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Merge remote-tracking branch 'jaimeMF/f4m'
Merge remote-tracking branch 'jaimeMF/f4m'
Conflicts: youtube_dl/extractor/__init__.pymaster
Philipp Hagemeister
11 years ago
5 changed files with 381 additions and 24 deletions
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3youtube_dl/downloader/__init__.py
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305youtube_dl/downloader/f4m.py
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1youtube_dl/extractor/__init__.py
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30youtube_dl/extractor/syfy.py
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66youtube_dl/extractor/theplatform.py
@ -0,0 +1,305 @@ |
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from __future__ import unicode_literals |
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|
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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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from struct import unpack, pack |
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import time |
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import xml.etree.ElementTree as etree |
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|
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from .common import FileDownloader |
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from .http import HttpFD |
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from ..utils import ( |
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compat_urllib_request, |
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compat_urlparse, |
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format_bytes, |
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encodeFilename, |
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sanitize_open, |
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) |
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|
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|
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class FlvReader(io.BytesIO): |
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""" |
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Reader for Flv files |
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The file format is documented in https://www.adobe.com/devnet/f4v.html |
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""" |
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|
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# Utility functions for reading numbers and strings |
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def read_unsigned_long_long(self): |
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return unpack('!Q', self.read(8))[0] |
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|
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def read_unsigned_int(self): |
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return unpack('!I', self.read(4))[0] |
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|
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def read_unsigned_char(self): |
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return unpack('!B', self.read(1))[0] |
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|
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def read_string(self): |
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res = b'' |
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while True: |
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char = self.read(1) |
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if char == b'\x00': |
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break |
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res += char |
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return res |
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|
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def read_box_info(self): |
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""" |
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Read a box and return the info as a tuple: (box_size, box_type, box_data) |
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""" |
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real_size = size = self.read_unsigned_int() |
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box_type = self.read(4) |
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header_end = 8 |
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if size == 1: |
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real_size = self.read_unsigned_long_long() |
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header_end = 16 |
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return real_size, box_type, self.read(real_size-header_end) |
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|
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def read_asrt(self): |
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# version |
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self.read_unsigned_char() |
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# flags |
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self.read(3) |
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quality_entry_count = self.read_unsigned_char() |
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# QualityEntryCount |
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for i in range(quality_entry_count): |
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self.read_string() |
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|
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segment_run_count = self.read_unsigned_int() |
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segments = [] |
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for i in range(segment_run_count): |
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first_segment = self.read_unsigned_int() |
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fragments_per_segment = self.read_unsigned_int() |
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segments.append((first_segment, fragments_per_segment)) |
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|
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return { |
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'segment_run': segments, |
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} |
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|
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def read_afrt(self): |
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# version |
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self.read_unsigned_char() |
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# flags |
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self.read(3) |
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# time scale |
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self.read_unsigned_int() |
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|
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quality_entry_count = self.read_unsigned_char() |
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# QualitySegmentUrlModifiers |
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for i in range(quality_entry_count): |
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self.read_string() |
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|
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fragments_count = self.read_unsigned_int() |
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fragments = [] |
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for i in range(fragments_count): |
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first = self.read_unsigned_int() |
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first_ts = self.read_unsigned_long_long() |
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duration = self.read_unsigned_int() |
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if duration == 0: |
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discontinuity_indicator = self.read_unsigned_char() |
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else: |
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discontinuity_indicator = None |
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fragments.append({ |
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'first': first, |
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'ts': first_ts, |
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'duration': duration, |
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'discontinuity_indicator': discontinuity_indicator, |
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}) |
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|
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return { |
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'fragments': fragments, |
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} |
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|
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def read_abst(self): |
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# version |
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self.read_unsigned_char() |
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# flags |
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self.read(3) |
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# BootstrapinfoVersion |
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bootstrap_info_version = self.read_unsigned_int() |
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# Profile,Live,Update,Reserved |
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self.read(1) |
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# time scale |
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self.read_unsigned_int() |
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# CurrentMediaTime |
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self.read_unsigned_long_long() |
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# SmpteTimeCodeOffset |
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self.read_unsigned_long_long() |
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# MovieIdentifier |
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movie_identifier = self.read_string() |
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server_count = self.read_unsigned_char() |
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# ServerEntryTable |
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for i in range(server_count): |
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self.read_string() |
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quality_count = self.read_unsigned_char() |
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# QualityEntryTable |
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for i in range(server_count): |
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self.read_string() |
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# DrmData |
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self.read_string() |
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# MetaData |
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self.read_string() |
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|
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segments_count = self.read_unsigned_char() |
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segments = [] |
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for i in range(segments_count): |
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box_size, box_type, box_data = self.read_box_info() |
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assert box_type == b'asrt' |
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segment = FlvReader(box_data).read_asrt() |
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segments.append(segment) |
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fragments_run_count = self.read_unsigned_char() |
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fragments = [] |
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for i in range(fragments_run_count): |
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box_size, box_type, box_data = self.read_box_info() |
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assert box_type == b'afrt' |
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fragments.append(FlvReader(box_data).read_afrt()) |
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|
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return { |
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'segments': segments, |
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'fragments': fragments, |
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} |
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|
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def read_bootstrap_info(self): |
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total_size, box_type, box_data = self.read_box_info() |
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assert box_type == b'abst' |
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return FlvReader(box_data).read_abst() |
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|
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|
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def read_bootstrap_info(bootstrap_bytes): |
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return FlvReader(bootstrap_bytes).read_bootstrap_info() |
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|
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|
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def build_fragments_list(boot_info): |
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""" Return a list of (segment, fragment) for each fragment in the video """ |
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res = [] |
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segment_run_table = boot_info['segments'][0] |
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# I've only found videos with one segment |
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segment_run_entry = segment_run_table['segment_run'][0] |
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n_frags = segment_run_entry[1] |
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fragment_run_entry_table = boot_info['fragments'][0]['fragments'] |
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first_frag_number = fragment_run_entry_table[0]['first'] |
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for (i, frag_number) in zip(range(1, n_frags+1), itertools.count(first_frag_number)): |
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res.append((1, frag_number)) |
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return res |
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|
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|
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def write_flv_header(stream, metadata): |
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"""Writes the FLV header and the metadata to stream""" |
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# FLV header |
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stream.write(b'FLV\x01') |
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stream.write(b'\x05') |
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stream.write(b'\x00\x00\x00\x09') |
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# FLV File body |
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stream.write(b'\x00\x00\x00\x00') |
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# FLVTAG |
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# Script data |
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stream.write(b'\x12') |
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# Size of the metadata with 3 bytes |
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stream.write(pack('!L', len(metadata))[1:]) |
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stream.write(b'\x00\x00\x00\x00\x00\x00\x00') |
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stream.write(metadata) |
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# Magic numbers extracted from the output files produced by AdobeHDS.php |
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#(https://github.com/K-S-V/Scripts) |
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stream.write(b'\x00\x00\x01\x73') |
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|
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|
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def _add_ns(prop): |
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return '{http://ns.adobe.com/f4m/1.0}%s' % prop |
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|
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|
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class HttpQuietDownloader(HttpFD): |
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def to_screen(self, *args, **kargs): |
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pass |
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class F4mFD(FileDownloader): |
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""" |
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A downloader for f4m manifests or AdobeHDS. |
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""" |
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|
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def real_download(self, filename, info_dict): |
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man_url = info_dict['url'] |
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self.to_screen('[download] Downloading f4m manifest') |
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manifest = self.ydl.urlopen(man_url).read() |
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self.report_destination(filename) |
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http_dl = HttpQuietDownloader(self.ydl, {'continuedl': True, 'quiet': True, 'noprogress': True}) |
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doc = etree.fromstring(manifest) |
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formats = [(int(f.attrib.get('bitrate', -1)), f) for f in doc.findall(_add_ns('media'))] |
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formats = sorted(formats, key=lambda f: f[0]) |
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rate, media = formats[-1] |
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base_url = compat_urlparse.urljoin(man_url, media.attrib['url']) |
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bootstrap = base64.b64decode(doc.find(_add_ns('bootstrapInfo')).text) |
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metadata = base64.b64decode(media.find(_add_ns('metadata')).text) |
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boot_info = read_bootstrap_info(bootstrap) |
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fragments_list = build_fragments_list(boot_info) |
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total_frags = len(fragments_list) |
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|
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tmpfilename = self.temp_name(filename) |
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(dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb') |
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write_flv_header(dest_stream, metadata) |
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|
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# This dict stores the download progress, it's updated by the progress |
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# hook |
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state = { |
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'downloaded_bytes': 0, |
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'frag_counter': 0, |
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} |
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start = time.time() |
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|
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def frag_progress_hook(status): |
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frag_total_bytes = status.get('total_bytes', 0) |
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estimated_size = (state['downloaded_bytes'] + |
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(total_frags - state['frag_counter']) * frag_total_bytes) |
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if status['status'] == 'finished': |
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state['downloaded_bytes'] += frag_total_bytes |
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state['frag_counter'] += 1 |
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progress = self.calc_percent(state['frag_counter'], total_frags) |
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byte_counter = state['downloaded_bytes'] |
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else: |
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frag_downloaded_bytes = status['downloaded_bytes'] |
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byte_counter = state['downloaded_bytes'] + frag_downloaded_bytes |
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frag_progress = self.calc_percent(frag_downloaded_bytes, |
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frag_total_bytes) |
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progress = self.calc_percent(state['frag_counter'], total_frags) |
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progress += frag_progress / float(total_frags) |
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|
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eta = self.calc_eta(start, time.time(), estimated_size, byte_counter) |
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self.report_progress(progress, format_bytes(estimated_size), |
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status.get('speed'), eta) |
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http_dl.add_progress_hook(frag_progress_hook) |
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|
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frags_filenames = [] |
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for (seg_i, frag_i) in fragments_list: |
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name = 'Seg%d-Frag%d' % (seg_i, frag_i) |
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url = base_url + name |
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frag_filename = '%s-%s' % (tmpfilename, name) |
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success = http_dl.download(frag_filename, {'url': url}) |
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if not success: |
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return False |
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with open(frag_filename, 'rb') as down: |
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down_data = down.read() |
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reader = FlvReader(down_data) |
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while True: |
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_, box_type, box_data = reader.read_box_info() |
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if box_type == b'mdat': |
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dest_stream.write(box_data) |
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break |
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frags_filenames.append(frag_filename) |
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|
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self.report_finish(format_bytes(state['downloaded_bytes']), time.time() - start) |
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|
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self.try_rename(tmpfilename, filename) |
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for frag_file in frags_filenames: |
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os.remove(frag_file) |
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|
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fsize = os.path.getsize(encodeFilename(filename)) |
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self._hook_progress({ |
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'downloaded_bytes': fsize, |
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'total_bytes': fsize, |
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'filename': filename, |
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'status': 'finished', |
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}) |
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|
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return True |
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@ -0,0 +1,30 @@ |
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from __future__ import unicode_literals |
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|
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import re |
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|
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from .common import InfoExtractor |
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|
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|
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class SyfyIE(InfoExtractor): |
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_VALID_URL = r'https?://www\.syfy\.com/videos/.+?vid:(?P<id>\d+)' |
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|
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_TEST = { |
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'url': 'http://www.syfy.com/videos/Robot%20Combat%20League/Behind%20the%20Scenes/vid:2631458', |
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'info_dict': { |
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'id': 'NmqMrGnXvmO1', |
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'ext': 'flv', |
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'title': 'George Lucas has Advice for his Daughter', |
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'description': 'Listen to what insights George Lucas give his daughter Amanda.', |
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}, |
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'params': { |
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# f4m download |
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'skip_download': True, |
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}, |
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'add_ie': ['ThePlatform'], |
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} |
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|
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def _real_extract(self, url): |
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mobj = re.match(self._VALID_URL, url) |
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video_id = mobj.group('id') |
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webpage = self._download_webpage(url, video_id) |
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return self.url_result(self._og_search_video_url(webpage)) |
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