mirror of
https://github.com/ytdl-org/youtube-dl.git
synced 2024-12-25 18:27:42 +00:00
[fragment,hls,f4m,dash,ism] improve fragment downloading
- resume immediately - no need to concatenate segments and decrypt them on every resume - no need to save temp files for segments and for hls downloader: - no need to download keys for segments that already downloaded
This commit is contained in:
parent
58f6ab72ed
commit
75a2485407
7 changed files with 111 additions and 123 deletions
|
@ -327,21 +327,22 @@ class FileDownloader(object):
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os.path.exists(encodeFilename(filename))
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)
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continuedl_and_exists = (
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self.params.get('continuedl', True) and
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os.path.isfile(encodeFilename(filename)) and
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not self.params.get('nopart', False)
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)
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if not hasattr(filename, 'write'):
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continuedl_and_exists = (
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self.params.get('continuedl', True) and
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os.path.isfile(encodeFilename(filename)) and
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not self.params.get('nopart', False)
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)
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# Check file already present
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if filename != '-' and (nooverwrites_and_exists or continuedl_and_exists):
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self.report_file_already_downloaded(filename)
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self._hook_progress({
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'filename': filename,
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'status': 'finished',
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'total_bytes': os.path.getsize(encodeFilename(filename)),
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})
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return True
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# Check file already present
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if filename != '-' and (nooverwrites_and_exists or continuedl_and_exists):
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self.report_file_already_downloaded(filename)
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self._hook_progress({
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'filename': filename,
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'status': 'finished',
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'total_bytes': os.path.getsize(encodeFilename(filename)),
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})
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return True
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min_sleep_interval = self.params.get('sleep_interval')
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if min_sleep_interval:
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@ -1,13 +1,7 @@
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from __future__ import unicode_literals
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import os
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from .fragment import FragmentFD
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from ..compat import compat_urllib_error
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from ..utils import (
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sanitize_open,
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encodeFilename,
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)
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class DashSegmentsFD(FragmentFD):
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@ -28,31 +22,24 @@ class DashSegmentsFD(FragmentFD):
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self._prepare_and_start_frag_download(ctx)
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segments_filenames = []
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fragment_retries = self.params.get('fragment_retries', 0)
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skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
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def process_segment(segment, tmp_filename, num):
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segment_url = segment['url']
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segment_name = 'Frag%d' % num
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target_filename = '%s-%s' % (tmp_filename, segment_name)
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frag_index = 0
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for i, segment in enumerate(segments):
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frag_index += 1
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if frag_index <= ctx['frag_index']:
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continue
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# In DASH, the first segment contains necessary headers to
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# generate a valid MP4 file, so always abort for the first segment
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fatal = num == 0 or not skip_unavailable_fragments
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fatal = i == 0 or not skip_unavailable_fragments
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count = 0
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while count <= fragment_retries:
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try:
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success = ctx['dl'].download(target_filename, {
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'url': segment_url,
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'http_headers': info_dict.get('http_headers'),
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})
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success, frag_content = self._download_fragment(ctx, segment['url'], info_dict)
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if not success:
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return False
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down, target_sanitized = sanitize_open(target_filename, 'rb')
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ctx['dest_stream'].write(down.read())
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down.close()
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segments_filenames.append(target_sanitized)
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self._append_fragment(ctx, frag_content)
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break
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except compat_urllib_error.HTTPError as err:
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# YouTube may often return 404 HTTP error for a fragment causing the
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@ -63,22 +50,14 @@ class DashSegmentsFD(FragmentFD):
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# HTTP error.
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count += 1
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if count <= fragment_retries:
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self.report_retry_fragment(err, segment_name, count, fragment_retries)
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self.report_retry_fragment(err, frag_index, count, fragment_retries)
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if count > fragment_retries:
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if not fatal:
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self.report_skip_fragment(segment_name)
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return True
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self.report_skip_fragment(frag_index)
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continue
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self.report_error('giving up after %s fragment retries' % fragment_retries)
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return False
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return True
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for i, segment in enumerate(segments):
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if not process_segment(segment, ctx['tmpfilename'], i):
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return False
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self._finish_frag_download(ctx)
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for segment_file in segments_filenames:
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os.remove(encodeFilename(segment_file))
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return True
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@ -3,7 +3,6 @@ from __future__ import division, unicode_literals
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import base64
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import io
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import itertools
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import os
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import time
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from .fragment import FragmentFD
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@ -16,9 +15,7 @@ from ..compat import (
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compat_struct_unpack,
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)
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from ..utils import (
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encodeFilename,
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fix_xml_ampersands,
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sanitize_open,
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xpath_text,
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)
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@ -366,17 +363,21 @@ class F4mFD(FragmentFD):
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dest_stream = ctx['dest_stream']
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write_flv_header(dest_stream)
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if not live:
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write_metadata_tag(dest_stream, metadata)
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if ctx['complete_frags_downloaded_bytes'] == 0:
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write_flv_header(dest_stream)
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if not live:
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write_metadata_tag(dest_stream, metadata)
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base_url_parsed = compat_urllib_parse_urlparse(base_url)
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self._start_frag_download(ctx)
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frags_filenames = []
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frag_index = 0
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while fragments_list:
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seg_i, frag_i = fragments_list.pop(0)
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frag_index += 1
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if frag_index <= ctx['frag_index']:
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continue
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name = 'Seg%d-Frag%d' % (seg_i, frag_i)
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query = []
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if base_url_parsed.query:
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@ -386,17 +387,10 @@ class F4mFD(FragmentFD):
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if info_dict.get('extra_param_to_segment_url'):
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query.append(info_dict['extra_param_to_segment_url'])
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url_parsed = base_url_parsed._replace(path=base_url_parsed.path + name, query='&'.join(query))
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frag_filename = '%s-%s' % (ctx['tmpfilename'], name)
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try:
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success = ctx['dl'].download(frag_filename, {
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'url': url_parsed.geturl(),
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'http_headers': info_dict.get('http_headers'),
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})
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success, down_data = self._download_fragment(ctx, url_parsed.geturl(), info_dict)
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if not success:
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return False
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(down, frag_sanitized) = sanitize_open(frag_filename, 'rb')
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down_data = down.read()
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down.close()
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reader = FlvReader(down_data)
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while True:
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try:
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@ -411,12 +405,8 @@ class F4mFD(FragmentFD):
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break
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raise
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if box_type == b'mdat':
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dest_stream.write(box_data)
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self._append_fragment(ctx, box_data)
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break
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if live:
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os.remove(encodeFilename(frag_sanitized))
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else:
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frags_filenames.append(frag_sanitized)
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except (compat_urllib_error.HTTPError, ) as err:
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if live and (err.code == 404 or err.code == 410):
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# We didn't keep up with the live window. Continue
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@ -436,7 +426,4 @@ class F4mFD(FragmentFD):
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self._finish_frag_download(ctx)
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for frag_file in frags_filenames:
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os.remove(encodeFilename(frag_file))
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return True
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@ -2,6 +2,7 @@ from __future__ import division, unicode_literals
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import os
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import time
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import io
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from .common import FileDownloader
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from .http import HttpFD
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@ -10,6 +11,7 @@ from ..utils import (
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encodeFilename,
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sanitize_open,
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sanitized_Request,
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compat_str,
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)
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@ -30,13 +32,13 @@ class FragmentFD(FileDownloader):
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Skip unavailable fragments (DASH and hlsnative only)
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"""
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def report_retry_fragment(self, err, fragment_name, count, retries):
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def report_retry_fragment(self, err, frag_index, count, retries):
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self.to_screen(
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'[download] Got server HTTP error: %s. Retrying fragment %s (attempt %d of %s)...'
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% (error_to_compat_str(err), fragment_name, count, self.format_retries(retries)))
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'[download] Got server HTTP error: %s. Retrying fragment %d (attempt %d of %s)...'
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% (error_to_compat_str(err), frag_index, count, self.format_retries(retries)))
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def report_skip_fragment(self, fragment_name):
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self.to_screen('[download] Skipping fragment %s...' % fragment_name)
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def report_skip_fragment(self, frag_index):
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self.to_screen('[download] Skipping fragment %d...' % frag_index)
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def _prepare_url(self, info_dict, url):
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headers = info_dict.get('http_headers')
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@ -46,6 +48,25 @@ class FragmentFD(FileDownloader):
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self._prepare_frag_download(ctx)
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self._start_frag_download(ctx)
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def _download_fragment(self, ctx, frag_url, info_dict, headers=None):
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down = io.BytesIO()
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success = ctx['dl'].download(down, {
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'url': frag_url,
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'http_headers': headers or info_dict.get('http_headers'),
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})
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if not success:
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return False, None
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frag_content = down.getvalue()
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down.close()
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return True, frag_content
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def _append_fragment(self, ctx, frag_content):
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ctx['dest_stream'].write(frag_content)
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if not (ctx.get('live') or ctx['tmpfilename'] == '-'):
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frag_index_stream, _ = sanitize_open(ctx['tmpfilename'] + '.fragindex', 'w')
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frag_index_stream.write(compat_str(ctx['frag_index']))
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frag_index_stream.close()
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def _prepare_frag_download(self, ctx):
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if 'live' not in ctx:
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ctx['live'] = False
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@ -66,11 +87,26 @@ class FragmentFD(FileDownloader):
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}
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)
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tmpfilename = self.temp_name(ctx['filename'])
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dest_stream, tmpfilename = sanitize_open(tmpfilename, 'wb')
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open_mode = 'wb'
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resume_len = 0
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frag_index = 0
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# Establish possible resume length
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if os.path.isfile(encodeFilename(tmpfilename)):
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open_mode = 'ab'
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resume_len = os.path.getsize(encodeFilename(tmpfilename))
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if os.path.isfile(encodeFilename(tmpfilename + '.fragindex')):
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frag_index_stream, _ = sanitize_open(tmpfilename + '.fragindex', 'r')
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frag_index = int(frag_index_stream.read())
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frag_index_stream.close()
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dest_stream, tmpfilename = sanitize_open(tmpfilename, open_mode)
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ctx.update({
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'dl': dl,
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'dest_stream': dest_stream,
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'tmpfilename': tmpfilename,
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'frag_index': frag_index,
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# Total complete fragments downloaded so far in bytes
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'complete_frags_downloaded_bytes': resume_len,
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})
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def _start_frag_download(self, ctx):
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@ -79,8 +115,8 @@ class FragmentFD(FileDownloader):
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# hook
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state = {
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'status': 'downloading',
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'downloaded_bytes': 0,
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'frag_index': 0,
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'downloaded_bytes': ctx['complete_frags_downloaded_bytes'],
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'frag_index': ctx['frag_index'],
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'frag_count': total_frags,
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'filename': ctx['filename'],
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'tmpfilename': ctx['tmpfilename'],
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@ -89,8 +125,6 @@ class FragmentFD(FileDownloader):
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start = time.time()
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ctx.update({
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'started': start,
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# Total complete fragments downloaded so far in bytes
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'complete_frags_downloaded_bytes': 0,
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# Amount of fragment's bytes downloaded by the time of the previous
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# frag progress hook invocation
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'prev_frag_downloaded_bytes': 0,
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@ -111,6 +145,7 @@ class FragmentFD(FileDownloader):
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if s['status'] == 'finished':
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state['frag_index'] += 1
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ctx['frag_index'] = state['frag_index']
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state['downloaded_bytes'] += frag_total_bytes - ctx['prev_frag_downloaded_bytes']
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ctx['complete_frags_downloaded_bytes'] = state['downloaded_bytes']
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ctx['prev_frag_downloaded_bytes'] = 0
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@ -132,6 +167,8 @@ class FragmentFD(FileDownloader):
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def _finish_frag_download(self, ctx):
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ctx['dest_stream'].close()
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if os.path.isfile(encodeFilename(ctx['tmpfilename'] + '.fragindex')):
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os.remove(encodeFilename(ctx['tmpfilename'] + '.fragindex'))
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elapsed = time.time() - ctx['started']
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self.try_rename(ctx['tmpfilename'], ctx['filename'])
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fsize = os.path.getsize(encodeFilename(ctx['filename']))
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@ -1,6 +1,5 @@
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from __future__ import unicode_literals
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import os.path
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import re
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import binascii
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try:
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@ -18,8 +17,6 @@ from ..compat import (
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compat_struct_pack,
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)
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from ..utils import (
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encodeFilename,
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sanitize_open,
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parse_m3u8_attributes,
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update_url_query,
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)
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@ -103,17 +100,18 @@ class HlsFD(FragmentFD):
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media_sequence = 0
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decrypt_info = {'METHOD': 'NONE'}
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byte_range = {}
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frags_filenames = []
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frag_index = 0
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for line in s.splitlines():
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line = line.strip()
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if line:
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if not line.startswith('#'):
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frag_index += 1
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if frag_index <= ctx['frag_index']:
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continue
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frag_url = (
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line
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if re.match(r'^https?://', line)
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else compat_urlparse.urljoin(man_url, line))
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frag_name = 'Frag%d' % i
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frag_filename = '%s-%s' % (ctx['tmpfilename'], frag_name)
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if extra_query:
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frag_url = update_url_query(frag_url, extra_query)
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count = 0
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@ -122,15 +120,10 @@ class HlsFD(FragmentFD):
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headers['Range'] = 'bytes=%d-%d' % (byte_range['start'], byte_range['end'])
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while count <= fragment_retries:
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try:
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success = ctx['dl'].download(frag_filename, {
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'url': frag_url,
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'http_headers': headers,
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})
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success, frag_content = self._download_fragment(
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ctx, frag_url, info_dict, headers)
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if not success:
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return False
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down, frag_sanitized = sanitize_open(frag_filename, 'rb')
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frag_content = down.read()
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down.close()
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break
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except compat_urllib_error.HTTPError as err:
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# Unavailable (possibly temporary) fragments may be served.
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@ -139,28 +132,29 @@ class HlsFD(FragmentFD):
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# https://github.com/rg3/youtube-dl/issues/10448).
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count += 1
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if count <= fragment_retries:
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self.report_retry_fragment(err, frag_name, count, fragment_retries)
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self.report_retry_fragment(err, frag_index, count, fragment_retries)
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if count > fragment_retries:
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if skip_unavailable_fragments:
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i += 1
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media_sequence += 1
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self.report_skip_fragment(frag_name)
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self.report_skip_fragment(frag_index)
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continue
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self.report_error(
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'giving up after %s fragment retries' % fragment_retries)
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return False
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if decrypt_info['METHOD'] == 'AES-128':
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iv = decrypt_info.get('IV') or compat_struct_pack('>8xq', media_sequence)
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decrypt_info['KEY'] = decrypt_info.get('KEY') or self.ydl.urlopen(decrypt_info['URI']).read()
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frag_content = AES.new(
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decrypt_info['KEY'], AES.MODE_CBC, iv).decrypt(frag_content)
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ctx['dest_stream'].write(frag_content)
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frags_filenames.append(frag_sanitized)
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self._append_fragment(ctx, frag_content)
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# We only download the first fragment during the test
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if test:
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break
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i += 1
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media_sequence += 1
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elif line.startswith('#EXT-X-KEY'):
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decrypt_url = decrypt_info.get('URI')
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decrypt_info = parse_m3u8_attributes(line[11:])
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if decrypt_info['METHOD'] == 'AES-128':
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if 'IV' in decrypt_info:
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@ -170,7 +164,8 @@ class HlsFD(FragmentFD):
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man_url, decrypt_info['URI'])
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if extra_query:
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decrypt_info['URI'] = update_url_query(decrypt_info['URI'], extra_query)
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decrypt_info['KEY'] = self.ydl.urlopen(decrypt_info['URI']).read()
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if decrypt_url != decrypt_info['URI']:
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decrypt_info['KEY'] = None
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elif line.startswith('#EXT-X-MEDIA-SEQUENCE'):
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media_sequence = int(line[22:])
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elif line.startswith('#EXT-X-BYTERANGE'):
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@ -183,7 +178,4 @@ class HlsFD(FragmentFD):
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self._finish_frag_download(ctx)
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for frag_file in frags_filenames:
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os.remove(encodeFilename(frag_file))
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return True
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@ -20,10 +20,14 @@ from ..utils import (
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class HttpFD(FileDownloader):
|
||||
def real_download(self, filename, info_dict):
|
||||
def real_download(self, filename_or_stream, info_dict):
|
||||
url = info_dict['url']
|
||||
tmpfilename = self.temp_name(filename)
|
||||
filename = filename_or_stream
|
||||
stream = None
|
||||
if hasattr(filename_or_stream, 'write'):
|
||||
stream = filename_or_stream
|
||||
filename = '-'
|
||||
tmpfilename = self.temp_name(filename)
|
||||
|
||||
# Do not include the Accept-Encoding header
|
||||
headers = {'Youtubedl-no-compression': 'True'}
|
||||
|
|
|
@ -1,6 +1,5 @@
|
|||
from __future__ import unicode_literals
|
||||
|
||||
import os
|
||||
import time
|
||||
import struct
|
||||
import binascii
|
||||
|
@ -8,10 +7,6 @@ import io
|
|||
|
||||
from .fragment import FragmentFD
|
||||
from ..compat import compat_urllib_error
|
||||
from ..utils import (
|
||||
sanitize_open,
|
||||
encodeFilename,
|
||||
)
|
||||
|
||||
|
||||
u8 = struct.Struct(b'>B')
|
||||
|
@ -225,16 +220,15 @@ class IsmFD(FragmentFD):
|
|||
|
||||
self._prepare_and_start_frag_download(ctx)
|
||||
|
||||
segments_filenames = []
|
||||
|
||||
fragment_retries = self.params.get('fragment_retries', 0)
|
||||
skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
|
||||
|
||||
track_written = False
|
||||
frag_index = 0
|
||||
for i, segment in enumerate(segments):
|
||||
segment_url = segment['url']
|
||||
segment_name = 'Frag%d' % i
|
||||
target_filename = '%s-%s' % (ctx['tmpfilename'], segment_name)
|
||||
frag_index += 1
|
||||
if frag_index <= ctx['frag_index']:
|
||||
continue
|
||||
count = 0
|
||||
while count <= fragment_retries:
|
||||
try:
|
||||
|
@ -242,33 +236,27 @@ class IsmFD(FragmentFD):
|
|||
'url': segment_url,
|
||||
'http_headers': info_dict.get('http_headers'),
|
||||
})
|
||||
success, frag_content = self._download_fragment(ctx, segment['url'], info_dict)
|
||||
if not success:
|
||||
return False
|
||||
down, target_sanitized = sanitize_open(target_filename, 'rb')
|
||||
down_data = down.read()
|
||||
if not track_written:
|
||||
tfhd_data = extract_box_data(down_data, [b'moof', b'traf', b'tfhd'])
|
||||
tfhd_data = extract_box_data(frag_content, [b'moof', b'traf', b'tfhd'])
|
||||
info_dict['_download_params']['track_id'] = u32.unpack(tfhd_data[4:8])[0]
|
||||
write_piff_header(ctx['dest_stream'], info_dict['_download_params'])
|
||||
track_written = True
|
||||
ctx['dest_stream'].write(down_data)
|
||||
down.close()
|
||||
segments_filenames.append(target_sanitized)
|
||||
self._append_fragment(ctx, frag_content)
|
||||
break
|
||||
except compat_urllib_error.HTTPError as err:
|
||||
count += 1
|
||||
if count <= fragment_retries:
|
||||
self.report_retry_fragment(err, segment_name, count, fragment_retries)
|
||||
self.report_retry_fragment(err, frag_index, count, fragment_retries)
|
||||
if count > fragment_retries:
|
||||
if skip_unavailable_fragments:
|
||||
self.report_skip_fragment(segment_name)
|
||||
self.report_skip_fragment(frag_index)
|
||||
continue
|
||||
self.report_error('giving up after %s fragment retries' % fragment_retries)
|
||||
return False
|
||||
|
||||
self._finish_frag_download(ctx)
|
||||
|
||||
for segment_file in segments_filenames:
|
||||
os.remove(encodeFilename(segment_file))
|
||||
|
||||
return True
|
||||
|
|
Loading…
Reference in a new issue