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[ffmpeg] Download and merge in a single step if possible
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pukkandan
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8d68ab98a7
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18e674b4f6
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@ -130,6 +130,7 @@ ### Differences in default behavior
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* Youtube live chat (if available) is considered as a subtitle. Use `--sub-langs all,-live_chat` to download all subtitles except live chat. You can also use `--compat-options no-live-chat` to prevent live chat from downloading
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* Youtube channel URLs are automatically redirected to `/video`. Append a `/featured` to the URL to download only the videos in the home page. If the channel does not have a videos tab, we try to download the equivalent `UU` playlist instead. Also, `/live` URLs raise an error if there are no live videos instead of silently downloading the entire channel. You may use `--compat-options no-youtube-channel-redirect` to revert all these redirections
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* Unavailable videos are also listed for youtube playlists. Use `--compat-options no-youtube-unavailable-videos` to remove this
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* If `ffmpeg` is used as the downloader, the downloading and merging of formats happen in a single step when possible. Use `--compat-options no-direct-merge` to revert this
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For ease of use, a few more compat options are available:
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* `--compat-options all`: Use all compat options
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@ -387,8 +387,9 @@ class YoutubeDL(object):
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if True, otherwise use ffmpeg/avconv if False, otherwise
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use downloader suggested by extractor if None.
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compat_opts: Compatibility options. See "Differences in default behavior".
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Note that only format-sort, format-spec, no-live-chat, no-attach-info-json
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playlist-index, list-formats, no-youtube-channel-redirect
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Note that only format-sort, format-spec, no-live-chat,
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no-attach-info-json, playlist-index, list-formats,
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no-direct-merge, no-youtube-channel-redirect,
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and no-youtube-unavailable-videos works when used via the API
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The following parameters are not used by YoutubeDL itself, they are used by
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@ -2294,7 +2295,8 @@ def dl(self, name, info, subtitle=False, test=False):
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if not test:
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for ph in self._progress_hooks:
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fd.add_progress_hook(ph)
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self.write_debug('Invoking downloader on %r' % info.get('url'))
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urls = '", "'.join([f['url'] for f in info.get('requested_formats', [])] or [info['url']])
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self.write_debug('Invoking downloader on "%s"' % urls)
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new_info = dict(info)
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if new_info.get('http_headers') is None:
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new_info['http_headers'] = self._calc_headers(new_info)
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@ -2533,17 +2535,6 @@ def existing_file(*filepaths):
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success = True
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if info_dict.get('requested_formats') is not None:
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downloaded = []
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merger = FFmpegMergerPP(self)
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if self.params.get('allow_unplayable_formats'):
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self.report_warning(
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'You have requested merging of multiple formats '
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'while also allowing unplayable formats to be downloaded. '
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'The formats won\'t be merged to prevent data corruption.')
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elif not merger.available:
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self.report_warning(
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'You have requested merging of multiple formats but ffmpeg is not installed. '
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'The formats won\'t be merged.')
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def compatible_formats(formats):
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# TODO: some formats actually allow this (mkv, webm, ogg, mp4), but not all of them.
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@ -2591,9 +2582,39 @@ def correct_ext(filename):
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temp_filename = correct_ext(temp_filename)
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dl_filename = existing_file(full_filename, temp_filename)
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info_dict['__real_download'] = False
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_protocols = set(determine_protocol(f) for f in requested_formats)
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if len(_protocols) == 1:
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info_dict['protocol'] = _protocols.pop()
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directly_mergable = (
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'no-direct-merge' not in self.params.get('compat_opts', [])
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and info_dict.get('protocol') is not None # All requested formats have same protocol
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and not self.params.get('allow_unplayable_formats')
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and get_suitable_downloader(info_dict, self.params).__name__ == 'FFmpegFD')
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if directly_mergable:
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info_dict['url'] = requested_formats[0]['url']
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# Treat it as a single download
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dl_filename = existing_file(full_filename, temp_filename)
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if dl_filename is None:
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success, real_download = self.dl(temp_filename, info_dict)
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info_dict['__real_download'] = real_download
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else:
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downloaded = []
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merger = FFmpegMergerPP(self)
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if self.params.get('allow_unplayable_formats'):
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self.report_warning(
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'You have requested merging of multiple formats '
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'while also allowing unplayable formats to be downloaded. '
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'The formats won\'t be merged to prevent data corruption.')
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elif not merger.available:
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self.report_warning(
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'You have requested merging of multiple formats but ffmpeg is not installed. '
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'The formats won\'t be merged.')
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if dl_filename is None:
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for f in requested_formats:
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new_info = dict(info_dict)
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del new_info['requested_formats']
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new_info.update(f)
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fname = prepend_extension(
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self.prepare_filename(new_info, 'temp'),
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@ -264,8 +264,8 @@ def parse_compat_opts():
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return parsed_compat_opts
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all_compat_opts = [
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'filename', 'format-sort', 'abort-on-error', 'format-spec', 'multistreams',
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'no-playlist-metafiles', 'no-live-chat', 'playlist-index', 'list-formats',
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'filename', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
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'multistreams', 'no-live-chat', 'playlist-index', 'list-formats', 'no-direct-merge',
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'no-youtube-channel-redirect', 'no-youtube-unavailable-videos', 'no-attach-info-json',
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]
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compat_opts = parse_compat_opts()
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@ -346,7 +346,7 @@ def available(cls, path=None):
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return FFmpegPostProcessor().available
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def _call_downloader(self, tmpfilename, info_dict):
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url = info_dict['url']
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urls = [f['url'] for f in info_dict.get('requested_formats', [])] or [info_dict['url']]
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ffpp = FFmpegPostProcessor(downloader=self)
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if not ffpp.available:
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self.report_error('m3u8 download detected but ffmpeg could not be found. Please install')
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@ -378,7 +378,7 @@ def _call_downloader(self, tmpfilename, info_dict):
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# if end_time:
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# args += ['-t', compat_str(end_time - start_time)]
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if info_dict.get('http_headers') is not None and re.match(r'^https?://', url):
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if info_dict.get('http_headers') is not None and re.match(r'^https?://', urls[0]):
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# Trailing \r\n after each HTTP header is important to prevent warning from ffmpeg/avconv:
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# [http @ 00000000003d2fa0] No trailing CRLF found in HTTP header.
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headers = handle_youtubedl_headers(info_dict['http_headers'])
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@ -436,7 +436,15 @@ def _call_downloader(self, tmpfilename, info_dict):
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elif isinstance(conn, compat_str):
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args += ['-rtmp_conn', conn]
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args += ['-i', url, '-c', 'copy']
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for url in urls:
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args += ['-i', url]
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args += ['-c', 'copy']
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if info_dict.get('requested_formats'):
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for (i, fmt) in enumerate(info_dict['requested_formats']):
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if fmt.get('acodec') != 'none':
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args.extend(['-map', '%d:a:0' % i])
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if fmt.get('vcodec') != 'none':
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args.extend(['-map', '%d:v:0' % i])
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if self.params.get('test', False):
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args += ['-fs', compat_str(self._TEST_FILE_SIZE)]
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