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yt-dlp/yt_dlp/downloader/external.py

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import enum
import os.path
import re
import subprocess
import sys
import time
from .fragment import FragmentFD
from ..compat import functools # isort: split
from ..compat import compat_setenv
from ..postprocessor.ffmpeg import EXT_TO_OUT_FORMATS, FFmpegPostProcessor
from ..utils import (
Popen,
_configuration_args,
check_executable,
classproperty,
cli_bool_option,
cli_option,
cli_valueless_option,
determine_ext,
encodeArgument,
encodeFilename,
handle_youtubedl_headers,
remove_end,
traverse_obj,
)
class Features(enum.Enum):
TO_STDOUT = enum.auto()
MULTIPLE_FORMATS = enum.auto()
class ExternalFD(FragmentFD):
SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps')
SUPPORTED_FEATURES = ()
def real_download(self, filename, info_dict):
self.report_destination(filename)
tmpfilename = self.temp_name(filename)
try:
started = time.time()
retval = self._call_downloader(tmpfilename, info_dict)
except KeyboardInterrupt:
if not info_dict.get('is_live'):
raise
# Live stream downloading cancellation should be considered as
# correct and expected termination thus all postprocessing
# should take place
retval = 0
self.to_screen('[%s] Interrupted by user' % self.get_basename())
if retval == 0:
status = {
'filename': filename,
'status': 'finished',
'elapsed': time.time() - started,
}
if filename != '-':
fsize = os.path.getsize(encodeFilename(tmpfilename))
self.to_screen(f'\r[{self.get_basename()}] Downloaded {fsize} bytes')
self.try_rename(tmpfilename, filename)
status.update({
'downloaded_bytes': fsize,
'total_bytes': fsize,
})
self._hook_progress(status, info_dict)
return True
else:
self.to_stderr('\n')
self.report_error('%s exited with code %d' % (
self.get_basename(), retval))
return False
@classmethod
def get_basename(cls):
return cls.__name__[:-2].lower()
@classproperty
def EXE_NAME(cls):
return cls.get_basename()
@functools.cached_property
def exe(self):
return self.EXE_NAME
@classmethod
def available(cls, path=None):
path = check_executable(
cls.EXE_NAME if path in (None, cls.get_basename()) else path,
[cls.AVAILABLE_OPT])
if not path:
return False
cls.exe = path
return path
@classmethod
def supports(cls, info_dict):
return all((
not info_dict.get('to_stdout') or Features.TO_STDOUT in cls.SUPPORTED_FEATURES,
'+' not in info_dict['protocol'] or Features.MULTIPLE_FORMATS in cls.SUPPORTED_FEATURES,
all(proto in cls.SUPPORTED_PROTOCOLS for proto in info_dict['protocol'].split('+')),
))
@classmethod
def can_download(cls, info_dict, path=None):
return cls.available(path) and cls.supports(info_dict)
def _option(self, command_option, param):
return cli_option(self.params, command_option, param)
def _bool_option(self, command_option, param, true_value='true', false_value='false', separator=None):
return cli_bool_option(self.params, command_option, param, true_value, false_value, separator)
def _valueless_option(self, command_option, param, expected_value=True):
return cli_valueless_option(self.params, command_option, param, expected_value)
def _configuration_args(self, keys=None, *args, **kwargs):
return _configuration_args(
self.get_basename(), self.params.get('external_downloader_args'), self.EXE_NAME,
keys, *args, **kwargs)
def _call_downloader(self, tmpfilename, info_dict):
""" Either overwrite this or implement _make_cmd """
cmd = [encodeArgument(a) for a in self._make_cmd(tmpfilename, info_dict)]
self._debug_cmd(cmd)
if 'fragments' not in info_dict:
p = Popen(cmd, stderr=subprocess.PIPE)
_, stderr = p.communicate_or_kill()
if p.returncode != 0:
self.to_stderr(stderr.decode('utf-8', 'replace'))
return p.returncode
fragment_retries = self.params.get('fragment_retries', 0)
skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
count = 0
while count <= fragment_retries:
p = Popen(cmd, stderr=subprocess.PIPE)
_, stderr = p.communicate_or_kill()
if p.returncode == 0:
break
# TODO: Decide whether to retry based on error code
# https://aria2.github.io/manual/en/html/aria2c.html#exit-status
self.to_stderr(stderr.decode('utf-8', 'replace'))
count += 1
if count <= fragment_retries:
self.to_screen(
'[%s] Got error. Retrying fragments (attempt %d of %s)...'
% (self.get_basename(), count, self.format_retries(fragment_retries)))
self.sleep_retry('fragment', count)
if count > fragment_retries:
if not skip_unavailable_fragments:
self.report_error('Giving up after %s fragment retries' % fragment_retries)
return -1
decrypt_fragment = self.decrypter(info_dict)
dest, _ = self.sanitize_open(tmpfilename, 'wb')
for frag_index, fragment in enumerate(info_dict['fragments']):
fragment_filename = '%s-Frag%d' % (tmpfilename, frag_index)
try:
src, _ = self.sanitize_open(fragment_filename, 'rb')
except OSError as err:
if skip_unavailable_fragments and frag_index > 1:
self.report_skip_fragment(frag_index, err)
continue
self.report_error(f'Unable to open fragment {frag_index}; {err}')
return -1
dest.write(decrypt_fragment(fragment, src.read()))
src.close()
if not self.params.get('keep_fragments', False):
self.try_remove(encodeFilename(fragment_filename))
dest.close()
self.try_remove(encodeFilename('%s.frag.urls' % tmpfilename))
return 0
class CurlFD(ExternalFD):
AVAILABLE_OPT = '-V'
def _make_cmd(self, tmpfilename, info_dict):
cmd = [self.exe, '--location', '-o', tmpfilename, '--compressed']
if info_dict.get('http_headers') is not None:
for key, val in info_dict['http_headers'].items():
cmd += ['--header', f'{key}: {val}']
cmd += self._bool_option('--continue-at', 'continuedl', '-', '0')
cmd += self._valueless_option('--silent', 'noprogress')
cmd += self._valueless_option('--verbose', 'verbose')
cmd += self._option('--limit-rate', 'ratelimit')
retry = self._option('--retry', 'retries')
if len(retry) == 2:
if retry[1] in ('inf', 'infinite'):
retry[1] = '2147483647'
cmd += retry
cmd += self._option('--max-filesize', 'max_filesize')
cmd += self._option('--interface', 'source_address')
cmd += self._option('--proxy', 'proxy')
cmd += self._valueless_option('--insecure', 'nocheckcertificate')
cmd += self._configuration_args()
cmd += ['--', info_dict['url']]
return cmd
def _call_downloader(self, tmpfilename, info_dict):
cmd = [encodeArgument(a) for a in self._make_cmd(tmpfilename, info_dict)]
self._debug_cmd(cmd)
# curl writes the progress to stderr so don't capture it.
p = Popen(cmd)
p.communicate_or_kill()
return p.returncode
class AxelFD(ExternalFD):
AVAILABLE_OPT = '-V'
def _make_cmd(self, tmpfilename, info_dict):
cmd = [self.exe, '-o', tmpfilename]
if info_dict.get('http_headers') is not None:
for key, val in info_dict['http_headers'].items():
cmd += ['-H', f'{key}: {val}']
cmd += self._configuration_args()
cmd += ['--', info_dict['url']]
return cmd
class WgetFD(ExternalFD):
AVAILABLE_OPT = '--version'
def _make_cmd(self, tmpfilename, info_dict):
cmd = [self.exe, '-O', tmpfilename, '-nv', '--no-cookies', '--compression=auto']
if info_dict.get('http_headers') is not None:
for key, val in info_dict['http_headers'].items():
cmd += ['--header', f'{key}: {val}']
cmd += self._option('--limit-rate', 'ratelimit')
retry = self._option('--tries', 'retries')
if len(retry) == 2:
if retry[1] in ('inf', 'infinite'):
retry[1] = '0'
cmd += retry
cmd += self._option('--bind-address', 'source_address')
proxy = self.params.get('proxy')
if proxy:
for var in ('http_proxy', 'https_proxy'):
cmd += ['--execute', f'{var}={proxy}']
cmd += self._valueless_option('--no-check-certificate', 'nocheckcertificate')
cmd += self._configuration_args()
cmd += ['--', info_dict['url']]
return cmd
class Aria2cFD(ExternalFD):
AVAILABLE_OPT = '-v'
SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps', 'dash_frag_urls', 'm3u8_frag_urls')
@staticmethod
def supports_manifest(manifest):
UNSUPPORTED_FEATURES = [
r'#EXT-X-BYTERANGE', # playlists composed of byte ranges of media files [1]
# 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.2.2
]
check_results = (not re.search(feature, manifest) for feature in UNSUPPORTED_FEATURES)
return all(check_results)
def _make_cmd(self, tmpfilename, info_dict):
cmd = [self.exe, '-c',
'--console-log-level=warn', '--summary-interval=0', '--download-result=hide',
'--http-accept-gzip=true', '--file-allocation=none', '-x16', '-j16', '-s16']
if 'fragments' in info_dict:
cmd += ['--allow-overwrite=true', '--allow-piece-length-change=true']
else:
cmd += ['--min-split-size', '1M']
if info_dict.get('http_headers') is not None:
for key, val in info_dict['http_headers'].items():
cmd += ['--header', f'{key}: {val}']
cmd += self._option('--max-overall-download-limit', 'ratelimit')
cmd += self._option('--interface', 'source_address')
cmd += self._option('--all-proxy', 'proxy')
cmd += self._bool_option('--check-certificate', 'nocheckcertificate', 'false', 'true', '=')
cmd += self._bool_option('--remote-time', 'updatetime', 'true', 'false', '=')
cmd += self._bool_option('--show-console-readout', 'noprogress', 'false', 'true', '=')
cmd += self._configuration_args()
# aria2c strips out spaces from the beginning/end of filenames and paths.
# We work around this issue by adding a "./" to the beginning of the
# filename and relative path, and adding a "/" at the end of the path.
# See: https://github.com/yt-dlp/yt-dlp/issues/276
# https://github.com/ytdl-org/youtube-dl/issues/20312
# https://github.com/aria2/aria2/issues/1373
dn = os.path.dirname(tmpfilename)
if dn:
if not os.path.isabs(dn):
dn = f'.{os.path.sep}{dn}'
cmd += ['--dir', dn + os.path.sep]
if 'fragments' not in info_dict:
cmd += ['--out', f'.{os.path.sep}{os.path.basename(tmpfilename)}']
cmd += ['--auto-file-renaming=false']
if 'fragments' in info_dict:
cmd += ['--file-allocation=none', '--uri-selector=inorder']
url_list_file = '%s.frag.urls' % tmpfilename
url_list = []
for frag_index, fragment in enumerate(info_dict['fragments']):
fragment_filename = '%s-Frag%d' % (os.path.basename(tmpfilename), frag_index)
url_list.append('%s\n\tout=%s' % (fragment['url'], fragment_filename))
stream, _ = self.sanitize_open(url_list_file, 'wb')
stream.write('\n'.join(url_list).encode())
stream.close()
cmd += ['-i', url_list_file]
else:
cmd += ['--', info_dict['url']]
return cmd
class HttpieFD(ExternalFD):
AVAILABLE_OPT = '--version'
EXE_NAME = 'http'
def _make_cmd(self, tmpfilename, info_dict):
cmd = ['http', '--download', '--output', tmpfilename, info_dict['url']]
if info_dict.get('http_headers') is not None:
for key, val in info_dict['http_headers'].items():
cmd += [f'{key}:{val}']
return cmd
class FFmpegFD(ExternalFD):
SUPPORTED_PROTOCOLS = ('http', 'https', 'ftp', 'ftps', 'm3u8', 'm3u8_native', 'rtsp', 'rtmp', 'rtmp_ffmpeg', 'mms', 'http_dash_segments')
SUPPORTED_FEATURES = (Features.TO_STDOUT, Features.MULTIPLE_FORMATS)
@classmethod
def available(cls, path=None):
# TODO: Fix path for ffmpeg
# Fixme: This may be wrong when --ffmpeg-location is used
return FFmpegPostProcessor().available
def on_process_started(self, proc, stdin):
""" Override this in subclasses """
pass
@classmethod
def can_merge_formats(cls, info_dict, params):
return (
info_dict.get('requested_formats')
and info_dict.get('protocol')
and not params.get('allow_unplayable_formats')
and 'no-direct-merge' not in params.get('compat_opts', [])
and cls.can_download(info_dict))
def _call_downloader(self, tmpfilename, info_dict):
urls = [f['url'] for f in info_dict.get('requested_formats', [])] or [info_dict['url']]
ffpp = FFmpegPostProcessor(downloader=self)
if not ffpp.available:
self.report_error('m3u8 download detected but ffmpeg could not be found. Please install')
return False
ffpp.check_version()
args = [ffpp.executable, '-y']
for log_level in ('quiet', 'verbose'):
if self.params.get(log_level, False):
args += ['-loglevel', log_level]
break
if not self.params.get('verbose'):
args += ['-hide_banner']
args += traverse_obj(info_dict, ('downloader_options', 'ffmpeg_args'), default=[])
# These exists only for compatibility. Extractors should use
# info_dict['downloader_options']['ffmpeg_args'] instead
args += info_dict.get('_ffmpeg_args') or []
seekable = info_dict.get('_seekable')
if seekable is not None:
# setting -seekable prevents ffmpeg from guessing if the server
# supports seeking(by adding the header `Range: bytes=0-`), which
# can cause problems in some cases
# https://github.com/ytdl-org/youtube-dl/issues/11800#issuecomment-275037127
# http://trac.ffmpeg.org/ticket/6125#comment:10
args += ['-seekable', '1' if seekable else '0']
http_headers = None
if info_dict.get('http_headers'):
youtubedl_headers = handle_youtubedl_headers(info_dict['http_headers'])
http_headers = [
# Trailing \r\n after each HTTP header is important to prevent warning from ffmpeg/avconv:
# [http @ 00000000003d2fa0] No trailing CRLF found in HTTP header.
'-headers',
''.join(f'{key}: {val}\r\n' for key, val in youtubedl_headers.items())
]
env = None
proxy = self.params.get('proxy')
if proxy:
if not re.match(r'^[\da-zA-Z]+://', proxy):
proxy = 'http://%s' % proxy
if proxy.startswith('socks'):
self.report_warning(
'%s does not support SOCKS proxies. Downloading is likely to fail. '
'Consider adding --hls-prefer-native to your command.' % self.get_basename())
# Since December 2015 ffmpeg supports -http_proxy option (see
# http://git.videolan.org/?p=ffmpeg.git;a=commit;h=b4eb1f29ebddd60c41a2eb39f5af701e38e0d3fd)
# We could switch to the following code if we are able to detect version properly
# args += ['-http_proxy', proxy]
env = os.environ.copy()
compat_setenv('HTTP_PROXY', proxy, env=env)
compat_setenv('http_proxy', proxy, env=env)
protocol = info_dict.get('protocol')
if protocol == 'rtmp':
player_url = info_dict.get('player_url')
page_url = info_dict.get('page_url')
app = info_dict.get('app')
play_path = info_dict.get('play_path')
tc_url = info_dict.get('tc_url')
flash_version = info_dict.get('flash_version')
live = info_dict.get('rtmp_live', False)
conn = info_dict.get('rtmp_conn')
if player_url is not None:
args += ['-rtmp_swfverify', player_url]
if page_url is not None:
args += ['-rtmp_pageurl', page_url]
if app is not None:
args += ['-rtmp_app', app]
if play_path is not None:
args += ['-rtmp_playpath', play_path]
if tc_url is not None:
args += ['-rtmp_tcurl', tc_url]
if flash_version is not None:
args += ['-rtmp_flashver', flash_version]
if live:
args += ['-rtmp_live', 'live']
if isinstance(conn, list):
for entry in conn:
args += ['-rtmp_conn', entry]
elif isinstance(conn, str):
args += ['-rtmp_conn', conn]
start_time, end_time = info_dict.get('section_start') or 0, info_dict.get('section_end')
for i, url in enumerate(urls):
if http_headers is not None and re.match(r'^https?://', url):
args += http_headers
if start_time:
args += ['-ss', str(start_time)]
if end_time:
args += ['-t', str(end_time - start_time)]
args += self._configuration_args((f'_i{i + 1}', '_i')) + ['-i', url]
if not (start_time or end_time) or not self.params.get('force_keyframes_at_cuts'):
args += ['-c', 'copy']
if info_dict.get('requested_formats') or protocol == 'http_dash_segments':
for (i, fmt) in enumerate(info_dict.get('requested_formats') or [info_dict]):
stream_number = fmt.get('manifest_stream_number', 0)
args.extend(['-map', f'{i}:{stream_number}'])
if self.params.get('test', False):
args += ['-fs', str(self._TEST_FILE_SIZE)]
ext = info_dict['ext']
if protocol in ('m3u8', 'm3u8_native'):
use_mpegts = (tmpfilename == '-') or self.params.get('hls_use_mpegts')
if use_mpegts is None:
use_mpegts = info_dict.get('is_live')
if use_mpegts:
args += ['-f', 'mpegts']
else:
args += ['-f', 'mp4']
if (ffpp.basename == 'ffmpeg' and ffpp._features.get('needs_adtstoasc')) and (not info_dict.get('acodec') or info_dict['acodec'].split('.')[0] in ('aac', 'mp4a')):
args += ['-bsf:a', 'aac_adtstoasc']
elif protocol == 'rtmp':
args += ['-f', 'flv']
elif ext == 'mp4' and tmpfilename == '-':
args += ['-f', 'mpegts']
elif ext == 'unknown_video':
ext = determine_ext(remove_end(tmpfilename, '.part'))
if ext == 'unknown_video':
self.report_warning(
'The video format is unknown and cannot be downloaded by ffmpeg. '
'Explicitly set the extension in the filename to attempt download in that format')
else:
self.report_warning(f'The video format is unknown. Trying to download as {ext} according to the filename')
args += ['-f', EXT_TO_OUT_FORMATS.get(ext, ext)]
else:
args += ['-f', EXT_TO_OUT_FORMATS.get(ext, ext)]
args += self._configuration_args(('_o1', '_o', ''))
args = [encodeArgument(opt) for opt in args]
args.append(encodeFilename(ffpp._ffmpeg_filename_argument(tmpfilename), True))
self._debug_cmd(args)
proc = Popen(args, stdin=subprocess.PIPE, env=env)
if url in ('-', 'pipe:'):
self.on_process_started(proc, proc.stdin)
try:
retval = proc.wait()
except BaseException as e:
# subprocces.run would send the SIGKILL signal to ffmpeg and the
# mp4 file couldn't be played, but if we ask ffmpeg to quit it
# produces a file that is playable (this is mostly useful for live
# streams). Note that Windows is not affected and produces playable
# files (see https://github.com/ytdl-org/youtube-dl/issues/8300).
if isinstance(e, KeyboardInterrupt) and sys.platform != 'win32' and url not in ('-', 'pipe:'):
proc.communicate_or_kill(b'q')
else:
proc.kill()
proc.wait()
raise
return retval
class AVconvFD(FFmpegFD):
pass
_BY_NAME = {
klass.get_basename(): klass
for name, klass in globals().items()
if name.endswith('FD') and name not in ('ExternalFD', 'FragmentFD')
}
_BY_EXE = {klass.EXE_NAME: klass for klass in _BY_NAME.values()}
def list_external_downloaders():
return sorted(_BY_NAME.keys())
def get_external_downloader(external_downloader):
""" Given the name of the executable, see whether we support the given
downloader . """
# Drop .exe extension on Windows
bn = os.path.splitext(os.path.basename(external_downloader))[0]
return _BY_NAME.get(bn, _BY_EXE.get(bn))
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