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Diffstat (limited to '')
| -rw-r--r-- | yt_dlp/postprocessor/ffmpeg.py | 1192 |
1 files changed, 1192 insertions, 0 deletions
diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py new file mode 100644 index 0000000..7d7f3f0 --- /dev/null +++ b/yt_dlp/postprocessor/ffmpeg.py @@ -0,0 +1,1192 @@ +import collections +import contextvars +import itertools +import json +import os +import re +import subprocess +import time + +from .common import PostProcessor +from ..compat import functools, imghdr +from ..utils import ( + MEDIA_EXTENSIONS, + ISO639Utils, + Popen, + PostProcessingError, + _get_exe_version_output, + deprecation_warning, + detect_exe_version, + determine_ext, + dfxp2srt, + encodeArgument, + encodeFilename, + filter_dict, + float_or_none, + is_outdated_version, + orderedSet, + prepend_extension, + replace_extension, + shell_quote, + traverse_obj, + variadic, + write_json_file, +) + +EXT_TO_OUT_FORMATS = { + 'aac': 'adts', + 'flac': 'flac', + 'm4a': 'ipod', + 'mka': 'matroska', + 'mkv': 'matroska', + 'mpg': 'mpeg', + 'ogv': 'ogg', + 'ts': 'mpegts', + 'wma': 'asf', + 'wmv': 'asf', + 'weba': 'webm', + 'vtt': 'webvtt', +} +ACODECS = { + # name: (ext, encoder, opts) + 'mp3': ('mp3', 'libmp3lame', ()), + 'aac': ('m4a', 'aac', ('-f', 'adts')), + 'm4a': ('m4a', 'aac', ('-bsf:a', 'aac_adtstoasc')), + 'opus': ('opus', 'libopus', ()), + 'vorbis': ('ogg', 'libvorbis', ()), + 'flac': ('flac', 'flac', ()), + 'alac': ('m4a', None, ('-acodec', 'alac')), + 'wav': ('wav', None, ('-f', 'wav')), +} + + +def create_mapping_re(supported): + return re.compile(r'{0}(?:/{0})*$'.format(r'(?:\s*\w+\s*>)?\s*(?:%s)\s*' % '|'.join(supported))) + + +def resolve_mapping(source, mapping): + """ + Get corresponding item from a mapping string like 'A>B/C>D/E' + @returns (target, error_message) + """ + for pair in mapping.lower().split('/'): + kv = pair.split('>', 1) + if len(kv) == 1 or kv[0].strip() == source: + target = kv[-1].strip() + if target == source: + return target, f'already is in target format {source}' + return target, None + return None, f'could not find a mapping for {source}' + + +class FFmpegPostProcessorError(PostProcessingError): + pass + + +class FFmpegPostProcessor(PostProcessor): + _ffmpeg_location = contextvars.ContextVar('ffmpeg_location', default=None) + + def __init__(self, downloader=None): + PostProcessor.__init__(self, downloader) + self._prefer_ffmpeg = self.get_param('prefer_ffmpeg', True) + self._paths = self._determine_executables() + + @staticmethod + def get_versions_and_features(downloader=None): + pp = FFmpegPostProcessor(downloader) + return pp._versions, pp._features + + @staticmethod + def get_versions(downloader=None): + return FFmpegPostProcessor.get_versions_and_features(downloader)[0] + + _ffmpeg_to_avconv = {'ffmpeg': 'avconv', 'ffprobe': 'avprobe'} + + def _determine_executables(self): + programs = [*self._ffmpeg_to_avconv.keys(), *self._ffmpeg_to_avconv.values()] + + location = self.get_param('ffmpeg_location', self._ffmpeg_location.get()) + if location is None: + return {p: p for p in programs} + + if not os.path.exists(location): + self.report_warning( + f'ffmpeg-location {location} does not exist! Continuing without ffmpeg', only_once=True) + return {} + elif os.path.isdir(location): + dirname, basename, filename = location, None, None + else: + filename = os.path.basename(location) + basename = next((p for p in programs if p in filename), 'ffmpeg') + dirname = os.path.dirname(os.path.abspath(location)) + if basename in self._ffmpeg_to_avconv.keys(): + self._prefer_ffmpeg = True + + paths = {p: os.path.join(dirname, p) for p in programs} + if basename and basename in filename: + for p in programs: + path = os.path.join(dirname, filename.replace(basename, p)) + if os.path.exists(path): + paths[p] = path + if basename: + paths[basename] = location + return paths + + _version_cache, _features_cache = {None: None}, {} + + def _get_ffmpeg_version(self, prog): + path = self._paths.get(prog) + if path in self._version_cache: + return self._version_cache[path], self._features_cache.get(path, {}) + out = _get_exe_version_output(path, ['-bsfs']) + ver = detect_exe_version(out) if out else False + if ver: + regexs = [ + r'(?:\d+:)?([0-9.]+)-[0-9]+ubuntu[0-9.]+$', # Ubuntu, see [1] + r'n([0-9.]+)$', # Arch Linux + # 1. http://www.ducea.com/2006/06/17/ubuntu-package-version-naming-explanation/ + ] + for regex in regexs: + mobj = re.match(regex, ver) + if mobj: + ver = mobj.group(1) + self._version_cache[path] = ver + if prog != 'ffmpeg' or not out: + return ver, {} + + mobj = re.search(r'(?m)^\s+libavformat\s+(?:[0-9. ]+)\s+/\s+(?P<runtime>[0-9. ]+)', out) + lavf_runtime_version = mobj.group('runtime').replace(' ', '') if mobj else None + self._features_cache[path] = features = { + 'fdk': '--enable-libfdk-aac' in out, + 'setts': 'setts' in out.splitlines(), + 'needs_adtstoasc': is_outdated_version(lavf_runtime_version, '57.56.100', False), + } + return ver, features + + @property + def _versions(self): + return filter_dict({self.basename: self._version, self.probe_basename: self._probe_version}) + + @functools.cached_property + def basename(self): + self._version # run property + return self.basename + + @functools.cached_property + def probe_basename(self): + self._probe_version # run property + return self.probe_basename + + def _get_version(self, kind): + executables = (kind, ) + if not self._prefer_ffmpeg: + executables = (kind, self._ffmpeg_to_avconv[kind]) + basename, version, features = next(filter( + lambda x: x[1], ((p, *self._get_ffmpeg_version(p)) for p in executables)), (None, None, {})) + if kind == 'ffmpeg': + self.basename, self._features = basename, features + else: + self.probe_basename = basename + if basename == self._ffmpeg_to_avconv[kind]: + self.deprecated_feature(f'Support for {self._ffmpeg_to_avconv[kind]} is deprecated and ' + f'may be removed in a future version. Use {kind} instead') + return version + + @functools.cached_property + def _version(self): + return self._get_version('ffmpeg') + + @functools.cached_property + def _probe_version(self): + return self._get_version('ffprobe') + + @property + def available(self): + return self.basename is not None + + @property + def executable(self): + return self._paths.get(self.basename) + + @property + def probe_available(self): + return self.probe_basename is not None + + @property + def probe_executable(self): + return self._paths.get(self.probe_basename) + + @staticmethod + def stream_copy_opts(copy=True, *, ext=None): + yield from ('-map', '0') + # Don't copy Apple TV chapters track, bin_data + # See https://github.com/yt-dlp/yt-dlp/issues/2, #19042, #19024, https://trac.ffmpeg.org/ticket/6016 + yield from ('-dn', '-ignore_unknown') + if copy: + yield from ('-c', 'copy') + if ext in ('mp4', 'mov', 'm4a'): + yield from ('-c:s', 'mov_text') + + def check_version(self): + if not self.available: + raise FFmpegPostProcessorError('ffmpeg not found. Please install or provide the path using --ffmpeg-location') + + required_version = '10-0' if self.basename == 'avconv' else '1.0' + if is_outdated_version(self._version, required_version): + self.report_warning(f'Your copy of {self.basename} is outdated, update {self.basename} ' + f'to version {required_version} or newer if you encounter any errors') + + def get_audio_codec(self, path): + if not self.probe_available and not self.available: + raise PostProcessingError('ffprobe and ffmpeg not found. Please install or provide the path using --ffmpeg-location') + try: + if self.probe_available: + cmd = [ + encodeFilename(self.probe_executable, True), + encodeArgument('-show_streams')] + else: + cmd = [ + encodeFilename(self.executable, True), + encodeArgument('-i')] + cmd.append(encodeFilename(self._ffmpeg_filename_argument(path), True)) + self.write_debug(f'{self.basename} command line: {shell_quote(cmd)}') + stdout, stderr, returncode = Popen.run( + cmd, text=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + if returncode != (0 if self.probe_available else 1): + return None + except OSError: + return None + output = stdout if self.probe_available else stderr + if self.probe_available: + audio_codec = None + for line in output.split('\n'): + if line.startswith('codec_name='): + audio_codec = line.split('=')[1].strip() + elif line.strip() == 'codec_type=audio' and audio_codec is not None: + return audio_codec + else: + # Stream #FILE_INDEX:STREAM_INDEX[STREAM_ID](LANGUAGE): CODEC_TYPE: CODEC_NAME + mobj = re.search( + r'Stream\s*#\d+:\d+(?:\[0x[0-9a-f]+\])?(?:\([a-z]{3}\))?:\s*Audio:\s*([0-9a-z]+)', + output) + if mobj: + return mobj.group(1) + return None + + def get_metadata_object(self, path, opts=[]): + if self.probe_basename != 'ffprobe': + if self.probe_available: + self.report_warning('Only ffprobe is supported for metadata extraction') + raise PostProcessingError('ffprobe not found. Please install or provide the path using --ffmpeg-location') + self.check_version() + + cmd = [ + encodeFilename(self.probe_executable, True), + encodeArgument('-hide_banner'), + encodeArgument('-show_format'), + encodeArgument('-show_streams'), + encodeArgument('-print_format'), + encodeArgument('json'), + ] + + cmd += opts + cmd.append(self._ffmpeg_filename_argument(path)) + self.write_debug(f'ffprobe command line: {shell_quote(cmd)}') + stdout, _, _ = Popen.run(cmd, text=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) + return json.loads(stdout) + + def get_stream_number(self, path, keys, value): + streams = self.get_metadata_object(path)['streams'] + num = next( + (i for i, stream in enumerate(streams) if traverse_obj(stream, keys, casesense=False) == value), + None) + return num, len(streams) + + def _fixup_chapters(self, info): + last_chapter = traverse_obj(info, ('chapters', -1)) + if last_chapter and not last_chapter.get('end_time'): + last_chapter['end_time'] = self._get_real_video_duration(info['filepath']) + + def _get_real_video_duration(self, filepath, fatal=True): + try: + duration = float_or_none( + traverse_obj(self.get_metadata_object(filepath), ('format', 'duration'))) + if not duration: + raise PostProcessingError('ffprobe returned empty duration') + return duration + except PostProcessingError as e: + if fatal: + raise PostProcessingError(f'Unable to determine video duration: {e.msg}') + + def _duration_mismatch(self, d1, d2, tolerance=2): + if not d1 or not d2: + return None + # The duration is often only known to nearest second. So there can be <1sec disparity natually. + # Further excuse an additional <1sec difference. + return abs(d1 - d2) > tolerance + + def run_ffmpeg_multiple_files(self, input_paths, out_path, opts, **kwargs): + return self.real_run_ffmpeg( + [(path, []) for path in input_paths], + [(out_path, opts)], **kwargs) + + def real_run_ffmpeg(self, input_path_opts, output_path_opts, *, expected_retcodes=(0,)): + self.check_version() + + oldest_mtime = min( + os.stat(encodeFilename(path)).st_mtime for path, _ in input_path_opts if path) + + cmd = [encodeFilename(self.executable, True), encodeArgument('-y')] + # avconv does not have repeat option + if self.basename == 'ffmpeg': + cmd += [encodeArgument('-loglevel'), encodeArgument('repeat+info')] + + def make_args(file, args, name, number): + keys = ['_%s%d' % (name, number), '_%s' % name] + if name == 'o': + args += ['-movflags', '+faststart'] + if number == 1: + keys.append('') + args += self._configuration_args(self.basename, keys) + if name == 'i': + args.append('-i') + return ( + [encodeArgument(arg) for arg in args] + + [encodeFilename(self._ffmpeg_filename_argument(file), True)]) + + for arg_type, path_opts in (('i', input_path_opts), ('o', output_path_opts)): + cmd += itertools.chain.from_iterable( + make_args(path, list(opts), arg_type, i + 1) + for i, (path, opts) in enumerate(path_opts) if path) + + self.write_debug('ffmpeg command line: %s' % shell_quote(cmd)) + _, stderr, returncode = Popen.run( + cmd, text=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) + if returncode not in variadic(expected_retcodes): + self.write_debug(stderr) + raise FFmpegPostProcessorError(stderr.strip().splitlines()[-1]) + for out_path, _ in output_path_opts: + if out_path: + self.try_utime(out_path, oldest_mtime, oldest_mtime) + return stderr + + def run_ffmpeg(self, path, out_path, opts, **kwargs): + return self.run_ffmpeg_multiple_files([path], out_path, opts, **kwargs) + + @staticmethod + def _ffmpeg_filename_argument(fn): + # Always use 'file:' because the filename may contain ':' (ffmpeg + # interprets that as a protocol) or can start with '-' (-- is broken in + # ffmpeg, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details) + # Also leave '-' intact in order not to break streaming to stdout. + if fn.startswith(('http://', 'https://')): + return fn + return 'file:' + fn if fn != '-' else fn + + @staticmethod + def _quote_for_ffmpeg(string): + # See https://ffmpeg.org/ffmpeg-utils.html#toc-Quoting-and-escaping + # A sequence of '' produces '\'''\''; + # final replace removes the empty '' between \' \'. + string = string.replace("'", r"'\''").replace("'''", "'") + # Handle potential ' at string boundaries. + string = string[1:] if string[0] == "'" else "'" + string + return string[:-1] if string[-1] == "'" else string + "'" + + def force_keyframes(self, filename, timestamps): + timestamps = orderedSet(timestamps) + if timestamps[0] == 0: + timestamps = timestamps[1:] + keyframe_file = prepend_extension(filename, 'keyframes.temp') + self.to_screen(f'Re-encoding "{filename}" with appropriate keyframes') + self.run_ffmpeg(filename, keyframe_file, [ + *self.stream_copy_opts(False, ext=determine_ext(filename)), + '-force_key_frames', ','.join(f'{t:.6f}' for t in timestamps)]) + return keyframe_file + + def concat_files(self, in_files, out_file, concat_opts=None): + """ + Use concat demuxer to concatenate multiple files having identical streams. + + Only inpoint, outpoint, and duration concat options are supported. + See https://ffmpeg.org/ffmpeg-formats.html#concat-1 for details + """ + concat_file = f'{out_file}.concat' + self.write_debug(f'Writing concat spec to {concat_file}') + with open(concat_file, 'w', encoding='utf-8') as f: + f.writelines(self._concat_spec(in_files, concat_opts)) + + out_flags = list(self.stream_copy_opts(ext=determine_ext(out_file))) + + self.real_run_ffmpeg( + [(concat_file, ['-hide_banner', '-nostdin', '-f', 'concat', '-safe', '0'])], + [(out_file, out_flags)]) + self._delete_downloaded_files(concat_file) + + @classmethod + def _concat_spec(cls, in_files, concat_opts=None): + if concat_opts is None: + concat_opts = [{}] * len(in_files) + yield 'ffconcat version 1.0\n' + for file, opts in zip(in_files, concat_opts): + yield f'file {cls._quote_for_ffmpeg(cls._ffmpeg_filename_argument(file))}\n' + # Iterate explicitly to yield the following directives in order, ignoring the rest. + for directive in 'inpoint', 'outpoint', 'duration': + if directive in opts: + yield f'{directive} {opts[directive]}\n' + + +class FFmpegExtractAudioPP(FFmpegPostProcessor): + COMMON_AUDIO_EXTS = MEDIA_EXTENSIONS.common_audio + ('wma', ) + SUPPORTED_EXTS = tuple(ACODECS.keys()) + FORMAT_RE = create_mapping_re(('best', *SUPPORTED_EXTS)) + + def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, nopostoverwrites=False): + FFmpegPostProcessor.__init__(self, downloader) + self.mapping = preferredcodec or 'best' + self._preferredquality = float_or_none(preferredquality) + self._nopostoverwrites = nopostoverwrites + + def _quality_args(self, codec): + if self._preferredquality is None: + return [] + elif self._preferredquality > 10: + return ['-b:a', f'{self._preferredquality}k'] + + limits = { + 'libmp3lame': (10, 0), + 'libvorbis': (0, 10), + # FFmpeg's AAC encoder does not have an upper limit for the value of -q:a. + # Experimentally, with values over 4, bitrate changes were minimal or non-existent + 'aac': (0.1, 4), + 'libfdk_aac': (1, 5), + }.get(codec) + if not limits: + return [] + + q = limits[1] + (limits[0] - limits[1]) * (self._preferredquality / 10) + if codec == 'libfdk_aac': + return ['-vbr', f'{int(q)}'] + return ['-q:a', f'{q}'] + + def run_ffmpeg(self, path, out_path, codec, more_opts): + if codec is None: + acodec_opts = [] + else: + acodec_opts = ['-acodec', codec] + opts = ['-vn'] + acodec_opts + more_opts + try: + FFmpegPostProcessor.run_ffmpeg(self, path, out_path, opts) + except FFmpegPostProcessorError as err: + raise PostProcessingError(f'audio conversion failed: {err.msg}') + + @PostProcessor._restrict_to(images=False) + def run(self, information): + orig_path = path = information['filepath'] + target_format, _skip_msg = resolve_mapping(information['ext'], self.mapping) + if target_format == 'best' and information['ext'] in self.COMMON_AUDIO_EXTS: + target_format, _skip_msg = None, 'the file is already in a common audio format' + if not target_format: + self.to_screen(f'Not converting audio {orig_path}; {_skip_msg}') + return [], information + + filecodec = self.get_audio_codec(path) + if filecodec is None: + raise PostProcessingError('WARNING: unable to obtain file audio codec with ffprobe') + + if filecodec == 'aac' and target_format in ('m4a', 'best'): + # Lossless, but in another container + extension, _, more_opts, acodec = *ACODECS['m4a'], 'copy' + elif target_format == 'best' or target_format == filecodec: + # Lossless if possible + try: + extension, _, more_opts, acodec = *ACODECS[filecodec], 'copy' + except KeyError: + extension, acodec, more_opts = ACODECS['mp3'] + else: + # We convert the audio (lossy if codec is lossy) + extension, acodec, more_opts = ACODECS[target_format] + if acodec == 'aac' and self._features.get('fdk'): + acodec, more_opts = 'libfdk_aac', [] + + more_opts = list(more_opts) + if acodec != 'copy': + more_opts = self._quality_args(acodec) + + temp_path = new_path = replace_extension(path, extension, information['ext']) + + if new_path == path: + if acodec == 'copy': + self.to_screen(f'Not converting audio {orig_path}; file is already in target format {target_format}') + return [], information + orig_path = prepend_extension(path, 'orig') + temp_path = prepend_extension(path, 'temp') + if (self._nopostoverwrites and os.path.exists(encodeFilename(new_path)) + and os.path.exists(encodeFilename(orig_path))): + self.to_screen('Post-process file %s exists, skipping' % new_path) + return [], information + + self.to_screen(f'Destination: {new_path}') + self.run_ffmpeg(path, temp_path, acodec, more_opts) + + os.replace(path, orig_path) + os.replace(temp_path, new_path) + information['filepath'] = new_path + information['ext'] = extension + + # Try to update the date time for extracted audio file. + if information.get('filetime') is not None: + self.try_utime( + new_path, time.time(), information['filetime'], errnote='Cannot update utime of audio file') + + return [orig_path], information + + +class FFmpegVideoConvertorPP(FFmpegPostProcessor): + SUPPORTED_EXTS = ( + *sorted((*MEDIA_EXTENSIONS.common_video, 'gif')), + *sorted((*MEDIA_EXTENSIONS.common_audio, 'aac', 'vorbis')), + ) + FORMAT_RE = create_mapping_re(SUPPORTED_EXTS) + _ACTION = 'converting' + + def __init__(self, downloader=None, preferedformat=None): + super().__init__(downloader) + self.mapping = preferedformat + + @staticmethod + def _options(target_ext): + yield from FFmpegPostProcessor.stream_copy_opts(False) + if target_ext == 'avi': + yield from ('-c:v', 'libxvid', '-vtag', 'XVID') + + @PostProcessor._restrict_to(images=False) + def run(self, info): + filename, source_ext = info['filepath'], info['ext'].lower() + target_ext, _skip_msg = resolve_mapping(source_ext, self.mapping) + if _skip_msg: + self.to_screen(f'Not {self._ACTION} media file "{filename}"; {_skip_msg}') + return [], info + + outpath = replace_extension(filename, target_ext, source_ext) + self.to_screen(f'{self._ACTION.title()} video from {source_ext} to {target_ext}; Destination: {outpath}') + self.run_ffmpeg(filename, outpath, self._options(target_ext)) + + info['filepath'] = outpath + info['format'] = info['ext'] = target_ext + return [filename], info + + +class FFmpegVideoRemuxerPP(FFmpegVideoConvertorPP): + _ACTION = 'remuxing' + + @staticmethod + def _options(target_ext): + return FFmpegPostProcessor.stream_copy_opts() + + +class FFmpegEmbedSubtitlePP(FFmpegPostProcessor): + SUPPORTED_EXTS = ('mp4', 'mov', 'm4a', 'webm', 'mkv', 'mka') + + def __init__(self, downloader=None, already_have_subtitle=False): + super().__init__(downloader) + self._already_have_subtitle = already_have_subtitle + + @PostProcessor._restrict_to(images=False) + def run(self, info): + if info['ext'] not in self.SUPPORTED_EXTS: + self.to_screen(f'Subtitles can only be embedded in {", ".join(self.SUPPORTED_EXTS)} files') + return [], info + subtitles = info.get('requested_subtitles') + if not subtitles: + self.to_screen('There aren\'t any subtitles to embed') + return [], info + + filename = info['filepath'] + + # Disabled temporarily. There needs to be a way to override this + # in case of duration actually mismatching in extractor + # See: https://github.com/yt-dlp/yt-dlp/issues/1870, https://github.com/yt-dlp/yt-dlp/issues/1385 + ''' + if info.get('duration') and not info.get('__real_download') and self._duration_mismatch( + self._get_real_video_duration(filename, False), info['duration']): + self.to_screen(f'Skipping {self.pp_key()} since the real and expected durations mismatch') + return [], info + ''' + + ext = info['ext'] + sub_langs, sub_names, sub_filenames = [], [], [] + webm_vtt_warn = False + mp4_ass_warn = False + + for lang, sub_info in subtitles.items(): + if not os.path.exists(sub_info.get('filepath', '')): + self.report_warning(f'Skipping embedding {lang} subtitle because the file is missing') + continue + sub_ext = sub_info['ext'] + if sub_ext == 'json': + self.report_warning('JSON subtitles cannot be embedded') + elif ext != 'webm' or ext == 'webm' and sub_ext == 'vtt': + sub_langs.append(lang) + sub_names.append(sub_info.get('name')) + sub_filenames.append(sub_info['filepath']) + else: + if not webm_vtt_warn and ext == 'webm' and sub_ext != 'vtt': + webm_vtt_warn = True + self.report_warning('Only WebVTT subtitles can be embedded in webm files') + if not mp4_ass_warn and ext == 'mp4' and sub_ext == 'ass': + mp4_ass_warn = True + self.report_warning('ASS subtitles cannot be properly embedded in mp4 files; expect issues') + + if not sub_langs: + return [], info + + input_files = [filename] + sub_filenames + + opts = [ + *self.stream_copy_opts(ext=info['ext']), + # Don't copy the existing subtitles, we may be running the + # postprocessor a second time + '-map', '-0:s', + ] + for i, (lang, name) in enumerate(zip(sub_langs, sub_names)): + opts.extend(['-map', '%d:0' % (i + 1)]) + lang_code = ISO639Utils.short2long(lang) or lang + opts.extend(['-metadata:s:s:%d' % i, 'language=%s' % lang_code]) + if name: + opts.extend(['-metadata:s:s:%d' % i, 'handler_name=%s' % name, + '-metadata:s:s:%d' % i, 'title=%s' % name]) + + temp_filename = prepend_extension(filename, 'temp') + self.to_screen('Embedding subtitles in "%s"' % filename) + self.run_ffmpeg_multiple_files(input_files, temp_filename, opts) + os.replace(temp_filename, filename) + + files_to_delete = [] if self._already_have_subtitle else sub_filenames + return files_to_delete, info + + +class FFmpegMetadataPP(FFmpegPostProcessor): + + def __init__(self, downloader, add_metadata=True, add_chapters=True, add_infojson='if_exists'): + FFmpegPostProcessor.__init__(self, downloader) + self._add_metadata = add_metadata + self._add_chapters = add_chapters + self._add_infojson = add_infojson + + @staticmethod + def _options(target_ext): + audio_only = target_ext == 'm4a' + yield from FFmpegPostProcessor.stream_copy_opts(not audio_only) + if audio_only: + yield from ('-vn', '-acodec', 'copy') + + @PostProcessor._restrict_to(images=False) + def run(self, info): + self._fixup_chapters(info) + filename, metadata_filename = info['filepath'], None + files_to_delete, options = [], [] + if self._add_chapters and info.get('chapters'): + metadata_filename = replace_extension(filename, 'meta') + options.extend(self._get_chapter_opts(info['chapters'], metadata_filename)) + files_to_delete.append(metadata_filename) + if self._add_metadata: + options.extend(self._get_metadata_opts(info)) + + if self._add_infojson: + if info['ext'] in ('mkv', 'mka'): + infojson_filename = info.get('infojson_filename') + options.extend(self._get_infojson_opts(info, infojson_filename)) + if not infojson_filename: + files_to_delete.append(info.get('infojson_filename')) + elif self._add_infojson is True: + self.to_screen('The info-json can only be attached to mkv/mka files') + + if not options: + self.to_screen('There isn\'t any metadata to add') + return [], info + + temp_filename = prepend_extension(filename, 'temp') + self.to_screen('Adding metadata to "%s"' % filename) + self.run_ffmpeg_multiple_files( + (filename, metadata_filename), temp_filename, + itertools.chain(self._options(info['ext']), *options)) + self._delete_downloaded_files(*files_to_delete) + os.replace(temp_filename, filename) + return [], info + + @staticmethod + def _get_chapter_opts(chapters, metadata_filename): + with open(metadata_filename, 'w', encoding='utf-8') as f: + def ffmpeg_escape(text): + return re.sub(r'([\\=;#\n])', r'\\\1', text) + + metadata_file_content = ';FFMETADATA1\n' + for chapter in chapters: + metadata_file_content += '[CHAPTER]\nTIMEBASE=1/1000\n' + metadata_file_content += 'START=%d\n' % (chapter['start_time'] * 1000) + metadata_file_content += 'END=%d\n' % (chapter['end_time'] * 1000) + chapter_title = chapter.get('title') + if chapter_title: + metadata_file_content += 'title=%s\n' % ffmpeg_escape(chapter_title) + f.write(metadata_file_content) + yield ('-map_metadata', '1') + + def _get_metadata_opts(self, info): + meta_prefix = 'meta' + metadata = collections.defaultdict(dict) + + def add(meta_list, info_list=None): + value = next(( + info[key] for key in [f'{meta_prefix}_'] + list(variadic(info_list or meta_list)) + if info.get(key) is not None), None) + if value not in ('', None): + value = ', '.join(map(str, variadic(value))) + value = value.replace('\0', '') # nul character cannot be passed in command line + metadata['common'].update({meta_f: value for meta_f in variadic(meta_list)}) + + # Info on media metadata/metadata supported by ffmpeg: + # https://wiki.multimedia.cx/index.php/FFmpeg_Metadata + # https://kdenlive.org/en/project/adding-meta-data-to-mp4-video/ + # https://kodi.wiki/view/Video_file_tagging + + add('title', ('track', 'title')) + add('date', 'upload_date') + add(('description', 'synopsis'), 'description') + add(('purl', 'comment'), 'webpage_url') + add('track', 'track_number') + add('artist', ('artist', 'artists', 'creator', 'creators', 'uploader', 'uploader_id')) + add('composer', ('composer', 'composers')) + add('genre', ('genre', 'genres')) + add('album') + add('album_artist', ('album_artist', 'album_artists')) + add('disc', 'disc_number') + add('show', 'series') + add('season_number') + add('episode_id', ('episode', 'episode_id')) + add('episode_sort', 'episode_number') + if 'embed-metadata' in self.get_param('compat_opts', []): + add('comment', 'description') + metadata['common'].pop('synopsis', None) + + meta_regex = rf'{re.escape(meta_prefix)}(?P<i>\d+)?_(?P<key>.+)' + for key, value in info.items(): + mobj = re.fullmatch(meta_regex, key) + if value is not None and mobj: + metadata[mobj.group('i') or 'common'][mobj.group('key')] = value.replace('\0', '') + + # Write id3v1 metadata also since Windows Explorer can't handle id3v2 tags + yield ('-write_id3v1', '1') + + for name, value in metadata['common'].items(): + yield ('-metadata', f'{name}={value}') + + stream_idx = 0 + for fmt in info.get('requested_formats') or [info]: + stream_count = 2 if 'none' not in (fmt.get('vcodec'), fmt.get('acodec')) else 1 + lang = ISO639Utils.short2long(fmt.get('language') or '') or fmt.get('language') + for i in range(stream_idx, stream_idx + stream_count): + if lang: + metadata[str(i)].setdefault('language', lang) + for name, value in metadata[str(i)].items(): + yield (f'-metadata:s:{i}', f'{name}={value}') + stream_idx += stream_count + + def _get_infojson_opts(self, info, infofn): + if not infofn or not os.path.exists(infofn): + if self._add_infojson is not True: + return + infofn = infofn or '%s.temp' % ( + self._downloader.prepare_filename(info, 'infojson') + or replace_extension(self._downloader.prepare_filename(info), 'info.json', info['ext'])) + if not self._downloader._ensure_dir_exists(infofn): + return + self.write_debug(f'Writing info-json to: {infofn}') + write_json_file(self._downloader.sanitize_info(info, self.get_param('clean_infojson', True)), infofn) + info['infojson_filename'] = infofn + + old_stream, new_stream = self.get_stream_number(info['filepath'], ('tags', 'mimetype'), 'application/json') + if old_stream is not None: + yield ('-map', '-0:%d' % old_stream) + new_stream -= 1 + + yield ( + '-attach', self._ffmpeg_filename_argument(infofn), + f'-metadata:s:{new_stream}', 'mimetype=application/json', + f'-metadata:s:{new_stream}', 'filename=info.json', + ) + + +class FFmpegMergerPP(FFmpegPostProcessor): + SUPPORTED_EXTS = MEDIA_EXTENSIONS.common_video + + @PostProcessor._restrict_to(images=False) + def run(self, info): + filename = info['filepath'] + temp_filename = prepend_extension(filename, 'temp') + args = ['-c', 'copy'] + audio_streams = 0 + for (i, fmt) in enumerate(info['requested_formats']): + if fmt.get('acodec') != 'none': + args.extend(['-map', f'{i}:a:0']) + aac_fixup = fmt['protocol'].startswith('m3u8') and self.get_audio_codec(fmt['filepath']) == 'aac' + if aac_fixup: + args.extend([f'-bsf:a:{audio_streams}', 'aac_adtstoasc']) + audio_streams += 1 + if fmt.get('vcodec') != 'none': + args.extend(['-map', '%u:v:0' % (i)]) + self.to_screen('Merging formats into "%s"' % filename) + self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args) + os.rename(encodeFilename(temp_filename), encodeFilename(filename)) + return info['__files_to_merge'], info + + def can_merge(self): + # TODO: figure out merge-capable ffmpeg version + if self.basename != 'avconv': + return True + + required_version = '10-0' + if is_outdated_version( + self._versions[self.basename], required_version): + warning = ('Your copy of %s is outdated and unable to properly mux separate video and audio files, ' + 'yt-dlp will download single file media. ' + 'Update %s to version %s or newer to fix this.') % ( + self.basename, self.basename, required_version) + self.report_warning(warning) + return False + return True + + +class FFmpegFixupPostProcessor(FFmpegPostProcessor): + def _fixup(self, msg, filename, options): + temp_filename = prepend_extension(filename, 'temp') + + self.to_screen(f'{msg} of "{filename}"') + self.run_ffmpeg(filename, temp_filename, options) + + os.replace(temp_filename, filename) + + +class FFmpegFixupStretchedPP(FFmpegFixupPostProcessor): + @PostProcessor._restrict_to(images=False, audio=False) + def run(self, info): + stretched_ratio = info.get('stretched_ratio') + if stretched_ratio not in (None, 1): + self._fixup('Fixing aspect ratio', info['filepath'], [ + *self.stream_copy_opts(), '-aspect', '%f' % stretched_ratio]) + return [], info + + +class FFmpegFixupM4aPP(FFmpegFixupPostProcessor): + @PostProcessor._restrict_to(images=False, video=False) + def run(self, info): + if info.get('container') == 'm4a_dash': + self._fixup('Correcting container', info['filepath'], [*self.stream_copy_opts(), '-f', 'mp4']) + return [], info + + +class FFmpegFixupM3u8PP(FFmpegFixupPostProcessor): + def _needs_fixup(self, info): + yield info['ext'] in ('mp4', 'm4a') + yield info['protocol'].startswith('m3u8') + try: + metadata = self.get_metadata_object(info['filepath']) + except PostProcessingError as e: + self.report_warning(f'Unable to extract metadata: {e.msg}') + yield True + else: + yield traverse_obj(metadata, ('format', 'format_name'), casesense=False) == 'mpegts' + + @PostProcessor._restrict_to(images=False) + def run(self, info): + if all(self._needs_fixup(info)): + args = ['-f', 'mp4'] + if self.get_audio_codec(info['filepath']) == 'aac': + args.extend(['-bsf:a', 'aac_adtstoasc']) + self._fixup('Fixing MPEG-TS in MP4 container', info['filepath'], [ + *self.stream_copy_opts(), *args]) + return [], info + + +class FFmpegFixupTimestampPP(FFmpegFixupPostProcessor): + + def __init__(self, downloader=None, trim=0.001): + # "trim" should be used when the video contains unintended packets + super().__init__(downloader) + assert isinstance(trim, (int, float)) + self.trim = str(trim) + + @PostProcessor._restrict_to(images=False) + def run(self, info): + if not self._features.get('setts'): + self.report_warning( + 'A re-encode is needed to fix timestamps in older versions of ffmpeg. ' + 'Please install ffmpeg 4.4 or later to fixup without re-encoding') + opts = ['-vf', 'setpts=PTS-STARTPTS'] + else: + opts = ['-c', 'copy', '-bsf', 'setts=ts=TS-STARTPTS'] + self._fixup('Fixing frame timestamp', info['filepath'], opts + [*self.stream_copy_opts(False), '-ss', self.trim]) + return [], info + + +class FFmpegCopyStreamPP(FFmpegFixupPostProcessor): + MESSAGE = 'Copying stream' + + @PostProcessor._restrict_to(images=False) + def run(self, info): + self._fixup(self.MESSAGE, info['filepath'], self.stream_copy_opts()) + return [], info + + +class FFmpegFixupDurationPP(FFmpegCopyStreamPP): + MESSAGE = 'Fixing video duration' + + +class FFmpegFixupDuplicateMoovPP(FFmpegCopyStreamPP): + MESSAGE = 'Fixing duplicate MOOV atoms' + + +class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor): + SUPPORTED_EXTS = MEDIA_EXTENSIONS.subtitles + + def __init__(self, downloader=None, format=None): + super().__init__(downloader) + self.format = format + + def run(self, info): + subs = info.get('requested_subtitles') + new_ext = self.format + new_format = new_ext + if new_format == 'vtt': + new_format = 'webvtt' + if subs is None: + self.to_screen('There aren\'t any subtitles to convert') + return [], info + self.to_screen('Converting subtitles') + sub_filenames = [] + for lang, sub in subs.items(): + if not os.path.exists(sub.get('filepath', '')): + self.report_warning(f'Skipping embedding {lang} subtitle because the file is missing') + continue + ext = sub['ext'] + if ext == new_ext: + self.to_screen('Subtitle file for %s is already in the requested format' % new_ext) + continue + elif ext == 'json': + self.to_screen( + 'You have requested to convert json subtitles into another format, ' + 'which is currently not possible') + continue + old_file = sub['filepath'] + sub_filenames.append(old_file) + new_file = replace_extension(old_file, new_ext) + + if ext in ('dfxp', 'ttml', 'tt'): + self.report_warning( + 'You have requested to convert dfxp (TTML) subtitles into another format, ' + 'which results in style information loss') + + dfxp_file = old_file + srt_file = replace_extension(old_file, 'srt') + + with open(dfxp_file, 'rb') as f: + srt_data = dfxp2srt(f.read()) + + with open(srt_file, 'w', encoding='utf-8') as f: + f.write(srt_data) + old_file = srt_file + + subs[lang] = { + 'ext': 'srt', + 'data': srt_data, + 'filepath': srt_file, + } + + if new_ext == 'srt': + continue + else: + sub_filenames.append(srt_file) + + self.run_ffmpeg(old_file, new_file, ['-f', new_format]) + + with open(new_file, encoding='utf-8') as f: + subs[lang] = { + 'ext': new_ext, + 'data': f.read(), + 'filepath': new_file, + } + + info['__files_to_move'][new_file] = replace_extension( + info['__files_to_move'][sub['filepath']], new_ext) + + return sub_filenames, info + + +class FFmpegSplitChaptersPP(FFmpegPostProcessor): + def __init__(self, downloader, force_keyframes=False): + FFmpegPostProcessor.__init__(self, downloader) + self._force_keyframes = force_keyframes + + def _prepare_filename(self, number, chapter, info): + info = info.copy() + info.update({ + 'section_number': number, + 'section_title': chapter.get('title'), + 'section_start': chapter.get('start_time'), + 'section_end': chapter.get('end_time'), + }) + return self._downloader.prepare_filename(info, 'chapter') + + def _ffmpeg_args_for_chapter(self, number, chapter, info): + destination = self._prepare_filename(number, chapter, info) + if not self._downloader._ensure_dir_exists(encodeFilename(destination)): + return + + chapter['filepath'] = destination + self.to_screen('Chapter %03d; Destination: %s' % (number, destination)) + return ( + destination, + ['-ss', str(chapter['start_time']), + '-t', str(chapter['end_time'] - chapter['start_time'])]) + + @PostProcessor._restrict_to(images=False) + def run(self, info): + self._fixup_chapters(info) + chapters = info.get('chapters') or [] + if not chapters: + self.to_screen('Chapter information is unavailable') + return [], info + + in_file = info['filepath'] + if self._force_keyframes and len(chapters) > 1: + in_file = self.force_keyframes(in_file, (c['start_time'] for c in chapters)) + self.to_screen('Splitting video by chapters; %d chapters found' % len(chapters)) + for idx, chapter in enumerate(chapters): + destination, opts = self._ffmpeg_args_for_chapter(idx + 1, chapter, info) + self.real_run_ffmpeg([(in_file, opts)], [(destination, self.stream_copy_opts())]) + if in_file != info['filepath']: + self._delete_downloaded_files(in_file, msg=None) + return [], info + + +class FFmpegThumbnailsConvertorPP(FFmpegPostProcessor): + SUPPORTED_EXTS = MEDIA_EXTENSIONS.thumbnails + FORMAT_RE = create_mapping_re(SUPPORTED_EXTS) + + def __init__(self, downloader=None, format=None): + super().__init__(downloader) + self.mapping = format + + @classmethod + def is_webp(cls, path): + deprecation_warning(f'{cls.__module__}.{cls.__name__}.is_webp is deprecated') + return imghdr.what(path) == 'webp' + + def fixup_webp(self, info, idx=-1): + thumbnail_filename = info['thumbnails'][idx]['filepath'] + _, thumbnail_ext = os.path.splitext(thumbnail_filename) + if thumbnail_ext: + if thumbnail_ext.lower() != '.webp' and imghdr.what(thumbnail_filename) == 'webp': + self.to_screen('Correcting thumbnail "%s" extension to webp' % thumbnail_filename) + webp_filename = replace_extension(thumbnail_filename, 'webp') + os.replace(thumbnail_filename, webp_filename) + info['thumbnails'][idx]['filepath'] = webp_filename + info['__files_to_move'][webp_filename] = replace_extension( + info['__files_to_move'].pop(thumbnail_filename), 'webp') + + @staticmethod + def _options(target_ext): + yield from ('-update', '1') + if target_ext == 'jpg': + yield from ('-bsf:v', 'mjpeg2jpeg') + + def convert_thumbnail(self, thumbnail_filename, target_ext): + thumbnail_conv_filename = replace_extension(thumbnail_filename, target_ext) + + self.to_screen(f'Converting thumbnail "{thumbnail_filename}" to {target_ext}') + _, source_ext = os.path.splitext(thumbnail_filename) + self.real_run_ffmpeg( + [(thumbnail_filename, [] if source_ext == '.gif' else ['-f', 'image2', '-pattern_type', 'none'])], + [(thumbnail_conv_filename, self._options(target_ext))]) + return thumbnail_conv_filename + + def run(self, info): + files_to_delete = [] + has_thumbnail = False + + for idx, thumbnail_dict in enumerate(info.get('thumbnails') or []): + original_thumbnail = thumbnail_dict.get('filepath') + if not original_thumbnail: + continue + has_thumbnail = True + self.fixup_webp(info, idx) + original_thumbnail = thumbnail_dict['filepath'] # Path can change during fixup + thumbnail_ext = os.path.splitext(original_thumbnail)[1][1:].lower() + if thumbnail_ext == 'jpeg': + thumbnail_ext = 'jpg' + target_ext, _skip_msg = resolve_mapping(thumbnail_ext, self.mapping) + if _skip_msg: + self.to_screen(f'Not converting thumbnail "{original_thumbnail}"; {_skip_msg}') + continue + thumbnail_dict['filepath'] = self.convert_thumbnail(original_thumbnail, target_ext) + files_to_delete.append(original_thumbnail) + info['__files_to_move'][thumbnail_dict['filepath']] = replace_extension( + info['__files_to_move'][original_thumbnail], target_ext) + + if not has_thumbnail: + self.to_screen('There aren\'t any thumbnails to convert') + return files_to_delete, info + + +class FFmpegConcatPP(FFmpegPostProcessor): + def __init__(self, downloader, only_multi_video=False): + self._only_multi_video = only_multi_video + super().__init__(downloader) + + def _get_codecs(self, file): + codecs = traverse_obj(self.get_metadata_object(file), ('streams', ..., 'codec_name')) + self.write_debug(f'Codecs = {", ".join(codecs)}') + return tuple(codecs) + + def concat_files(self, in_files, out_file): + if not self._downloader._ensure_dir_exists(out_file): + return + if len(in_files) == 1: + if os.path.realpath(in_files[0]) != os.path.realpath(out_file): + self.to_screen(f'Moving "{in_files[0]}" to "{out_file}"') + os.replace(in_files[0], out_file) + return [] + + if len(set(map(self._get_codecs, in_files))) > 1: + raise PostProcessingError( + 'The files have different streams/codecs and cannot be concatenated. ' + 'Either select different formats or --recode-video them to a common format') + + self.to_screen(f'Concatenating {len(in_files)} files; Destination: {out_file}') + super().concat_files(in_files, out_file) + return in_files + + @PostProcessor._restrict_to(images=False, simulated=False) + def run(self, info): + entries = info.get('entries') or [] + if not any(entries) or (self._only_multi_video and info['_type'] != 'multi_video'): + return [], info + elif traverse_obj(entries, (..., lambda k, v: k == 'requested_downloads' and len(v) > 1)): + raise PostProcessingError('Concatenation is not supported when downloading multiple separate formats') + + in_files = traverse_obj(entries, (..., 'requested_downloads', 0, 'filepath')) or [] + if len(in_files) < len(entries): + raise PostProcessingError('Aborting concatenation because some downloads failed') + + exts = traverse_obj(entries, (..., 'requested_downloads', 0, 'ext'), (..., 'ext')) + ie_copy = collections.ChainMap({'ext': exts[0] if len(set(exts)) == 1 else 'mkv'}, + info, self._downloader._playlist_infodict(info)) + out_file = self._downloader.prepare_filename(ie_copy, 'pl_video') + + files_to_delete = self.concat_files(in_files, out_file) + + info['requested_downloads'] = [{ + 'filepath': out_file, + 'ext': ie_copy['ext'], + }] + return files_to_delete, info |