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[dash,youtube] Download live from start to end (#888)

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* Add option `--live-from-start` to enable downloading live videos from start
* Add key `is_from_start` in formats to identify formats (of live videos) that downloads from start
* [dash] Create protocol `http_dash_segments_generator` that allows a function to be passed instead of fragments
* [fragment] Allow multiple live dash formats to download simultaneously
* [youtube] Implement fragment re-fetching for the live dash formats
* [youtube] Re-extract dash manifest every 5 hours (manifest expires in 6hrs)
* [postprocessor/ffmpeg] Add `FFmpegFixupDuplicateMoovPP` to fixup duplicated moov atoms

Known issue: Ctrl+C doesn't work on Windows when downloading multiple formats

Closes #1521
Authored by: nao20010128nao, pukkandan
This commit is contained in:
The Hatsune Daishi
2021-12-20 15:06:46 +09:00
committed by GitHub
parent c031b0414c
commit adbc4ec4bb
15 changed files with 355 additions and 100 deletions
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6
yt_dlp/utils.py
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@@ -2631,12 +2631,6 @@ class LazyList(collections.abc.Sequence):
def __copy__(self):
return type(self)(self.__iterable, reverse=self.__reversed, _cache=self.__cache)
def __deepcopy__(self, memo):
# FIXME: This is actually just a shallow copy
id_ = id(self)
memo[id_] = self.__copy__()
return memo[id_]
def __repr__(self):
# repr and str should mimic a list. So we exhaust the iterable
return repr(self.exhaust())