mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-12-21 02:37:46 +01:00
337 lines
17 KiB
Python
337 lines
17 KiB
Python
import copy
|
|
import heapq
|
|
import os
|
|
|
|
from .common import PostProcessor
|
|
from .ffmpeg import FFmpegPostProcessor, FFmpegSubtitlesConvertorPP
|
|
from .sponsorblock import SponsorBlockPP
|
|
from ..utils import PostProcessingError, orderedSet, prepend_extension
|
|
|
|
_TINY_CHAPTER_DURATION = 1
|
|
DEFAULT_SPONSORBLOCK_CHAPTER_TITLE = '[SponsorBlock]: %(category_names)l'
|
|
|
|
|
|
class ModifyChaptersPP(FFmpegPostProcessor):
|
|
def __init__(self, downloader, remove_chapters_patterns=None, remove_sponsor_segments=None, remove_ranges=None,
|
|
*, sponsorblock_chapter_title=DEFAULT_SPONSORBLOCK_CHAPTER_TITLE, force_keyframes=False):
|
|
FFmpegPostProcessor.__init__(self, downloader)
|
|
self._remove_chapters_patterns = set(remove_chapters_patterns or [])
|
|
self._remove_sponsor_segments = set(remove_sponsor_segments or []) - set(SponsorBlockPP.NON_SKIPPABLE_CATEGORIES.keys())
|
|
self._ranges_to_remove = set(remove_ranges or [])
|
|
self._sponsorblock_chapter_title = sponsorblock_chapter_title
|
|
self._force_keyframes = force_keyframes
|
|
|
|
@PostProcessor._restrict_to(images=False)
|
|
def run(self, info):
|
|
self._fixup_chapters(info)
|
|
# Chapters must be preserved intact when downloading multiple formats of the same video.
|
|
chapters, sponsor_chapters = self._mark_chapters_to_remove(
|
|
copy.deepcopy(info.get('chapters')) or [],
|
|
copy.deepcopy(info.get('sponsorblock_chapters')) or [])
|
|
if not chapters and not sponsor_chapters:
|
|
return [], info
|
|
|
|
real_duration = self._get_real_video_duration(info['filepath'])
|
|
if not chapters:
|
|
chapters = [{'start_time': 0, 'end_time': info.get('duration') or real_duration, 'title': info['title']}]
|
|
|
|
info['chapters'], cuts = self._remove_marked_arrange_sponsors(chapters + sponsor_chapters)
|
|
if not cuts:
|
|
return [], info
|
|
elif not info['chapters']:
|
|
self.report_warning('You have requested to remove the entire video, which is not possible')
|
|
return [], info
|
|
|
|
original_duration, info['duration'] = info.get('duration'), info['chapters'][-1]['end_time']
|
|
if self._duration_mismatch(real_duration, original_duration, 1):
|
|
if not self._duration_mismatch(real_duration, info['duration']):
|
|
self.to_screen(f'Skipping {self.pp_key()} since the video appears to be already cut')
|
|
return [], info
|
|
if not info.get('__real_download'):
|
|
raise PostProcessingError('Cannot cut video since the real and expected durations mismatch. '
|
|
'Different chapters may have already been removed')
|
|
else:
|
|
self.write_debug('Expected and actual durations mismatch')
|
|
|
|
concat_opts = self._make_concat_opts(cuts, real_duration)
|
|
self.write_debug('Concat spec = %s' % ', '.join(f'{c.get("inpoint", 0.0)}-{c.get("outpoint", "inf")}' for c in concat_opts))
|
|
|
|
def remove_chapters(file, is_sub):
|
|
return file, self.remove_chapters(file, cuts, concat_opts, self._force_keyframes and not is_sub)
|
|
|
|
in_out_files = [remove_chapters(info['filepath'], False)]
|
|
in_out_files.extend(remove_chapters(in_file, True) for in_file in self._get_supported_subs(info))
|
|
|
|
# Renaming should only happen after all files are processed
|
|
files_to_remove = []
|
|
for in_file, out_file in in_out_files:
|
|
mtime = os.stat(in_file).st_mtime
|
|
uncut_file = prepend_extension(in_file, 'uncut')
|
|
os.replace(in_file, uncut_file)
|
|
os.replace(out_file, in_file)
|
|
self.try_utime(in_file, mtime, mtime)
|
|
files_to_remove.append(uncut_file)
|
|
|
|
return files_to_remove, info
|
|
|
|
def _mark_chapters_to_remove(self, chapters, sponsor_chapters):
|
|
if self._remove_chapters_patterns:
|
|
warn_no_chapter_to_remove = True
|
|
if not chapters:
|
|
self.to_screen('Chapter information is unavailable')
|
|
warn_no_chapter_to_remove = False
|
|
for c in chapters:
|
|
if any(regex.search(c['title']) for regex in self._remove_chapters_patterns):
|
|
c['remove'] = True
|
|
warn_no_chapter_to_remove = False
|
|
if warn_no_chapter_to_remove:
|
|
self.to_screen('There are no chapters matching the regex')
|
|
|
|
if self._remove_sponsor_segments:
|
|
warn_no_chapter_to_remove = True
|
|
if not sponsor_chapters:
|
|
self.to_screen('SponsorBlock information is unavailable')
|
|
warn_no_chapter_to_remove = False
|
|
for c in sponsor_chapters:
|
|
if c['category'] in self._remove_sponsor_segments:
|
|
c['remove'] = True
|
|
warn_no_chapter_to_remove = False
|
|
if warn_no_chapter_to_remove:
|
|
self.to_screen('There are no matching SponsorBlock chapters')
|
|
|
|
sponsor_chapters.extend({
|
|
'start_time': start,
|
|
'end_time': end,
|
|
'category': 'manually_removed',
|
|
'_categories': [('manually_removed', start, end, 'Manually removed')],
|
|
'remove': True,
|
|
} for start, end in self._ranges_to_remove)
|
|
|
|
return chapters, sponsor_chapters
|
|
|
|
def _get_supported_subs(self, info):
|
|
for sub in (info.get('requested_subtitles') or {}).values():
|
|
sub_file = sub.get('filepath')
|
|
# The file might have been removed by --embed-subs
|
|
if not sub_file or not os.path.exists(sub_file):
|
|
continue
|
|
ext = sub['ext']
|
|
if ext not in FFmpegSubtitlesConvertorPP.SUPPORTED_EXTS:
|
|
self.report_warning(f'Cannot remove chapters from external {ext} subtitles; "{sub_file}" is now out of sync')
|
|
continue
|
|
# TODO: create __real_download for subs?
|
|
yield sub_file
|
|
|
|
def _remove_marked_arrange_sponsors(self, chapters):
|
|
# Store cuts separately, since adjacent and overlapping cuts must be merged.
|
|
cuts = []
|
|
|
|
def append_cut(c):
|
|
assert 'remove' in c, 'Not a cut is appended to cuts'
|
|
last_to_cut = cuts[-1] if cuts else None
|
|
if last_to_cut and last_to_cut['end_time'] >= c['start_time']:
|
|
last_to_cut['end_time'] = max(last_to_cut['end_time'], c['end_time'])
|
|
else:
|
|
cuts.append(c)
|
|
return len(cuts) - 1
|
|
|
|
def excess_duration(c):
|
|
# Cuts that are completely within the chapter reduce chapters' duration.
|
|
# Since cuts can overlap, excess duration may be less that the sum of cuts' durations.
|
|
# To avoid that, chapter stores the index to the fist cut within the chapter,
|
|
# instead of storing excess duration. append_cut ensures that subsequent cuts (if any)
|
|
# will be merged with previous ones (if necessary).
|
|
cut_idx, excess = c.pop('cut_idx', len(cuts)), 0
|
|
while cut_idx < len(cuts):
|
|
cut = cuts[cut_idx]
|
|
if cut['start_time'] >= c['end_time']:
|
|
break
|
|
if cut['end_time'] > c['start_time']:
|
|
excess += min(cut['end_time'], c['end_time'])
|
|
excess -= max(cut['start_time'], c['start_time'])
|
|
cut_idx += 1
|
|
return excess
|
|
|
|
new_chapters = []
|
|
|
|
def append_chapter(c):
|
|
assert 'remove' not in c, 'Cut is appended to chapters'
|
|
length = c['end_time'] - c['start_time'] - excess_duration(c)
|
|
# Chapter is completely covered by cuts or sponsors.
|
|
if length <= 0:
|
|
return
|
|
start = new_chapters[-1]['end_time'] if new_chapters else 0
|
|
c.update(start_time=start, end_time=start + length)
|
|
new_chapters.append(c)
|
|
|
|
# Turn into a priority queue, index is a tie breaker.
|
|
# Plain stack sorted by start_time is not enough: after splitting the chapter,
|
|
# the part returned to the stack is not guaranteed to have start_time
|
|
# less than or equal to the that of the stack's head.
|
|
chapters = [(c['start_time'], i, c) for i, c in enumerate(chapters)]
|
|
heapq.heapify(chapters)
|
|
|
|
_, cur_i, cur_chapter = heapq.heappop(chapters)
|
|
while chapters:
|
|
_, i, c = heapq.heappop(chapters)
|
|
# Non-overlapping chapters or cuts can be appended directly. However,
|
|
# adjacent non-overlapping cuts must be merged, which is handled by append_cut.
|
|
if cur_chapter['end_time'] <= c['start_time']:
|
|
(append_chapter if 'remove' not in cur_chapter else append_cut)(cur_chapter)
|
|
cur_i, cur_chapter = i, c
|
|
continue
|
|
|
|
# Eight possibilities for overlapping chapters: (cut, cut), (cut, sponsor),
|
|
# (cut, normal), (sponsor, cut), (normal, cut), (sponsor, sponsor),
|
|
# (sponsor, normal), and (normal, sponsor). There is no (normal, normal):
|
|
# normal chapters are assumed not to overlap.
|
|
if 'remove' in cur_chapter:
|
|
# (cut, cut): adjust end_time.
|
|
if 'remove' in c:
|
|
cur_chapter['end_time'] = max(cur_chapter['end_time'], c['end_time'])
|
|
# (cut, sponsor/normal): chop the beginning of the later chapter
|
|
# (if it's not completely hidden by the cut). Push to the priority queue
|
|
# to restore sorting by start_time: with beginning chopped, c may actually
|
|
# start later than the remaining chapters from the queue.
|
|
elif cur_chapter['end_time'] < c['end_time']:
|
|
c['start_time'] = cur_chapter['end_time']
|
|
c['_was_cut'] = True
|
|
heapq.heappush(chapters, (c['start_time'], i, c))
|
|
# (sponsor/normal, cut).
|
|
elif 'remove' in c:
|
|
cur_chapter['_was_cut'] = True
|
|
# Chop the end of the current chapter if the cut is not contained within it.
|
|
# Chopping the end doesn't break start_time sorting, no PQ push is necessary.
|
|
if cur_chapter['end_time'] <= c['end_time']:
|
|
cur_chapter['end_time'] = c['start_time']
|
|
append_chapter(cur_chapter)
|
|
cur_i, cur_chapter = i, c
|
|
continue
|
|
# Current chapter contains the cut within it. If the current chapter is
|
|
# a sponsor chapter, check whether the categories before and after the cut differ.
|
|
if '_categories' in cur_chapter:
|
|
after_c = dict(cur_chapter, start_time=c['end_time'], _categories=[])
|
|
cur_cats = []
|
|
for cat_start_end in cur_chapter['_categories']:
|
|
if cat_start_end[1] < c['start_time']:
|
|
cur_cats.append(cat_start_end)
|
|
if cat_start_end[2] > c['end_time']:
|
|
after_c['_categories'].append(cat_start_end)
|
|
cur_chapter['_categories'] = cur_cats
|
|
if cur_chapter['_categories'] != after_c['_categories']:
|
|
# Categories before and after the cut differ: push the after part to PQ.
|
|
heapq.heappush(chapters, (after_c['start_time'], cur_i, after_c))
|
|
cur_chapter['end_time'] = c['start_time']
|
|
append_chapter(cur_chapter)
|
|
cur_i, cur_chapter = i, c
|
|
continue
|
|
# Either sponsor categories before and after the cut are the same or
|
|
# we're dealing with a normal chapter. Just register an outstanding cut:
|
|
# subsequent append_chapter will reduce the duration.
|
|
cur_chapter.setdefault('cut_idx', append_cut(c))
|
|
# (sponsor, normal): if a normal chapter is not completely overlapped,
|
|
# chop the beginning of it and push it to PQ.
|
|
elif '_categories' in cur_chapter and '_categories' not in c:
|
|
if cur_chapter['end_time'] < c['end_time']:
|
|
c['start_time'] = cur_chapter['end_time']
|
|
c['_was_cut'] = True
|
|
heapq.heappush(chapters, (c['start_time'], i, c))
|
|
# (normal, sponsor) and (sponsor, sponsor)
|
|
else:
|
|
assert '_categories' in c, 'Normal chapters overlap'
|
|
cur_chapter['_was_cut'] = True
|
|
c['_was_cut'] = True
|
|
# Push the part after the sponsor to PQ.
|
|
if cur_chapter['end_time'] > c['end_time']:
|
|
# deepcopy to make categories in after_c and cur_chapter/c refer to different lists.
|
|
after_c = dict(copy.deepcopy(cur_chapter), start_time=c['end_time'])
|
|
heapq.heappush(chapters, (after_c['start_time'], cur_i, after_c))
|
|
# Push the part after the overlap to PQ.
|
|
elif c['end_time'] > cur_chapter['end_time']:
|
|
after_cur = dict(copy.deepcopy(c), start_time=cur_chapter['end_time'])
|
|
heapq.heappush(chapters, (after_cur['start_time'], cur_i, after_cur))
|
|
c['end_time'] = cur_chapter['end_time']
|
|
# (sponsor, sponsor): merge categories in the overlap.
|
|
if '_categories' in cur_chapter:
|
|
c['_categories'] = cur_chapter['_categories'] + c['_categories']
|
|
# Inherit the cuts that the current chapter has accumulated within it.
|
|
if 'cut_idx' in cur_chapter:
|
|
c['cut_idx'] = cur_chapter['cut_idx']
|
|
cur_chapter['end_time'] = c['start_time']
|
|
append_chapter(cur_chapter)
|
|
cur_i, cur_chapter = i, c
|
|
(append_chapter if 'remove' not in cur_chapter else append_cut)(cur_chapter)
|
|
return self._remove_tiny_rename_sponsors(new_chapters), cuts
|
|
|
|
def _remove_tiny_rename_sponsors(self, chapters):
|
|
new_chapters = []
|
|
for i, c in enumerate(chapters):
|
|
# Merge with the previous/next if the chapter is tiny.
|
|
# Only tiny chapters resulting from a cut can be skipped.
|
|
# Chapters that were already tiny in the original list will be preserved.
|
|
if (('_was_cut' in c or '_categories' in c)
|
|
and c['end_time'] - c['start_time'] < _TINY_CHAPTER_DURATION):
|
|
if not new_chapters:
|
|
# Prepend tiny chapter to the next one if possible.
|
|
if i < len(chapters) - 1:
|
|
chapters[i + 1]['start_time'] = c['start_time']
|
|
continue
|
|
else:
|
|
old_c = new_chapters[-1]
|
|
if i < len(chapters) - 1:
|
|
next_c = chapters[i + 1]
|
|
# Not a typo: key names in old_c and next_c are really different.
|
|
prev_is_sponsor = 'categories' in old_c
|
|
next_is_sponsor = '_categories' in next_c
|
|
# Preferentially prepend tiny normals to normals and sponsors to sponsors.
|
|
if (('_categories' not in c and prev_is_sponsor and not next_is_sponsor)
|
|
or ('_categories' in c and not prev_is_sponsor and next_is_sponsor)):
|
|
next_c['start_time'] = c['start_time']
|
|
continue
|
|
old_c['end_time'] = c['end_time']
|
|
continue
|
|
|
|
c.pop('_was_cut', None)
|
|
cats = c.pop('_categories', None)
|
|
if cats:
|
|
category, _, _, category_name = min(cats, key=lambda c: c[2] - c[1])
|
|
c.update({
|
|
'category': category,
|
|
'categories': orderedSet(x[0] for x in cats),
|
|
'name': category_name,
|
|
'category_names': orderedSet(x[3] for x in cats),
|
|
})
|
|
c['title'] = self._downloader.evaluate_outtmpl(self._sponsorblock_chapter_title, c.copy())
|
|
# Merge identically named sponsors.
|
|
if (new_chapters and 'categories' in new_chapters[-1]
|
|
and new_chapters[-1]['title'] == c['title']):
|
|
new_chapters[-1]['end_time'] = c['end_time']
|
|
continue
|
|
new_chapters.append(c)
|
|
return new_chapters
|
|
|
|
def remove_chapters(self, filename, ranges_to_cut, concat_opts, force_keyframes=False):
|
|
in_file = filename
|
|
out_file = prepend_extension(in_file, 'temp')
|
|
if force_keyframes:
|
|
in_file = self.force_keyframes(in_file, (t for c in ranges_to_cut for t in (c['start_time'], c['end_time'])))
|
|
self.to_screen(f'Removing chapters from {filename}')
|
|
self.concat_files([in_file] * len(concat_opts), out_file, concat_opts)
|
|
if in_file != filename:
|
|
self._delete_downloaded_files(in_file, msg=None)
|
|
return out_file
|
|
|
|
@staticmethod
|
|
def _make_concat_opts(chapters_to_remove, duration):
|
|
opts = [{}]
|
|
for s in chapters_to_remove:
|
|
# Do not create 0 duration chunk at the beginning.
|
|
if s['start_time'] == 0:
|
|
opts[-1]['inpoint'] = f'{s["end_time"]:.6f}'
|
|
continue
|
|
opts[-1]['outpoint'] = f'{s["start_time"]:.6f}'
|
|
# Do not create 0 duration chunk at the end.
|
|
if s['end_time'] < duration:
|
|
opts.append({'inpoint': f'{s["end_time"]:.6f}'})
|
|
return opts
|