X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/9dc487f48b50767cf540fa36c3de2c386fd74c04..f8eb4d6a400267895af2f217c36101294f8a94d2:/youtube_dl/downloader/f4m.py diff --git a/youtube_dl/downloader/f4m.py b/youtube_dl/downloader/f4m.py index 8f88b02..15e71be 100644 --- a/youtube_dl/downloader/f4m.py +++ b/youtube_dl/downloader/f4m.py @@ -1,13 +1,12 @@ 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, @@ -16,9 +15,7 @@ from ..compat import ( compat_struct_unpack, ) from ..utils import ( - encodeFilename, fix_xml_ampersands, - sanitize_open, xpath_text, ) @@ -196,6 +193,11 @@ def build_fragments_list(boot_info): 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))) @@ -241,8 +243,17 @@ def remove_encrypted_media(media): media)) -def _add_ns(prop): - return '{http://ns.adobe.com/f4m/1.0}%s' % prop +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): @@ -301,7 +312,7 @@ class F4mFD(FragmentFD): 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 @@ -309,7 +320,8 @@ class F4mFD(FragmentFD): 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() # Some manifests may be malformed, e.g. prosiebensat1 generated manifests # (see https://github.com/rg3/youtube-dl/issues/6215#issuecomment-121704244 @@ -327,13 +339,17 @@ class F4mFD(FragmentFD): 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 @@ -356,17 +372,21 @@ class F4mFD(FragmentFD): 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: @@ -376,14 +396,10 @@ class F4mFD(FragmentFD): 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: try: @@ -398,12 +414,8 @@ class F4mFD(FragmentFD): 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 @@ -423,7 +435,4 @@ class F4mFD(FragmentFD): self._finish_frag_download(ctx) - for frag_file in frags_filenames: - os.remove(encodeFilename(frag_file)) - return True