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yt-dlp
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Allow empty output template to skip a type of file 

Closes #760, #1111
This commit is contained in:
pukkandan 2021-09-30 02:14:42 +05:30
parent 1f2a268bd3
commit 80c03fa98f
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3 changed files with 150 additions and 134 deletions
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2
README.md
View File

@ -971,7 +971,7 @@ To summarize, the general syntax for a field is:
%(name[.keys][addition][>strf][,alternate][|default])[flags][width][.precision][length]type
```
Additionally, you can set different output templates for the various metadata files separately from the general output template by specifying the type of file followed by the template separated by a colon `:`. The different file types supported are `subtitle`, `thumbnail`, `description`, `annotation` (deprecated), `infojson`, `pl_thumbnail`, `pl_description`, `pl_infojson`, `chapter`. For example, `-o '%(title)s.%(ext)s' -o 'thumbnail:%(title)s\%(title)s.%(ext)s'` will put the thumbnails in a folder with the same name as the video.
Additionally, you can set different output templates for the various metadata files separately from the general output template by specifying the type of file followed by the template separated by a colon `:`. The different file types supported are `subtitle`, `thumbnail`, `description`, `annotation` (deprecated), `infojson`, `pl_thumbnail`, `pl_description`, `pl_infojson`, `chapter`. For example, `-o '%(title)s.%(ext)s' -o 'thumbnail:%(title)s\%(title)s.%(ext)s'` will put the thumbnails in a folder with the same name as the video. If any of the templates (except default) is empty, that type of file will not be written. Eg: `--write-thumbnail -o "thumbnail:"` will write thumbnails only for playlists and not for video.
The available fields are:

281
yt_dlp/YoutubeDL.py
View File

@ -859,7 +859,7 @@ class YoutubeDL(object):
outtmpl_dict = {'default': outtmpl_dict}
outtmpl_dict.update({
k: v for k, v in DEFAULT_OUTTMPL.items()
if not outtmpl_dict.get(k)})
if outtmpl_dict.get(k) is None})
for key, val in outtmpl_dict.items():
if isinstance(val, bytes):
self.report_warning(
@ -1084,7 +1084,7 @@ class YoutubeDL(object):
filename = outtmpl % template_dict
force_ext = OUTTMPL_TYPES.get(tmpl_type)
if force_ext is not None:
if filename and force_ext is not None:
filename = replace_extension(filename, force_ext, info_dict.get('ext'))
# https://github.com/blackjack4494/youtube-dlc/issues/85
@ -1106,6 +1106,8 @@ class YoutubeDL(object):
"""Generate the output filename."""
filename = self._prepare_filename(info_dict, dir_type or 'default')
if not filename and dir_type not in ('', 'temp'):
return ''
if warn:
if not self.params.get('paths'):
@ -1517,38 +1519,14 @@ class YoutubeDL(object):
}
ie_copy.update(dict(ie_result))
if self.params.get('writeinfojson', False):
infofn = self.prepare_filename(ie_copy, 'pl_infojson')
if not self._ensure_dir_exists(encodeFilename(infofn)):
return
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(infofn)):
self.to_screen('[info] Playlist metadata is already present')
else:
self.to_screen('[info] Writing playlist metadata as JSON to: ' + infofn)
try:
write_json_file(self.sanitize_info(ie_result, self.params.get('clean_infojson', True)), infofn)
except (OSError, IOError):
self.report_error('Cannot write playlist metadata to JSON file ' + infofn)
if self._write_info_json('playlist', ie_result,
self.prepare_filename(ie_copy, 'pl_infojson')) is None:
return
if self._write_description('playlist', ie_result,
self.prepare_filename(ie_copy, 'pl_description')) is None:
return
# TODO: This should be passed to ThumbnailsConvertor if necessary
self._write_thumbnails(ie_copy, self.prepare_filename(ie_copy, 'pl_thumbnail'))
if self.params.get('writedescription', False):
descfn = self.prepare_filename(ie_copy, 'pl_description')
if not self._ensure_dir_exists(encodeFilename(descfn)):
return
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(descfn)):
self.to_screen('[info] Playlist description is already present')
elif ie_result.get('description') is None:
self.report_warning('There\'s no playlist description to write.')
else:
try:
self.to_screen('[info] Writing playlist description to: ' + descfn)
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
descfile.write(ie_result['description'])
except (OSError, IOError):
self.report_error('Cannot write playlist description file ' + descfn)
return
self._write_thumbnails('playlist', ie_copy, self.prepare_filename(ie_copy, 'pl_thumbnail'))
if self.params.get('playlistreverse', False):
entries = entries[::-1]
@ -2528,37 +2506,43 @@ class YoutubeDL(object):
if self.params.get('simulate'):
if self.params.get('force_write_download_archive', False):
self.record_download_archive(info_dict)
# Do nothing else if in simulate mode
return
if full_filename is None:
return
if not self._ensure_dir_exists(encodeFilename(full_filename)):
return
if not self._ensure_dir_exists(encodeFilename(temp_filename)):
return
if self.params.get('writedescription', False):
descfn = self.prepare_filename(info_dict, 'description')
if not self._ensure_dir_exists(encodeFilename(descfn)):
return
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(descfn)):
self.to_screen('[info] Video description is already present')
elif info_dict.get('description') is None:
self.report_warning('There\'s no description to write.')
else:
try:
self.to_screen('[info] Writing video description to: ' + descfn)
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
descfile.write(info_dict['description'])
except (OSError, IOError):
self.report_error('Cannot write description file ' + descfn)
return
if self._write_description('video', info_dict,
self.prepare_filename(info_dict, 'description')) is None:
return
sub_files = self._write_subtitles(info_dict, temp_filename)
if sub_files is None:
return
files_to_move.update(dict(sub_files))
thumb_files = self._write_thumbnails(
'video', info_dict, temp_filename, self.prepare_filename(info_dict, 'thumbnail'))
if thumb_files is None:
return
files_to_move.update(dict(thumb_files))
infofn = self.prepare_filename(info_dict, 'infojson')
_infojson_written = self._write_info_json('video', info_dict, infofn)
if _infojson_written:
info_dict['__infojson_filename'] = infofn
elif _infojson_written is None:
return
# Note: Annotations are deprecated
annofn = None
if self.params.get('writeannotations', False):
annofn = self.prepare_filename(info_dict, 'annotation')
if annofn:
if not self._ensure_dir_exists(encodeFilename(annofn)):
return
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(annofn)):
@ -2576,69 +2560,6 @@ class YoutubeDL(object):
self.report_error('Cannot write annotations file: ' + annofn)
return
subtitles_are_requested = any([self.params.get('writesubtitles', False),
self.params.get('writeautomaticsub')])
if subtitles_are_requested and info_dict.get('requested_subtitles'):
# subtitles download errors are already managed as troubles in relevant IE
# that way it will silently go on when used with unsupporting IE
subtitles = info_dict['requested_subtitles']
# ie = self.get_info_extractor(info_dict['extractor_key'])
for sub_lang, sub_info in subtitles.items():
sub_format = sub_info['ext']
sub_filename = subtitles_filename(temp_filename, sub_lang, sub_format, info_dict.get('ext'))
sub_filename_final = subtitles_filename(
self.prepare_filename(info_dict, 'subtitle'), sub_lang, sub_format, info_dict.get('ext'))
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(sub_filename)):
self.to_screen('[info] Video subtitle %s.%s is already present' % (sub_lang, sub_format))
sub_info['filepath'] = sub_filename
files_to_move[sub_filename] = sub_filename_final
else:
self.to_screen('[info] Writing video subtitles to: ' + sub_filename)
if sub_info.get('data') is not None:
try:
# Use newline='' to prevent conversion of newline characters
# See https://github.com/ytdl-org/youtube-dl/issues/10268
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8', newline='') as subfile:
subfile.write(sub_info['data'])
sub_info['filepath'] = sub_filename
files_to_move[sub_filename] = sub_filename_final
except (OSError, IOError):
self.report_error('Cannot write subtitles file ' + sub_filename)
return
else:
try:
sub_copy = sub_info.copy()
sub_copy.setdefault('http_headers', info_dict.get('http_headers'))
self.dl(sub_filename, sub_copy, subtitle=True)
sub_info['filepath'] = sub_filename
files_to_move[sub_filename] = sub_filename_final
except (ExtractorError, IOError, OSError, ValueError) + network_exceptions as err:
self.report_warning('Unable to download subtitle for "%s": %s' %
(sub_lang, error_to_compat_str(err)))
continue
if self.params.get('writeinfojson', False):
infofn = self.prepare_filename(info_dict, 'infojson')
if not self._ensure_dir_exists(encodeFilename(infofn)):
return
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(infofn)):
self.to_screen('[info] Video metadata is already present')
else:
self.to_screen('[info] Writing video metadata as JSON to: ' + infofn)
try:
write_json_file(self.sanitize_info(info_dict, self.params.get('clean_infojson', True)), infofn)
except (OSError, IOError):
self.report_error('Cannot write video metadata to JSON file ' + infofn)
return
info_dict['__infojson_filename'] = infofn
for thumb_ext in self._write_thumbnails(info_dict, temp_filename):
thumb_filename_temp = replace_extension(temp_filename, thumb_ext, info_dict.get('ext'))
thumb_filename = replace_extension(
self.prepare_filename(info_dict, 'thumbnail'), thumb_ext, info_dict.get('ext'))
files_to_move[thumb_filename_temp] = thumb_filename
# Write internet shortcut files
url_link = webloc_link = desktop_link = False
if self.params.get('writelink', False):
@ -3416,39 +3337,133 @@ class YoutubeDL(object):
encoding = preferredencoding()
return encoding
def _write_thumbnails(self, info_dict, filename): # return the extensions
def _write_info_json(self, label, ie_result, infofn):
''' Write infojson and returns True = written, False = skip, None = error '''
if not self.params.get('writeinfojson'):
return False
elif not infofn:
self.write_debug(f'Skipping writing {label} infojson')
return False
elif not self._ensure_dir_exists(infofn):
return None
elif not self.params.get('overwrites', True) and os.path.exists(infofn):
self.to_screen(f'[info] {label.title()} metadata is already present')
else:
self.to_screen(f'[info] Writing {label} metadata as JSON to: {infofn}')
try:
write_json_file(self.sanitize_info(ie_result, self.params.get('clean_infojson', True)), infofn)
except (OSError, IOError):
self.report_error(f'Cannot write {label} metadata to JSON file {infofn}')
return None
return True
def _write_description(self, label, ie_result, descfn):
''' Write description and returns True = written, False = skip, None = error '''
if not self.params.get('writedescription'):
return False
elif not descfn:
self.write_debug(f'Skipping writing {label} description')
return False
elif not self._ensure_dir_exists(descfn):
return None
elif not self.params.get('overwrites', True) and os.path.exists(descfn):
self.to_screen(f'[info] {label.title()} description is already present')
elif ie_result.get('description') is None:
self.report_warning(f'There\'s no {label} description to write')
return False
else:
try:
self.to_screen(f'[info] Writing {label} description to: {descfn}')
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
descfile.write(ie_result['description'])
except (OSError, IOError):
self.report_error(f'Cannot write {label} description file {descfn}')
return None
return True
def _write_subtitles(self, info_dict, filename):
''' Write subtitles to file and return list of (sub_filename, final_sub_filename); or None if error'''
ret = []
subtitles = info_dict.get('requested_subtitles')
if not subtitles or not (self.params.get('writesubtitles') or self.params.get('writeautomaticsub')):
# subtitles download errors are already managed as troubles in relevant IE
# that way it will silently go on when used with unsupporting IE
return ret
sub_filename_base = self.prepare_filename(info_dict, 'subtitle')
if not sub_filename_base:
self.to_screen('[info] Skipping writing video subtitles')
return ret
for sub_lang, sub_info in subtitles.items():
sub_format = sub_info['ext']
sub_filename = subtitles_filename(filename, sub_lang, sub_format, info_dict.get('ext'))
sub_filename_final = subtitles_filename(sub_filename_base, sub_lang, sub_format, info_dict.get('ext'))
if not self.params.get('overwrites', True) and os.path.exists(sub_filename):
self.to_screen(f'[info] Video subtitle {sub_lang}.{sub_format} is already present')
sub_info['filepath'] = sub_filename
ret.append((sub_filename, sub_filename_final))
continue
self.to_screen(f'[info] Writing video subtitles to: {sub_filename}')
if sub_info.get('data') is not None:
try:
# Use newline='' to prevent conversion of newline characters
# See https://github.com/ytdl-org/youtube-dl/issues/10268
with io.open(sub_filename, 'w', encoding='utf-8', newline='') as subfile:
subfile.write(sub_info['data'])
sub_info['filepath'] = sub_filename
ret.append((sub_filename, sub_filename_final))
continue
except (OSError, IOError):
self.report_error(f'Cannot write video subtitles file {sub_filename}')
return None
try:
sub_copy = sub_info.copy()
sub_copy.setdefault('http_headers', info_dict.get('http_headers'))
self.dl(sub_filename, sub_copy, subtitle=True)
sub_info['filepath'] = sub_filename
ret.append((sub_filename, sub_filename_final))
except (ExtractorError, IOError, OSError, ValueError) + network_exceptions as err:
self.report_warning(f'Unable to download video subtitles for {sub_lang!r}: {err}')
continue
return ret
def _write_thumbnails(self, label, info_dict, filename, thumb_filename_base=None):
''' Write thumbnails to file and return list of (thumb_filename, final_thumb_filename) '''
write_all = self.params.get('write_all_thumbnails', False)
thumbnails = []
thumbnails, ret = [], []
if write_all or self.params.get('writethumbnail', False):
thumbnails = info_dict.get('thumbnails') or []
multiple = write_all and len(thumbnails) > 1
ret = []
for t in thumbnails[::-1]:
thumb_ext = determine_ext(t['url'], 'jpg')
suffix = '%s.' % t['id'] if multiple else ''
thumb_display_id = '%s ' % t['id'] if multiple else ''
thumb_filename = replace_extension(filename, suffix + thumb_ext, info_dict.get('ext'))
if thumb_filename_base is None:
thumb_filename_base = filename
if thumbnails and not thumb_filename_base:
self.write_debug(f'Skipping writing {label} thumbnail')
return ret
if not self.params.get('overwrites', True) and os.path.exists(encodeFilename(thumb_filename)):
ret.append(suffix + thumb_ext)
for t in thumbnails[::-1]:
thumb_ext = (f'{t["id"]}.' if multiple else '') + determine_ext(t['url'], 'jpg')
thumb_display_id = f'{label} thumbnail' + (f' {t["id"]}' if multiple else '')
thumb_filename = replace_extension(filename, thumb_ext, info_dict.get('ext'))
thumb_filename_final = replace_extension(thumb_filename_base, thumb_ext, info_dict.get('ext'))
if not self.params.get('overwrites', True) and os.path.exists(thumb_filename):
ret.append((thumb_filename, thumb_filename_final))
t['filepath'] = thumb_filename
self.to_screen('[%s] %s: Thumbnail %sis already present' %
(info_dict['extractor'], info_dict['id'], thumb_display_id))
self.to_screen(f'[info] {thumb_display_id.title()} is already present')
else:
self.to_screen('[%s] %s: Downloading thumbnail %s ...' %
(info_dict['extractor'], info_dict['id'], thumb_display_id))
self.to_screen(f'[info] Downloading {thumb_display_id} ...')
try:
uf = self.urlopen(t['url'])
self.to_screen(f'[info] Writing {thumb_display_id} to: {thumb_filename}')
with open(encodeFilename(thumb_filename), 'wb') as thumbf:
shutil.copyfileobj(uf, thumbf)
ret.append(suffix + thumb_ext)
self.to_screen('[%s] %s: Writing thumbnail %sto: %s' %
(info_dict['extractor'], info_dict['id'], thumb_display_id, thumb_filename))
ret.append((thumb_filename, thumb_filename_final))
t['filepath'] = thumb_filename
except network_exceptions as err:
self.report_warning('Unable to download thumbnail "%s": %s' %
(t['url'], error_to_compat_str(err)))
self.report_warning(f'Unable to download {thumb_display_id}: {err}')
if ret and not write_all:
break
return ret

1
yt_dlp/__init__.py
View File

@ -535,6 +535,7 @@ def _real_main(argv=None):
})
if not already_have_thumbnail:
opts.writethumbnail = True
opts.outtmpl['pl_thumbnail'] = ''
if opts.split_chapters:
postprocessors.append({
'key': 'FFmpegSplitChapters',