from __future__ import division, unicode_literals
-import base64
import io
import itertools
-import os
import time
from .fragment import FragmentFD
from ..compat import (
+ compat_b64decode,
compat_etree_fromstring,
compat_urlparse,
compat_urllib_error,
compat_urllib_parse_urlparse,
+ compat_struct_pack,
+ compat_struct_unpack,
)
from ..utils import (
- encodeFilename,
- sanitize_open,
- struct_pack,
- struct_unpack,
+ fix_xml_ampersands,
xpath_text,
)
+class DataTruncatedError(Exception):
+ pass
+
+
class FlvReader(io.BytesIO):
"""
Reader for Flv files
The file format is documented in https://www.adobe.com/devnet/f4v.html
"""
+ def read_bytes(self, n):
+ data = self.read(n)
+ if len(data) < n:
+ raise DataTruncatedError(
+ 'FlvReader error: need %d bytes while only %d bytes got' % (
+ n, len(data)))
+ return data
+
# Utility functions for reading numbers and strings
def read_unsigned_long_long(self):
- return struct_unpack('!Q', self.read(8))[0]
+ return compat_struct_unpack('!Q', self.read_bytes(8))[0]
def read_unsigned_int(self):
- return struct_unpack('!I', self.read(4))[0]
+ return compat_struct_unpack('!I', self.read_bytes(4))[0]
def read_unsigned_char(self):
- return struct_unpack('!B', self.read(1))[0]
+ return compat_struct_unpack('!B', self.read_bytes(1))[0]
def read_string(self):
res = b''
while True:
- char = self.read(1)
+ char = self.read_bytes(1)
if char == b'\x00':
break
res += char
Read a box and return the info as a tuple: (box_size, box_type, box_data)
"""
real_size = size = self.read_unsigned_int()
- box_type = self.read(4)
+ box_type = self.read_bytes(4)
header_end = 8
if size == 1:
real_size = self.read_unsigned_long_long()
header_end = 16
- return real_size, box_type, self.read(real_size - header_end)
+ return real_size, box_type, self.read_bytes(real_size - header_end)
def read_asrt(self):
# version
self.read_unsigned_char()
# flags
- self.read(3)
+ self.read_bytes(3)
quality_entry_count = self.read_unsigned_char()
# QualityEntryCount
for i in range(quality_entry_count):
# version
self.read_unsigned_char()
# flags
- self.read(3)
+ self.read_bytes(3)
# time scale
self.read_unsigned_int()
# version
self.read_unsigned_char()
# flags
- self.read(3)
+ self.read_bytes(3)
self.read_unsigned_int() # BootstrapinfoVersion
# Profile,Live,Update,Reserved
first_frag_number = fragment_run_entry_table[0]['first']
fragments_counter = itertools.count(first_frag_number)
for segment, fragments_count in segment_run_table['segment_run']:
+ # In some live HDS streams (for example Rai), `fragments_count` is
+ # abnormal and causing out-of-memory errors. It's OK to change the
+ # number of fragments for live streams as they are updated periodically
+ if fragments_count == 4294967295 and boot_info['live']:
+ fragments_count = 2
for _ in range(fragments_count):
res.append((segment, next(fragments_counter)))
def write_unsigned_int(stream, val):
- stream.write(struct_pack('!I', val))
+ stream.write(compat_struct_pack('!I', val))
def write_unsigned_int_24(stream, val):
- stream.write(struct_pack('!I', val)[1:])
+ stream.write(compat_struct_pack('!I', val)[1:])
def write_flv_header(stream):
write_unsigned_int(stream, FLV_TAG_HEADER_LEN + len(metadata))
-def _add_ns(prop):
- return '{http://ns.adobe.com/f4m/1.0}%s' % prop
+def remove_encrypted_media(media):
+ return list(filter(lambda e: 'drmAdditionalHeaderId' not in e.attrib and
+ 'drmAdditionalHeaderSetId' not in e.attrib,
+ media))
+
+
+def _add_ns(prop, ver=1):
+ return '{http://ns.adobe.com/f4m/%d.0}%s' % (ver, prop)
+
+
+def get_base_url(manifest):
+ base_url = xpath_text(
+ manifest, [_add_ns('baseURL'), _add_ns('baseURL', 2)],
+ 'base URL', default=None)
+ if base_url:
+ base_url = base_url.strip()
+ return base_url
class F4mFD(FragmentFD):
# without drmAdditionalHeaderId or drmAdditionalHeaderSetId attribute
if 'id' not in e.attrib:
self.report_error('Missing ID in f4m DRM')
- media = list(filter(lambda e: 'drmAdditionalHeaderId' not in e.attrib and
- 'drmAdditionalHeaderSetId' not in e.attrib,
- media))
+ media = remove_encrypted_media(media)
if not media:
self.report_error('Unsupported DRM')
return media
return fragments_list
def _parse_bootstrap_node(self, node, base_url):
- if node.text is None:
+ # Sometimes non empty inline bootstrap info can be specified along
+ # with bootstrap url attribute (e.g. dummy inline bootstrap info
+ # contains whitespace characters in [1]). We will prefer bootstrap
+ # url over inline bootstrap info when present.
+ # 1. http://live-1-1.rutube.ru/stream/1024/HDS/SD/C2NKsS85HQNckgn5HdEmOQ/1454167650/S-s604419906/move/four/dirs/upper/1024-576p.f4m
+ bootstrap_url = node.get('url')
+ if bootstrap_url:
bootstrap_url = compat_urlparse.urljoin(
- base_url, node.attrib['url'])
+ base_url, bootstrap_url)
boot_info = self._get_bootstrap_from_url(bootstrap_url)
else:
bootstrap_url = None
- bootstrap = base64.b64decode(node.text.encode('ascii'))
+ bootstrap = compat_b64decode(node.text)
boot_info = read_bootstrap_info(bootstrap)
- return (boot_info, bootstrap_url)
+ return boot_info, bootstrap_url
def real_download(self, filename, info_dict):
man_url = info_dict['url']
requested_bitrate = info_dict.get('tbr')
self.to_screen('[%s] Downloading f4m manifest' % self.FD_NAME)
- urlh = self.ydl.urlopen(man_url)
+
+ urlh = self.ydl.urlopen(self._prepare_url(info_dict, man_url))
man_url = urlh.geturl()
- manifest = urlh.read()
+ # Some manifests may be malformed, e.g. prosiebensat1 generated manifests
+ # (see https://github.com/rg3/youtube-dl/issues/6215#issuecomment-121704244
+ # and https://github.com/rg3/youtube-dl/issues/7823)
+ manifest = fix_xml_ampersands(urlh.read().decode('utf-8', 'ignore')).strip()
doc = compat_etree_fromstring(manifest)
formats = [(int(f.attrib.get('bitrate', -1)), f)
for f in self._get_unencrypted_media(doc)]
- if requested_bitrate is None:
+ if requested_bitrate is None or len(formats) == 1:
# get the best format
formats = sorted(formats, key=lambda f: f[0])
rate, media = formats[-1]
rate, media = list(filter(
lambda f: int(f[0]) == requested_bitrate, formats))[0]
- base_url = compat_urlparse.urljoin(man_url, media.attrib['url'])
+ # Prefer baseURL for relative URLs as per 11.2 of F4M 3.0 spec.
+ man_base_url = get_base_url(doc) or man_url
+
+ base_url = compat_urlparse.urljoin(man_base_url, media.attrib['url'])
bootstrap_node = doc.find(_add_ns('bootstrapInfo'))
- boot_info, bootstrap_url = self._parse_bootstrap_node(bootstrap_node, base_url)
+ boot_info, bootstrap_url = self._parse_bootstrap_node(
+ bootstrap_node, man_base_url)
live = boot_info['live']
metadata_node = media.find(_add_ns('metadata'))
if metadata_node is not None:
- metadata = base64.b64decode(metadata_node.text.encode('ascii'))
+ metadata = compat_b64decode(metadata_node.text)
else:
metadata = None
fragments_list = build_fragments_list(boot_info)
- if self.params.get('test', False):
+ test = self.params.get('test', False)
+ if test:
# We only download the first fragment
fragments_list = fragments_list[:1]
total_frags = len(fragments_list)
ctx = {
'filename': filename,
'total_frags': total_frags,
+ 'live': live,
}
self._prepare_frag_download(ctx)
dest_stream = ctx['dest_stream']
- write_flv_header(dest_stream)
- if not live:
- write_metadata_tag(dest_stream, metadata)
+ if ctx['complete_frags_downloaded_bytes'] == 0:
+ write_flv_header(dest_stream)
+ if not live:
+ write_metadata_tag(dest_stream, metadata)
base_url_parsed = compat_urllib_parse_urlparse(base_url)
self._start_frag_download(ctx)
- frags_filenames = []
+ frag_index = 0
while fragments_list:
seg_i, frag_i = fragments_list.pop(0)
+ frag_index += 1
+ if frag_index <= ctx['fragment_index']:
+ continue
name = 'Seg%d-Frag%d' % (seg_i, frag_i)
query = []
if base_url_parsed.query:
if info_dict.get('extra_param_to_segment_url'):
query.append(info_dict['extra_param_to_segment_url'])
url_parsed = base_url_parsed._replace(path=base_url_parsed.path + name, query='&'.join(query))
- frag_filename = '%s-%s' % (ctx['tmpfilename'], name)
try:
- success = ctx['dl'].download(frag_filename, {'url': url_parsed.geturl()})
+ success, down_data = self._download_fragment(ctx, url_parsed.geturl(), info_dict)
if not success:
return False
- (down, frag_sanitized) = sanitize_open(frag_filename, 'rb')
- down_data = down.read()
- down.close()
reader = FlvReader(down_data)
while True:
- _, box_type, box_data = reader.read_box_info()
+ try:
+ _, box_type, box_data = reader.read_box_info()
+ except DataTruncatedError:
+ if test:
+ # In tests, segments may be truncated, and thus
+ # FlvReader may not be able to parse the whole
+ # chunk. If so, write the segment as is
+ # See https://github.com/rg3/youtube-dl/issues/9214
+ dest_stream.write(down_data)
+ break
+ raise
if box_type == b'mdat':
- dest_stream.write(box_data)
+ self._append_fragment(ctx, box_data)
break
- if live:
- os.remove(encodeFilename(frag_sanitized))
- else:
- frags_filenames.append(frag_sanitized)
except (compat_urllib_error.HTTPError, ) as err:
if live and (err.code == 404 or err.code == 410):
# We didn't keep up with the live window. Continue
else:
raise
- if not fragments_list and live and bootstrap_url:
+ if not fragments_list and not test and live and bootstrap_url:
fragments_list = self._update_live_fragments(bootstrap_url, frag_i)
total_frags += len(fragments_list)
if fragments_list and (fragments_list[0][1] > frag_i + 1):
self._finish_frag_download(ctx)
- for frag_file in frags_filenames:
- os.remove(encodeFilename(frag_file))
-
return True
Rapsys Git / youtubedl / blobdiff