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Refactor fragments interface and dash segments downloader

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- Eliminate segment_urls and initialization_url
+ Introduce manifest_url (manifest may contain unfragmented data in this case url will be used for direct media URL and manifest_url for manifest itself correspondingly)
* Rewrite dashsegments downloader to use fragments data
* Improve generic mpd extraction
This commit is contained in:
Sergey M․
2016-09-17 20:35:22 +07:00
parent 21d21b0c72
commit 86f4d14f81
3 changed files with 26 additions and 44 deletions
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31
youtube_dl/extractor/common.py
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@@ -86,9 +86,10 @@ class InfoExtractor(object):
from worst to best quality.
Potential fields:
* url Mandatory. The URL of the video file or URL of
the manifest file in case of fragmented media
(DASH, hls, hds).
* url Mandatory. The URL of the video file
* manifest_url
The URL of the manifest file in case of
fragmented media (DASH, hls, hds)
* ext Will be calculated from URL if missing
* format A human-readable description of the format
("mp4 container with h264/opus").
@@ -1528,9 +1529,10 @@ class InfoExtractor(object):
mpd_base_url = re.match(r'https?://.+/', urlh.geturl()).group()
return self._parse_mpd_formats(
compat_etree_fromstring(mpd.encode('utf-8')), mpd_id, mpd_base_url, formats_dict=formats_dict)
compat_etree_fromstring(mpd.encode('utf-8')), mpd_id, mpd_base_url,
formats_dict=formats_dict, mpd_url=mpd_url)
def _parse_mpd_formats(self, mpd_doc, mpd_id=None, mpd_base_url='', formats_dict={}):
def _parse_mpd_formats(self, mpd_doc, mpd_id=None, mpd_base_url='', formats_dict={}, mpd_url=None):
"""
Parse formats from MPD manifest.
References:
@@ -1654,6 +1656,7 @@ class InfoExtractor(object):
f = {
'format_id': '%s-%s' % (mpd_id, representation_id) if mpd_id else representation_id,
'url': base_url,
'manifest_url': mpd_url,
'ext': mimetype2ext(mime_type),
'width': int_or_none(representation_attrib.get('width')),
'height': int_or_none(representation_attrib.get('height')),
@@ -1682,14 +1685,6 @@ class InfoExtractor(object):
if 'total_number' not in representation_ms_info and 'segment_duration':
segment_duration = float_or_none(representation_ms_info['segment_duration'], representation_ms_info['timescale'])
representation_ms_info['total_number'] = int(math.ceil(float(period_duration) / segment_duration))
representation_ms_info['segment_urls'] = [
media_template % {
'Number': segment_number,
'Bandwidth': representation_attrib.get('bandwidth'),
}
for segment_number in range(
representation_ms_info['start_number'],
representation_ms_info['total_number'] + representation_ms_info['start_number'])]
representation_ms_info['fragments'] = [{
'url': media_template % {
'Number': segment_number,
@@ -1703,7 +1698,6 @@ class InfoExtractor(object):
# $Number*$ or $Time$ in media template with S list available
# Example $Number*$: http://www.svtplay.se/klipp/9023742/stopptid-om-bjorn-borg
# Example $Time$: https://play.arkena.com/embed/avp/v2/player/media/b41dda37-d8e7-4d3f-b1b5-9a9db578bdfe/1/129411
representation_ms_info['segment_urls'] = []
representation_ms_info['fragments'] = []
segment_time = 0
segment_d = None
@@ -1715,7 +1709,6 @@ class InfoExtractor(object):
'Bandwidth': representation_attrib.get('bandwidth'),
'Number': segment_number,
}
representation_ms_info['segment_urls'].append(segment_url)
representation_ms_info['fragments'].append({
'url': segment_url,
'duration': float_or_none(segment_d, representation_ms_info['timescale']),
@@ -1745,17 +1738,15 @@ class InfoExtractor(object):
'duration': float_or_none(s['d'], representation_ms_info['timescale']),
})
representation_ms_info['fragments'] = fragments
if 'segment_urls' in representation_ms_info:
# NB: MPD manifest may contain direct URLs to unfragmented media.
# No fragments key is present in this case.
if 'fragments' in representation_ms_info:
f.update({
'segment_urls': representation_ms_info['segment_urls'],
'fragments': [],
'protocol': 'http_dash_segments',
})
if 'initialization_url' in representation_ms_info:
initialization_url = representation_ms_info['initialization_url'].replace('$RepresentationID$', representation_id)
f.update({
'initialization_url': initialization_url,
})
if not f.get('url'):
f['url'] = initialization_url
f['fragments'].append({'url': initialization_url})