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[ffmpeg] Standardize use of `-map 0` 

Closes #2182
This commit is contained in:
pukkandan 2022-01-12 08:52:09 +05:30
parent 4636548463
commit 397235c52b
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GPG Key ID: 0F00D95A001F4698
2 changed files with 30 additions and 26 deletions
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4
yt_dlp/postprocessor/embedthumbnail.py
View File

@ -108,7 +108,7 @@ class EmbedThumbnailPP(FFmpegPostProcessor):
self.run_ffmpeg_multiple_files([filename, thumbnail_filename], temp_filename, options)
elif info['ext'] in ['mkv', 'mka']:
options = ['-c', 'copy', '-map', '0', '-dn']
options = list(self.stream_copy_opts())
mimetype = 'image/%s' % ('png' if thumbnail_ext == 'png' else 'jpeg')
old_stream, new_stream = self.get_stream_number(
@ -184,7 +184,7 @@ class EmbedThumbnailPP(FFmpegPostProcessor):
if not success:
success = True
try:
options = ['-c', 'copy', '-map', '0', '-dn', '-map', '1']
options = [*self.stream_copy_opts(), '-map', '1']
old_stream, new_stream = self.get_stream_number(
filename, ('disposition', 'attached_pic'), 1)

52
yt_dlp/postprocessor/ffmpeg.py
View File

@ -13,6 +13,7 @@ from .common import AudioConversionError, PostProcessor
from ..compat import compat_str
from ..utils import (
determine_ext,
dfxp2srt,
encodeArgument,
encodeFilename,
@ -191,6 +192,18 @@ class FFmpegPostProcessor(PostProcessor):
def probe_executable(self):
return self._paths[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 '-dn'
if copy:
yield from ('-c', 'copy')
# For some reason, '-c copy -map 0' is not enough to copy subtitles
if ext in ('mp4', 'mov'):
yield from ('-c:s', 'mov_text')
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')
@ -352,8 +365,9 @@ class FFmpegPostProcessor(PostProcessor):
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, ['-force_key_frames', ','.join(
f'{t:.6f}' for t in timestamps)])
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):
@ -368,10 +382,7 @@ class FFmpegPostProcessor(PostProcessor):
with open(concat_file, 'wt', encoding='utf-8') as f:
f.writelines(self._concat_spec(in_files, concat_opts))
out_flags = ['-c', 'copy']
if out_file.rpartition('.')[-1] in ('mp4', 'mov'):
# For some reason, '-c copy' is not enough to copy subtitles
out_flags.extend(['-c:s', 'mov_text'])
out_flags = list(self.stream_copy_opts(ext=determine_ext(out_file)))
try:
self.real_run_ffmpeg(
@ -574,7 +585,7 @@ class FFmpegVideoRemuxerPP(FFmpegVideoConvertorPP):
@staticmethod
def _options(target_ext):
return ['-c', 'copy', '-map', '0', '-dn']
return self.stream_copy_opts()
class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
@ -634,16 +645,11 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
input_files = [filename] + sub_filenames
opts = [
'-c', 'copy', '-map', '0', '-dn',
*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',
# Don't copy Apple TV chapters track, bin_data (see #19042, #19024,
# https://trac.ffmpeg.org/ticket/6016)
'-map', '-0:d',
]
if info['ext'] == 'mp4':
opts += ['-c:s', 'mov_text']
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
@ -671,11 +677,10 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
@staticmethod
def _options(target_ext):
yield from ('-map', '0', '-dn')
if target_ext == 'm4a':
audio_only = target_ext == 'm4a'
yield from self.stream_copy_opts(not audio_only)
if audio_only:
yield from ('-vn', '-acodec', 'copy')
else:
yield from ('-c', 'copy')
@PostProcessor._restrict_to(images=False)
def run(self, info):
@ -859,7 +864,7 @@ class FFmpegFixupStretchedPP(FFmpegFixupPostProcessor):
stretched_ratio = info.get('stretched_ratio')
if stretched_ratio not in (None, 1):
self._fixup('Fixing aspect ratio', info['filepath'], [
'-c', 'copy', '-map', '0', '-dn', '-aspect', '%f' % stretched_ratio])
*self.stream_copy_opts(), '-aspect', '%f' % stretched_ratio])
return [], info
@ -867,8 +872,7 @@ 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'], [
'-c', 'copy', '-map', '0', '-dn', '-f', 'mp4'])
self._fixup('Correcting container', info['filepath'], [*self.stream_copy_opts(), '-f', 'mp4'])
return [], info
@ -888,7 +892,7 @@ class FFmpegFixupM3u8PP(FFmpegFixupPostProcessor):
def run(self, info):
if all(self._needs_fixup(info)):
self._fixup('Fixing MPEG-TS in MP4 container', info['filepath'], [
'-c', 'copy', '-map', '0', '-dn', '-f', 'mp4', '-bsf:a', 'aac_adtstoasc'])
*self.stream_copy_opts(), '-f', 'mp4', '-bsf:a', 'aac_adtstoasc'])
return [], info
@ -909,7 +913,7 @@ class FFmpegFixupTimestampPP(FFmpegFixupPostProcessor):
opts = ['-vf', 'setpts=PTS-STARTPTS']
else:
opts = ['-c', 'copy', '-bsf', 'setts=ts=TS-STARTPTS']
self._fixup('Fixing frame timestamp', info['filepath'], opts + ['-map', '0', '-dn', '-ss', self.trim])
self._fixup('Fixing frame timestamp', info['filepath'], opts + [*self.stream_copy_opts(False), '-ss', self.trim])
return [], info
@ -918,7 +922,7 @@ class FFmpegCopyStreamPostProcessor(FFmpegFixupPostProcessor):
@PostProcessor._restrict_to(images=False)
def run(self, info):
self._fixup(self.MESSAGE, info['filepath'], ['-c', 'copy', '-map', '0', '-dn'])
self._fixup(self.MESSAGE, info['filepath'], self.stream_copy_opts())
return [], info
@ -1046,7 +1050,7 @@ class FFmpegSplitChaptersPP(FFmpegPostProcessor):
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, ['-c', 'copy'])])
self.real_run_ffmpeg([(in_file, opts)], [(destination, self.stream_copy_opts())])
if in_file != info['filepath']:
os.remove(in_file)
return [], info