined.")
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period_duration = DASH.pt_to_sec(period_duration)
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segment_duration = float(segment_template.get("duration"))
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segment_timescale = float(segment_template.get("timescale") or 1)
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total_segments = math.ceil(period_duration / (segment_duration / segment_timescale))
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for s in range(start_number, start_number + total_segments):
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segments.append((
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DASH.replace_fields(
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segment_template.get("media"),
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Bandwidth=representation.get("bandwidth"),
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Number=s,
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RepresentationID=representation.get("id"),
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Time=s
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), None
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))
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elif segment_list is not None:
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base_media_url = urljoin(period_base_url, base_url)
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init_data = None
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initialization = segment_list.find("Initialization")
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if initialization:
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source_url = initialization.get("sourceURL")
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if source_url is None:
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source_url = base_media_url
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res = session.get(source_url)
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res.raise_for_status()
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init_data = res.content
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segment_urls = segment_list.findall("SegmentURL")
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for segment_url in segment_urls:
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media_url = segment_url.get("media")
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if media_url is None:
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media_url = base_media_url
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segments.append((
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media_url,
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segment_url.get("mediaRange")
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))
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else:
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log.error("Could not find a way to get segments from this MPD manifest.")
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log.debug(manifest_url)
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sys.exit(1)
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if not drm and isinstance(track, (Video, Audio)):
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try:
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drm = Widevine.from_init_data(init_data)
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except Widevine.Exceptions.PSSHNotFound:
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# it might not have Widevine DRM, or might not have found the PSSH
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log.warning("No Widevine PSSH was found for this track, is it DRM free?")
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else:
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# license and grab content keys
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if not license_widevine:
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raise ValueError("license_widevine func must be supplied to use Widevine DRM")
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license_widevine(drm)
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def download_segment(filename: str, segment: tuple[str, Optional[str]]) -> int:
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if stop_event.is_set():
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# the track already started downloading, but another failed or was stopped
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raise KeyboardInterrupt()
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segment_save_path = (save_dir / filename).with_suffix(".mp4")
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segment_uri, segment_range = segment
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if segment_range:
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# aria2(c) doesn't support byte ranges, let's use python-requests (likely slower)
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r = session.get(
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url=segment_uri,
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headers={
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"Range": f"bytes={segment_range}"
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}
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)
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r.raise_for_status()
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segment_save_path.parent.mkdir(parents=True, exist_ok=True)
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segment_save_path.write_bytes(res.content)
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else:
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aria2c(
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uri=segment_uri,
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out=segment_save_path,
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headers=session.headers,
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proxy=proxy,
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silent=True
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)
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data_size = segment_save_path.stat().st_size
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if isinstance(track, Audio) or init_data:
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with open(segment_save_path, "rb+") as f:
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segment_data = f.read()
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if isinstance(track, Audio):
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# fix audio decryption on ATVP by fixing the sample description index
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# TODO: Is this in mpeg data, or init data?
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segment_data = re.sub(
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b"(tfhd\x00\x02\x00\x1a\x00\x00\x00\x01\x00\x00\x00)\x02",
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b"\\g<1>\x01",
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segment_data
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)
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|
# prepend the init data to be able to decrypt
|
|
if init_data:
|
|
f.seek(0)
|
|
f.write(init_data)
|
|
f.write(segment_data)
|
|
|
|
if drm:
|
|
# TODO: What if the manifest does not mention DRM, but has DRM
|
|
drm.decrypt(segment_save_path)
|
|
track.drm = None
|
|
if callable(track.OnDecrypted):
|
|
track.OnDecrypted(track)
|
|
|
|
return data_size
|
|
|
|
progress(total=len(segments))
|
|
|
|
finished_threads = 0
|
|
download_sizes = []
|
|
last_speed_refresh = time.time()
|
|
|
|
with ThreadPoolExecutor(max_workers=16) as pool:
|
|
for download in futures.as_completed((
|
|
pool.submit(
|
|
download_segment,
|
|
filename=str(i).zfill(len(str(len(segments)))),
|
|
segment=segment
|
|
)
|
|
for i, segment in enumerate(segments)
|
|
)):
|
|
finished_threads += 1
|
|
|
|
try:
|
|
download_size = download.result()
|
|
except KeyboardInterrupt:
|
|
stop_event.set() # skip pending track downloads
|
|
progress(downloaded="[yellow]STOPPING")
|
|
pool.shutdown(wait=True, cancel_futures=True)
|
|
progress(downloaded="[yellow]STOPPED")
|
|
# tell dl that it was cancelled
|
|
# the pool is already shut down, so exiting loop is fine
|
|
raise
|
|
except Exception as e:
|
|
stop_event.set() # skip pending track downloads
|
|
progress(downloaded="[red]FAILING")
|
|
pool.shutdown(wait=True, cancel_futures=True)
|
|
progress(downloaded="[red]FAILED")
|
|
# tell dl that it failed
|
|
# the pool is already shut down, so exiting loop is fine
|
|
raise e
|
|
else:
|
|
# it successfully downloaded, and it was not cancelled
|
|
progress(advance=1)
|
|
|
|
now = time.time()
|
|
time_since = now - last_speed_refresh
|
|
|
|
if download_size: # no size == skipped dl
|
|
download_sizes.append(download_size)
|
|
|
|
if download_sizes and (time_since > 5 or finished_threads == len(segments)):
|
|
data_size = sum(download_sizes)
|
|
download_speed = data_size / time_since
|
|
progress(downloaded=f"DASH {filesize.decimal(download_speed)}/s")
|
|
last_speed_refresh = now
|
|
download_sizes.clear()
|
|
|
|
with open(save_path, "wb") as f:
|
|
for segment_file in sorted(save_dir.iterdir()):
|
|
f.write(segment_file.read_bytes())
|
|
segment_file.unlink()
|
|
|
|
track.path = save_path
|
|
save_dir.rmdir()
|
|
|
|
@staticmethod
|
|
def get_language(*options: Any) -> Optional[Language]:
|
|
for option in options:
|
|
option = (str(option) or "").strip()
|
|
if not tag_is_valid(option) or option.startswith("und"):
|
|
continue
|
|
return Language.get(option)
|
|
|
|
@staticmethod
|
|
def get_drm(protections) -> list[Widevine]:
|
|
drm = []
|
|
|
|
for protection in protections:
|
|
# TODO: Add checks for PlayReady, FairPlay, maybe more
|
|
urn = (protection.get("schemeIdUri") or "").lower()
|
|
if urn != WidevineCdm.urn:
|
|
continue
|
|
|
|
pssh = protection.findtext("pssh")
|
|
if not pssh:
|
|
continue
|
|
pssh = PSSH(pssh)
|
|
|
|
kid = protection.get("kid")
|
|
if kid:
|
|
kid = UUID(bytes=base64.b64decode(kid))
|
|
|
|
default_kid = protection.get("default_KID")
|
|
if default_kid:
|
|
kid = UUID(default_kid)
|
|
|
|
if not pssh.key_ids and not kid:
|
|
# weird manifest, look across all protections for a default_KID
|
|
kid = next((
|
|
UUID(protection.get("default_KID"))
|
|
for protection in protections
|
|
if protection.get("default_KID")
|
|
), None)
|
|
|
|
drm.append(Widevine(
|
|
pssh=pssh,
|
|
kid=kid
|
|
))
|
|
|
|
return drm
|
|
|
|
@staticmethod
|
|
def pt_to_sec(d: Union[str, float]) -> float:
|
|
if isinstance(d, float):
|
|
return d
|
|
has_ymd = d[0:8] == "P0Y0M0DT"
|
|
if d[0:2] != "PT" and not has_ymd:
|
|
raise ValueError("Input data is not a valid time string.")
|
|
if has_ymd:
|
|
d = d[6:].upper() # skip `P0Y0M0DT`
|
|
else:
|
|
d = d[2:].upper() # skip `PT`
|
|
m = re.findall(r"([\d.]+.)", d)
|
|
return sum(
|
|
float(x[0:-1]) * {"H": 60 * 60, "M": 60, "S": 1}[x[-1].upper()]
|
|
for x in m
|
|
)
|
|
|
|
@staticmethod
|
|
def replace_fields(url: str, **kwargs: Any) -> str:
|
|
for field, value in kwargs.items():
|
|
url = url.replace(f"${field}$", str(value))
|
|
m = re.search(fr"\${re.escape(field)}%([a-z0-9]+)\$", url, flags=re.I)
|
|
if m:
|
|
url = url.replace(m.group(), f"{value:{m.group(1)}}")
|
|
return url
|
|
|
|
|
|
__ALL__ = (DASH,)
|